Rsphinx.addnodesdocument)}( rawsourcechildren]( translations LanguagesNode)}(hhh](h pending_xref)}(hhh]docutils.nodesTextChinese (Simplified)}parenthsba attributes}(ids]classes]names]dupnames]backrefs] refdomainstdreftypedoc reftarget%/translations/zh_CN/arch/s390/s390dbfmodnameN classnameN refexplicitutagnamehhh ubh)}(hhh]hChinese (Traditional)}hh2sbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget%/translations/zh_TW/arch/s390/s390dbfmodnameN classnameN refexplicituh1hhh ubh)}(hhh]hItalian}hhFsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget%/translations/it_IT/arch/s390/s390dbfmodnameN classnameN refexplicituh1hhh ubh)}(hhh]hJapanese}hhZsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget%/translations/ja_JP/arch/s390/s390dbfmodnameN classnameN refexplicituh1hhh ubh)}(hhh]hKorean}hhnsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget%/translations/ko_KR/arch/s390/s390dbfmodnameN classnameN refexplicituh1hhh ubh)}(hhh]hSpanish}hhsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget%/translations/sp_SP/arch/s390/s390dbfmodnameN classnameN refexplicituh1hhh ubeh}(h]h ]h"]h$]h&]current_languageEnglishuh1h hh _documenthsourceNlineNubhsection)}(hhh](htitle)}(hS390 Debug Featureh]hS390 Debug Feature}(hhhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhhh?/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf.rsthKubhdefinition_list)}(hhh]hdefinition_list_item)}(hBfiles: - arch/s390/kernel/debug.c - arch/s390/include/asm/debug.h h](hterm)}(hfiles:h]hfiles:}(hhhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhhubh definition)}(hhh]h bullet_list)}(hhh](h list_item)}(harch/s390/kernel/debug.ch]h paragraph)}(hhh]harch/s390/kernel/debug.c}(hhhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhhubah}(h]h ]h"]h$]h&]uh1hhhubh)}(harch/s390/include/asm/debug.h h]h)}(harch/s390/include/asm/debug.hh]harch/s390/include/asm/debug.h}(hhhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhhubah}(h]h ]h"]h$]h&]uh1hhhubeh}(h]h ]h"]h$]h&]bullet-uh1hhhhKhhubah}(h]h ]h"]h$]h&]uh1hhhubeh}(h]h ]h"]h$]h&]uh1hhhhKhhubah}(h]h ]h"]h$]h&]uh1hhhhhhNhNubh)}(hhh](h)}(h Description:h]h Description:}(hj,hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj)hhhhhK ubh)}(hXCThe goal of this feature is to provide a kernel debug logging API where log records can be stored efficiently in memory, where each component (e.g. device drivers) can have one separate debug log. One purpose of this is to inspect the debug logs after a production system crash in order to analyze the reason for the crash.h]hXCThe goal of this feature is to provide a kernel debug logging API where log records can be stored efficiently in memory, where each component (e.g. device drivers) can have one separate debug log. One purpose of this is to inspect the debug logs after a production system crash in order to analyze the reason for the crash.}(hj:hhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK hj)hhubh)}(hIf the system still runs but only a subcomponent which uses dbf fails, it is possible to look at the debug logs on a live system via the Linux debugfs filesystem.h]hIf the system still runs but only a subcomponent which uses dbf fails, it is possible to look at the debug logs on a live system via the Linux debugfs filesystem.}(hjHhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhj)hhubh)}(hIThe debug feature may also very useful for kernel and driver development.h]hIThe debug feature may also very useful for kernel and driver development.}(hjVhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhj)hhubeh}(h] descriptionah ]h"] description:ah$]h&]uh1hhhhhhhhK ubh)}(hhh](h)}(hDesign:h]hDesign:}(hjohhhNhNubah}(h]h ]h"]h$]h&]uh1hhjlhhhhhKubh)}(hXKernel components (e.g. device drivers) can register themselves at the debug feature with the function call :c:func:`debug_register()`. This function initializes a debug log for the caller. For each debug log exists a number of debug areas where exactly one is active at one time. Each debug area consists of contiguous pages in memory. In the debug areas there are stored debug entries (log records) which are written by event- and exception-calls.h](hlKernel components (e.g. device drivers) can register themselves at the debug feature with the function call }(hj}hhhNhNubh)}(h:c:func:`debug_register()`h]hliteral)}(hjh]hdebug_register()}(hjhhhNhNubah}(h]h ](xrefcc-funceh"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]refdocarch/s390/s390dbf refdomainjreftypefunc refexplicitrefwarn reftargetdebug_registeruh1hhhhKhj}ubhX<. This function initializes a debug log for the caller. For each debug log exists a number of debug areas where exactly one is active at one time. Each debug area consists of contiguous pages in memory. In the debug areas there are stored debug entries (log records) which are written by event- and exception-calls.}(hj}hhhNhNubeh}(h]h ]h"]h$]h&]uh1hhhhKhjlhhubh)}(hX An event-call writes the specified debug entry to the active debug area and updates the log pointer for the active area. If the end of the active debug area is reached, a wrap around is done (ring buffer) and the next debug entry will be written at the beginning of the active debug area.h]hX An event-call writes the specified debug entry to the active debug area and updates the log pointer for the active area. If the end of the active debug area is reached, a wrap around is done (ring buffer) and the next debug entry will be written at the beginning of the active debug area.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK!hjlhhubh)}(hXAn exception-call writes the specified debug entry to the log and switches to the next debug area. This is done in order to be sure that the records which describe the origin of the exception are not overwritten when a wrap around for the current area occurs.h]hXAn exception-call writes the specified debug entry to the log and switches to the next debug area. This is done in order to be sure that the records which describe the origin of the exception are not overwritten when a wrap around for the current area occurs.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK'hjlhhubh)}(hThe debug areas themselves are also ordered in form of a ring buffer. When an exception is thrown in the last debug area, the following debug entries are then written again in the very first area.h]hThe debug areas themselves are also ordered in form of a ring buffer. When an exception is thrown in the last debug area, the following debug entries are then written again in the very first area.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK,hjlhhubh)}(hThere are four versions for the event- and exception-calls: One for logging raw data, one for text, one for numbers (unsigned int and long), and one for sprintf-like formatted strings.h]hThere are four versions for the event- and exception-calls: One for logging raw data, one for text, one for numbers (unsigned int and long), and one for sprintf-like formatted strings.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK0hjlhhubh)}(h-Each debug entry contains the following data:h]h-Each debug entry contains the following data:}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK4hjlhhubh)}(hhh](h)}(h Timestamph]h)}(hjh]h Timestamp}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK6hjubah}(h]h ]h"]h$]h&]uh1hhjhhhhhNubh)}(hCpu-Number of calling taskh]h)}(hjh]hCpu-Number of calling task}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK7hjubah}(h]h ]h"]h$]h&]uh1hhjhhhhhNubh)}(hLevel of debug entry (0...6)h]h)}(hj-h]hLevel of debug entry (0...6)}(hj/hhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK8hj+ubah}(h]h ]h"]h$]h&]uh1hhjhhhhhNubh)}(hReturn Address to callerh]h)}(hjDh]hReturn Address to caller}(hjFhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK9hjBubah}(h]h ]h"]h$]h&]uh1hhjhhhhhNubh)}(h&Flag, if entry is an exception or not h]h)}(h%Flag, if entry is an exception or noth]h%Flag, if entry is an exception or not}(hj]hhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK:hjYubah}(h]h ]h"]h$]h&]uh1hhjhhhhhNubeh}(h]h ]h"]h$]h&]jjuh1hhhhK6hjlhhubh)}(hX|The debug logs can be inspected in a live system through entries in the debugfs-filesystem. Under the toplevel directory "``s390dbf``" there is a directory for each registered component, which is named like the corresponding component. The debugfs normally should be mounted to ``/sys/kernel/debug`` therefore the debug feature can be accessed under ``/sys/kernel/debug/s390dbf``.h](h|The debug logs can be inspected in a live system through entries in the debugfs-filesystem. Under the toplevel directory “}(hjwhhhNhNubj)}(h ``s390dbf``h]hs390dbf}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjwubh” there is a directory for each registered component, which is named like the corresponding component. The debugfs normally should be mounted to }(hjwhhhNhNubj)}(h``/sys/kernel/debug``h]h/sys/kernel/debug}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjwubh3 therefore the debug feature can be accessed under }(hjwhhhNhNubj)}(h``/sys/kernel/debug/s390dbf``h]h/sys/kernel/debug/s390dbf}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjwubh.}(hjwhhhNhNubeh}(h]h ]h"]h$]h&]uh1hhhhK echo "-" > /sys/kernel/debug/s390dbf/dasd/levelh]h1> echo "-" > /sys/kernel/debug/s390dbf/dasd/level}hjQsbah}(h]h ]h"]h$]h&] xml:spacepreserveuh1jOhhhKWhjlhhubh)}(hIt is also possible to deactivate the debug feature globally for every debug log. You can change the behavior using 2 sysctl parameters in ``/proc/sys/s390dbf``:h](hIt is also possible to deactivate the debug feature globally for every debug log. You can change the behavior using 2 sysctl parameters in }(hjahhhNhNubj)}(h``/proc/sys/s390dbf``h]h/proc/sys/s390dbf}(hjihhhNhNubah}(h]h ]h"]h$]h&]uh1jhjaubh:}(hjahhhNhNubeh}(h]h ]h"]h$]h&]uh1hhhhKYhjlhhubh)}(hThere are currently 2 possible triggers, which stop the debug feature globally. The first possibility is to use the ``debug_active`` sysctl. If set to 1 the debug feature is running. If ``debug_active`` is set to 0 the debug feature is turned off.h](htThere are currently 2 possible triggers, which stop the debug feature globally. The first possibility is to use the }(hjhhhNhNubj)}(h``debug_active``h]h debug_active}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubh6 sysctl. If set to 1 the debug feature is running. If }(hjhhhNhNubj)}(h``debug_active``h]h debug_active}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubh- is set to 0 the debug feature is turned off.}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1hhhhK]hjlhhubh)}(hX`The second trigger which stops the debug feature is a kernel oops. That prevents the debug feature from overwriting debug information that happened before the oops. After an oops you can reactivate the debug feature by piping 1 to ``/proc/sys/s390dbf/debug_active``. Nevertheless, it's not suggested to use an oopsed kernel in a production environment.h](hThe second trigger which stops the debug feature is a kernel oops. That prevents the debug feature from overwriting debug information that happened before the oops. After an oops you can reactivate the debug feature by piping 1 to }(hjhhhNhNubj)}(h"``/proc/sys/s390dbf/debug_active``h]h/proc/sys/s390dbf/debug_active}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubhY. Nevertheless, it’s not suggested to use an oopsed kernel in a production environment.}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1hhhhKbhjlhhubh)}(hIf you want to disallow the deactivation of the debug feature, you can use the ``debug_stoppable`` sysctl. If you set ``debug_stoppable`` to 0 the debug feature cannot be stopped. If the debug feature is already stopped, it will stay deactivated.h](hOIf you want to disallow the deactivation of the debug feature, you can use the }(hjhhhNhNubj)}(h``debug_stoppable``h]hdebug_stoppable}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubh sysctl. If you set }(hjhhhNhNubj)}(h``debug_stoppable``h]hdebug_stoppable}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubhm to 0 the debug feature cannot be stopped. If the debug feature is already stopped, it will stay deactivated.}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1hhhhKhhjlhhubeh}(h]designah ]h"]design:ah$]h&]uh1hhhhhhhhKubh)}(hhh](h)}(hKernel Interfaces:h]hKernel Interfaces:}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhj hhhhhKnubhindex)}(hhh]h}(h]h ]h"]h$]h&]entries](singledebug_next_entry (C function)c.debug_next_entryhNtauh1jhj hhhNhNubhdesc)}(hhh](hdesc_signature)}(h3bool debug_next_entry (file_private_info_t *p_info)h]hdesc_signature_line)}(h2bool debug_next_entry(file_private_info_t *p_info)h](hdesc_sig_keyword_type)}(hboolh]hbool}(hjBhhhNhNubah}(h]h ]ktah"]h$]h&]uh1j@hj<hhh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMubhdesc_sig_space)}(h h]h }(hjThhhNhNubah}(h]h ]wah"]h$]h&]uh1jRhj<hhhjQhMubh desc_name)}(hdebug_next_entryh]h desc_sig_name)}(hdebug_next_entryh]hdebug_next_entry}(hjkhhhNhNubah}(h]h ]nah"]h$]h&]uh1jihjeubah}(h]h ](sig-namedescnameeh"]h$]h&]j_j`uh1jchj<hhhjQhMubhdesc_parameterlist)}(h(file_private_info_t *p_info)h]hdesc_parameter)}(hfile_private_info_t *p_infoh](h)}(hhh]jj)}(hfile_private_info_th]hfile_private_info_t}(hjhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjubah}(h]h ]h"]h$]h&] refdomainjreftype identifier reftargetjmodnameN classnameN c:parent_keysphinx.domains.c LookupKey)}data]j ASTIdentifier)}jjmsbc.debug_next_entryasbuh1hhjubjS)}(h h]h }(hjhhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjubhdesc_sig_punctuation)}(h*h]h*}(hjhhhNhNubah}(h]h ]pah"]h$]h&]uh1jhjubjj)}(hp_infoh]hp_info}(hjhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjubah}(h]h ]h"]h$]h&]j_j`uh1jhj<hhhjQhMubeh}(h]h ]h"]h$]h&]j_j` add_permalinkuh1j:sphinx_line_type declaratorhj6hhhjQhMubah}(h]j-ah ](sig sig-objecteh"]h$]h&] is_multiline _toc_parts) _toc_namehuh1j4hjQhMhj1hhubh desc_content)}(hhh]h)}(hGo to the next entryh]hGo to the next entry}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhj hhubah}(h]h ]h"]h$]h&]uh1jhj1hhhjQhMubeh}(h]h ](jfunctioneh"]h$]h&]domainjobjtypej$desctypej$noindex noindexentrynocontentsentryuh1j/hhhj hNhNubh container)}(hXl**Parameters** ``file_private_info_t *p_info`` Private info that is manipulated **Description** Sets the current position in **p_info** to the next entry. If no further entry exists the current position is set to one after the end the return value indicates that no further entries exist. **Return** True if there are more following entries, false otherwiseh](h)}(h**Parameters**h]hstrong)}(hj6h]h Parameters}(hj:hhhNhNubah}(h]h ]h"]h$]h&]uh1j8hj4ubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhj0ubh)}(hhh]h)}(hA``file_private_info_t *p_info`` Private info that is manipulated h](h)}(h``file_private_info_t *p_info``h]j)}(hjWh]hfile_private_info_t *p_info}(hjYhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjUubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjQubh)}(hhh]h)}(h Private info that is manipulatedh]h Private info that is manipulated}(hjphhhNhNubah}(h]h ]h"]h$]h&]uh1hhjlhMhjmubah}(h]h ]h"]h$]h&]uh1hhjQubeh}(h]h ]h"]h$]h&]uh1hhjlhMhjNubah}(h]h ]h"]h$]h&]uh1hhj0ubh)}(h**Description**h]j9)}(hjh]h Description}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhj0ubh)}(hSets the current position in **p_info** to the next entry. If no further entry exists the current position is set to one after the end the return value indicates that no further entries exist.h](hSets the current position in }(hjhhhNhNubj9)}(h **p_info**h]hp_info}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjubh to the next entry. If no further entry exists the current position is set to one after the end the return value indicates that no further entries exist.}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhj0ubh)}(h **Return**h]j9)}(hjh]hReturn}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhj0ubh)}(h9True if there are more following entries, false otherwiseh]h9True if there are more following entries, false otherwise}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhj0ubeh}(h]h ] kernelindentah"]h$]h&]uh1j.hj hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](j+debug_to_act_entry (C function)c.debug_to_act_entryhNtauh1jhj hhhNhNubj0)}(hhh](j5)}(h5void debug_to_act_entry (file_private_info_t *p_info)h]j;)}(h4void debug_to_act_entry(file_private_info_t *p_info)h](jA)}(hvoidh]hvoid}(hjhhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hj hhh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMubjS)}(h h]h }(hjhhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj hhhjhMubjd)}(hdebug_to_act_entryh]jj)}(hdebug_to_act_entryh]hdebug_to_act_entry}(hj1hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj-ubah}(h]h ](j}j~eh"]h$]h&]j_j`uh1jchj hhhjhMubj)}(h(file_private_info_t *p_info)h]j)}(hfile_private_info_t *p_infoh](h)}(hhh]jj)}(hfile_private_info_th]hfile_private_info_t}(hjPhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjMubah}(h]h ]h"]h$]h&] refdomainjreftypej reftargetjRmodnameN classnameNjj)}j]j)}jj3sbc.debug_to_act_entryasbuh1hhjIubjS)}(h h]h }(hjphhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjIubj)}(hjh]h*}(hj~hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjIubjj)}(hp_infoh]hp_info}(hjhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjIubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjEubah}(h]h ]h"]h$]h&]j_j`uh1jhj hhhjhMubeh}(h]h ]h"]h$]h&]j_j`juh1j:jjhjhhhjhMubah}(h]jah ](jjeh"]h$]h&]jj)jhuh1j4hjhMhjhhubj)}(hhh]h)}(h Go to the currently active entryh]h Go to the currently active entry}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjhhubah}(h]h ]h"]h$]h&]uh1jhjhhhjhMubeh}(h]h ](jfunctioneh"]h$]h&]j(jj)jj*jj+j,j-uh1j/hhhj hNhNubj/)}(h**Parameters** ``file_private_info_t *p_info`` Private info that is manipulated **Description** Sets the current position in **p_info** to the currently active entry of **p_info->debug_info_snap**h](h)}(h**Parameters**h]j9)}(hjh]h Parameters}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjubh)}(hhh]h)}(hA``file_private_info_t *p_info`` Private info that is manipulated h](h)}(h``file_private_info_t *p_info``h]j)}(hjh]hfile_private_info_t *p_info}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjubh)}(hhh]h)}(h Private info that is manipulatedh]h Private info that is manipulated}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhj hMhj ubah}(h]h ]h"]h$]h&]uh1hhjubeh}(h]h ]h"]h$]h&]uh1hhj hMhjubah}(h]h ]h"]h$]h&]uh1hhjubh)}(h**Description**h]j9)}(hj1h]h Description}(hj3hhhNhNubah}(h]h ]h"]h$]h&]uh1j8hj/ubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjubh)}(hdSets the current position in **p_info** to the currently active entry of **p_info->debug_info_snap**h](hSets the current position in }(hjGhhhNhNubj9)}(h **p_info**h]hp_info}(hjOhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjGubh" to the currently active entry of }(hjGhhhNhNubj9)}(h**p_info->debug_info_snap**h]hp_info->debug_info_snap}(hjahhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjGubeh}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: 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If no previous entry exists the current position is set left as DEBUG_PROLOG_ENTRY and the return value indicates that no previous entries exist.h](hSets the current position in }(hjhhhNhNubj9)}(h **p_info**h]hp_info}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjubh to the previous entry. If no previous entry exists the current position is set left as DEBUG_PROLOG_ENTRY and the return value indicates that no previous entries exist.}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjVubh)}(h **Return**h]j9)}(hjh]hReturn}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjVubh)}(h8True if there are more previous entries, false otherwiseh]h8True if there are more previous entries, false otherwise}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjVubeh}(h]h ] kernelindentah"]h$]h&]uh1j.hj hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](j+debug_move_entry (C function)c.debug_move_entryhNtauh1jhj hhhNhNubj0)}(hhh](j5)}(hAbool debug_move_entry (file_private_info_t *p_info, bool reverse)h]j;)}(h@bool debug_move_entry(file_private_info_t *p_info, bool reverse)h](jA)}(hjDh]hbool}(hj4 hhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hj0 hhh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMubjS)}(h h]h }(hjB hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj0 hhhjA hMubjd)}(hdebug_move_entryh]jj)}(hdebug_move_entryh]hdebug_move_entry}(hjT hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjP ubah}(h]h ](j}j~eh"]h$]h&]j_j`uh1jchj0 hhhjA hMubj)}(h+(file_private_info_t *p_info, bool reverse)h](j)}(hfile_private_info_t *p_infoh](h)}(hhh]jj)}(hfile_private_info_th]hfile_private_info_t}(hjs hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjp ubah}(h]h ]h"]h$]h&] refdomainjreftypej reftargetju modnameN classnameNjj)}j]j)}jjV sbc.debug_move_entryasbuh1hhjl ubjS)}(h h]h }(hj hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjl ubj)}(hjh]h*}(hj hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjl ubjj)}(hp_infoh]hp_info}(hj hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjl ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjh ubj)}(h bool reverseh](jA)}(hjDh]hbool}(hj hhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hj ubjS)}(h h]h }(hj hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj ubjj)}(hreverseh]hreverse}(hj hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjh ubeh}(h]h ]h"]h$]h&]j_j`uh1jhj0 hhhjA hMubeh}(h]h ]h"]h$]h&]j_j`juh1j:jjhj, hhhjA hMubah}(h]j' ah ](jjeh"]h$]h&]jj)jhuh1j4hjA hMhj) hhubj)}(hhh]h)}(hGet a textual representation of debug info, or as much as fitsh]h>Get a textual representation of debug info, or as much as fits}(hjM hhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjJ hhubah}(h]h ]h"]h$]h&]uh1jhjX hhhj hMubeh}(h]h ](jfunctioneh"]h$]h&]j(jj)je j*je j+j,j-uh1j/hhhj hNhNubj/)}(hX/**Parameters** ``debug_info_t *id`` Debug information to use ``struct debug_view *view`` View with which to dump the debug information ``char *buf`` Buffer the textual debug data representation is written to ``size_t buf_size`` Size of the buffer, including the trailing '\0' byte ``bool reverse`` Go backwards from the last written entry **Description** This function may be used whenever a textual representation of the debug information is required without using an s390dbf file. **Note** It is the callers responsibility to supply a view that is compatible with the debug information data. **Return** On success returns the number of bytes written to the buffer not including the trailing '\0' byte. If bug_size == 0 the function returns 0. On failure an error code less than 0 is returned.h](h)}(h**Parameters**h]j9)}(hjo h]h Parameters}(hjq hhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjm ubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhji ubh)}(hhh](h)}(h.``debug_info_t *id`` Debug information to use h](h)}(h``debug_info_t *id``h]j)}(hj h]hdebug_info_t *id}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj ubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhj ubh)}(hhh]h)}(hDebug information to useh]hDebug information to use}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj hMhj ubah}(h]h ]h"]h$]h&]uh1hhj ubeh}(h]h ]h"]h$]h&]uh1hhj hMhj ubh)}(hJ``struct debug_view *view`` View with which to dump the debug information h](h)}(h``struct debug_view *view``h]j)}(hj h]hstruct debug_view *view}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj ubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhj ubh)}(hhh]h)}(h-View with which to dump the debug informationh]h-View with which to dump the debug information}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj hMhj ubah}(h]h ]h"]h$]h&]uh1hhj ubeh}(h]h ]h"]h$]h&]uh1hhj hMhj ubh)}(hI``char *buf`` Buffer the textual debug data representation is written to h](h)}(h ``char *buf``h]j)}(hjh]h char *buf}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhj ubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhj ubh)}(hhh]h)}(h:Buffer the textual debug data representation is written toh]h:Buffer the textual debug data representation is written to}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhMhjubah}(h]h ]h"]h$]h&]uh1hhj ubeh}(h]h ]h"]h$]h&]uh1hhjhMhj ubh)}(hI``size_t buf_size`` Size of the buffer, including the trailing '\0' byte h](h)}(h``size_t buf_size``h]j)}(hj9h]hsize_t buf_size}(hj;hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj7ubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhj3ubh)}(hhh]h)}(h4Size of the buffer, including the trailing '\0' byteh]h8Size of the buffer, including the trailing ‘0’ byte}(hjRhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjNhMhjOubah}(h]h ]h"]h$]h&]uh1hhj3ubeh}(h]h ]h"]h$]h&]uh1hhjNhMhj ubh)}(h:``bool reverse`` Go backwards from the last written entry h](h)}(h``bool reverse``h]j)}(hjrh]h bool reverse}(hjthhhNhNubah}(h]h ]h"]h$]h&]uh1jhjpubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjlubh)}(hhh]h)}(h(Go backwards from the last written entryh]h(Go backwards from the last written entry}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhMhjubah}(h]h ]h"]h$]h&]uh1hhjlubeh}(h]h ]h"]h$]h&]uh1hhjhMhj ubeh}(h]h ]h"]h$]h&]uh1hhji ubh)}(h**Description**h]j9)}(hjh]h Description}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhji ubh)}(hThis function may be used whenever a textual representation of the debug information is required without using an s390dbf file.h]hThis function may be used whenever a textual representation of the debug information is required without using an s390dbf file.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhji ubh)}(h**Note**h]j9)}(hjh]hNote}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhji ubh)}(heIt is the callers responsibility to supply a view that is compatible with the debug information data.h]heIt is the callers responsibility to supply a view that is compatible with the debug information data.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhji ubh)}(h **Return**h]j9)}(hjh]hReturn}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhji ubh)}(hOn success returns the number of bytes written to the buffer not including the trailing '\0' byte. If bug_size == 0 the function returns 0. On failure an error code less than 0 is returned.h]hOn success returns the number of bytes written to the buffer not including the trailing ‘0’ byte. If bug_size == 0 the function returns 0. On failure an error code less than 0 is returned.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhji ubeh}(h]h ] kernelindentah"]h$]h&]uh1j.hj hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](j+ debug_register_mode (C function)c.debug_register_modehNtauh1jhj hhhNhNubj0)}(hhh](j5)}(hdebug_info_t * debug_register_mode (const char *name, int pages_per_area, int nr_areas, int buf_size, umode_t mode, uid_t uid, gid_t gid)h]j;)}(hdebug_info_t *debug_register_mode(const char *name, int pages_per_area, int nr_areas, int buf_size, umode_t mode, uid_t uid, gid_t gid)h](h)}(hhh]jj)}(h debug_info_th]h debug_info_t}(hjChhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj@ubah}(h]h ]h"]h$]h&] refdomainjreftypej reftargetjEmodnameN classnameNjj)}j]j)}jdebug_register_modesbc.debug_register_modeasbuh1hhj<hhh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chM%ubjS)}(h h]h }(hjehhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj<hhhjdhM%ubj)}(hjh]h*}(hjshhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj<hhhjdhM%ubjd)}(hdebug_register_modeh]jj)}(hjah]hdebug_register_mode}(hjhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjubah}(h]h ](j}j~eh"]h$]h&]j_j`uh1jchj<hhhjdhM%ubj)}(hf(const char *name, int pages_per_area, int nr_areas, int buf_size, umode_t mode, uid_t uid, gid_t gid)h](j)}(hconst char *nameh](j )}(hconsth]hconst}(hjhhhNhNubah}(h]h ]j ah"]h$]h&]uh1j hjubjS)}(h h]h }(hjhhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjubjA)}(hcharh]hchar}(hjhhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hjubjS)}(h h]h }(hjhhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjubj)}(hjh]h*}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubjj)}(hnameh]hname}(hjhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjubj)}(hint pages_per_areah](jA)}(hinth]hint}(hjhhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hjubjS)}(h h]h }(hj hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjubjj)}(hpages_per_areah]hpages_per_area}(hjhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjubj)}(h int nr_areash](jA)}(hinth]hint}(hj2hhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hj.ubjS)}(h h]h }(hj@hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj.ubjj)}(hnr_areash]hnr_areas}(hjNhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj.ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjubj)}(h int buf_sizeh](jA)}(hinth]hint}(hjghhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hjcubjS)}(h h]h }(hjuhhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjcubjj)}(hbuf_sizeh]hbuf_size}(hjhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjcubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjubj)}(h umode_t modeh](h)}(hhh]jj)}(humode_th]humode_t}(hjhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjubah}(h]h ]h"]h$]h&] refdomainjreftypej reftargetjmodnameN classnameNjj)}j]j_c.debug_register_modeasbuh1hhjubjS)}(h h]h }(hjhhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjubjj)}(hmodeh]hmode}(hjhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjubj)}(h uid_t uidh](h)}(hhh]jj)}(huid_th]huid_t}(hjhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjubah}(h]h ]h"]h$]h&] refdomainjreftypej reftargetjmodnameN classnameNjj)}j]j_c.debug_register_modeasbuh1hhjubjS)}(h h]h }(hjhhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjubjj)}(huidh]huid}(hjhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjubj)}(h gid_t gidh](h)}(hhh]jj)}(hgid_th]hgid_t}(hj/hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj,ubah}(h]h ]h"]h$]h&] refdomainjreftypej reftargetj1modnameN classnameNjj)}j]j_c.debug_register_modeasbuh1hhj(ubjS)}(h h]h }(hjMhhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj(ubjj)}(hgidh]hgid}(hj[hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj(ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjubeh}(h]h ]h"]h$]h&]j_j`uh1jhj<hhhjdhM%ubeh}(h]h ]h"]h$]h&]j_j`juh1j:jjhj8hhhjdhM%ubah}(h]j3ah ](jjeh"]h$]h&]jj)jhuh1j4hjdhM%hj5hhubj)}(hhh]h)}(h#creates and initializes debug area.h]h#creates and initializes debug area.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjhhubah}(h]h ]h"]h$]h&]uh1jhj5hhhjdhM%ubeh}(h]h ](jfunctioneh"]h$]h&]j(jj)jj*jj+j,j-uh1j/hhhj hNhNubj/)}(hX**Parameters** ``const char *name`` Name of debug log (e.g. used for debugfs entry) ``int pages_per_area`` Number of pages, which will be allocated per area ``int nr_areas`` Number of debug areas ``int buf_size`` Size of data area in each debug entry ``umode_t mode`` File mode for debugfs files. E.g. S_IRWXUGO ``uid_t uid`` User ID for debugfs files. Currently only 0 is supported. ``gid_t gid`` Group ID for debugfs files. Currently only 0 is supported. **Return** - Handle for generated debug area - ``NULL`` if register failed **Description** Allocates memory for a debug log. Must not be called within an interrupt handler.h](h)}(h**Parameters**h]j9)}(hjh]h Parameters}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjubh)}(hhh](h)}(hE``const char *name`` Name of debug log (e.g. used for debugfs entry) h](h)}(h``const char *name``h]j)}(hjh]hconst char *name}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjubh)}(hhh]h)}(h/Name of debug log (e.g. used for debugfs entry)h]h/Name of debug log (e.g. used for debugfs entry)}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhMhjubah}(h]h ]h"]h$]h&]uh1hhjubeh}(h]h ]h"]h$]h&]uh1hhjhMhjubh)}(hI``int pages_per_area`` Number of pages, which will be allocated per area h](h)}(h``int pages_per_area``h]j)}(hjh]hint pages_per_area}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjubh)}(hhh]h)}(h1Number of pages, which will be allocated per areah]h1Number of pages, which will be allocated per area}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhMhjubah}(h]h ]h"]h$]h&]uh1hhjubeh}(h]h ]h"]h$]h&]uh1hhjhMhjubh)}(h'``int nr_areas`` Number of debug areas h](h)}(h``int nr_areas``h]j)}(hj8h]h int nr_areas}(hj:hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj6ubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhj2ubh)}(hhh]h)}(hNumber of debug areash]hNumber of debug areas}(hjQhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjMhMhjNubah}(h]h ]h"]h$]h&]uh1hhj2ubeh}(h]h ]h"]h$]h&]uh1hhjMhMhjubh)}(h7``int buf_size`` Size of data area in each debug entry h](h)}(h``int buf_size``h]j)}(hjqh]h int buf_size}(hjshhhNhNubah}(h]h ]h"]h$]h&]uh1jhjoubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjkubh)}(hhh]h)}(h%Size of data area in each debug entryh]h%Size of data area in each debug entry}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhMhjubah}(h]h ]h"]h$]h&]uh1hhjkubeh}(h]h ]h"]h$]h&]uh1hhjhMhjubh)}(h=``umode_t mode`` File mode for debugfs files. E.g. S_IRWXUGO h](h)}(h``umode_t mode``h]j)}(hjh]h umode_t mode}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjubh)}(hhh]h)}(h+File mode for debugfs files. E.g. S_IRWXUGOh]h+File mode for debugfs files. E.g. S_IRWXUGO}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhMhjubah}(h]h ]h"]h$]h&]uh1hhjubeh}(h]h ]h"]h$]h&]uh1hhjhMhjubh)}(hH``uid_t uid`` User ID for debugfs files. Currently only 0 is supported. h](h)}(h ``uid_t uid``h]j)}(hjh]h uid_t uid}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjubh)}(hhh]h)}(h9User ID for debugfs files. Currently only 0 is supported.h]h9User ID for debugfs files. Currently only 0 is supported.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhMhjubah}(h]h ]h"]h$]h&]uh1hhjubeh}(h]h ]h"]h$]h&]uh1hhjhMhjubh)}(hI``gid_t gid`` Group ID for debugfs files. Currently only 0 is supported. h](h)}(h ``gid_t gid``h]j)}(hjh]h gid_t gid}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjubh)}(hhh]h)}(h:Group ID for debugfs files. Currently only 0 is supported.h]h:Group ID for debugfs files. Currently only 0 is supported.}(hj5hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj1hMhj2ubah}(h]h ]h"]h$]h&]uh1hhjubeh}(h]h ]h"]h$]h&]uh1hhj1hMhjubeh}(h]h ]h"]h$]h&]uh1hhjubh)}(h **Return**h]j9)}(hjWh]hReturn}(hjYhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjUubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjubh)}(hhh](h)}(hHandle for generated debug areah]h)}(hjrh]hHandle for generated debug area}(hjthhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjpubah}(h]h ]h"]h$]h&]uh1hhjmubh)}(h``NULL`` if register failed h]h)}(h``NULL`` if register failedh](j)}(h``NULL``h]hNULL}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubh if register failed}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjubah}(h]h ]h"]h$]h&]uh1hhjmubeh}(h]h ]h"]h$]h&]jjuh1hhjhMhjubh)}(h**Description**h]j9)}(hjh]h Description}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.c hM!hjubh)}(hQAllocates memory for a debug log. Must not be called within an interrupt handler.h]hQAllocates memory for a debug log. 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Must not be called within an interrupt handler.h](h)}(h**Parameters**h]j9)}(hjh]h Parameters}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMChjubh)}(hhh](h)}(hE``const char *name`` Name of debug log (e.g. used for debugfs entry) h](h)}(h``const char *name``h]j)}(hjh]hconst char *name}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMAhjubh)}(hhh]h)}(h/Name of debug log (e.g. used for debugfs entry)h]h/Name of debug log (e.g. used for debugfs entry)}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhMAhjubah}(h]h ]h"]h$]h&]uh1hhjubeh}(h]h ]h"]h$]h&]uh1hhjhMAhjubh)}(hI``int pages_per_area`` Number of pages, which will be allocated per area h](h)}(h``int pages_per_area``h]j)}(hjh]hint pages_per_area}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMBhjubh)}(hhh]h)}(h1Number of pages, which will be allocated per areah]h1Number of pages, which will be allocated per area}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhMBhjubah}(h]h ]h"]h$]h&]uh1hhjubeh}(h]h ]h"]h$]h&]uh1hhjhMBhjubh)}(h'``int nr_areas`` Number of debug areas h](h)}(h``int nr_areas``h]j)}(hjh]h int nr_areas}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMChjubh)}(hhh]h)}(hNumber of debug areash]hNumber of debug areas}(hj4hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj0hMChj1ubah}(h]h ]h"]h$]h&]uh1hhjubeh}(h]h ]h"]h$]h&]uh1hhj0hMChjubh)}(h7``int buf_size`` Size of data area in each debug entry h](h)}(h``int buf_size``h]j)}(hjTh]h int buf_size}(hjVhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjRubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMDhjNubh)}(hhh]h)}(h%Size of data area in each debug entryh]h%Size of data area in each debug entry}(hjmhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjihMDhjjubah}(h]h ]h"]h$]h&]uh1hhjNubeh}(h]h ]h"]h$]h&]uh1hhjihMDhjubeh}(h]h ]h"]h$]h&]uh1hhjubh)}(h **Return**h]j9)}(hjh]hReturn}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMFhjubh)}(hhh](h)}(hHandle for generated debug areah]h)}(hjh]hHandle for generated debug area}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMFhjubah}(h]h ]h"]h$]h&]uh1hhjubh)}(h``NULL`` if register failed h]h)}(h``NULL`` if register failedh](j)}(h``NULL``h]hNULL}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubh if register failed}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMGhjubah}(h]h ]h"]h$]h&]uh1hhjubeh}(h]h ]h"]h$]h&]jjuh1hhjhMFhjubh)}(h**Description**h]j9)}(hjh]h Description}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMIhjubh)}(hAllocates memory for a debug log. 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*idh](h)}(hhh]jj)}(h debug_info_th]h debug_info_t}(hjthhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjqubah}(h]h ]h"]h$]h&] refdomainjreftypej reftargetjvmodnameN classnameNjj)}j]j)}jjWsbc.debug_register_staticasbuh1hhjmubjS)}(h h]h }(hjhhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjmubj)}(hjh]h*}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjmubjj)}(hidh]hid}(hjhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjmubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjiubj)}(hint pages_per_areah](jA)}(hinth]hint}(hjhhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hjubjS)}(h h]h }(hjhhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjubjj)}(hpages_per_areah]hpages_per_area}(hjhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjiubj)}(h int nr_areash](jA)}(hinth]hint}(hjhhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hjubjS)}(h h]h }(hj hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjubjj)}(hnr_areash]hnr_areas}(hjhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjiubeh}(h]h ]h"]h$]h&]j_j`uh1jhj0hhhjBhMbubeh}(h]h ]h"]h$]h&]j_j`juh1j:jjhj,hhhjBhMbubah}(h]j'ah ](jjeh"]h$]h&]jj)jhuh1j4hjBhMbhj)hhubj)}(hhh]h)}(hregisters a static debug areah]hregisters a static debug area}(hjChhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMWhj@hhubah}(h]h ]h"]h$]h&]uh1jhj)hhhjBhMbubeh}(h]h ](jfunctioneh"]h$]h&]j(jj)j[j*j[j+j,j-uh1j/hhhj hNhNubj/)}(hX^**Parameters** ``debug_info_t *id`` Handle for static debug area ``int pages_per_area`` Number of pages per area ``int nr_areas`` Number of debug areas **Description** Register debug_info_t defined using DEFINE_STATIC_DEBUG_INFO. **Note** This function is called automatically via an initcall generated by DEFINE_STATIC_DEBUG_INFO.h](h)}(h**Parameters**h]j9)}(hjeh]h Parameters}(hjghhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjcubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chM[hj_ubh)}(hhh](h)}(h2``debug_info_t *id`` Handle for static debug area h](h)}(h``debug_info_t 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]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chM[hjubh)}(hhh]h)}(hNumber of debug areash]hNumber of debug areas}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhj hM[hj ubah}(h]h ]h"]h$]h&]uh1hhjubeh}(h]h ]h"]h$]h&]uh1hhj hM[hj{ubeh}(h]h ]h"]h$]h&]uh1hhj_ubh)}(h**Description**h]j9)}(hj1h]h Description}(hj3hhhNhNubah}(h]h ]h"]h$]h&]uh1j8hj/ubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chM]hj_ubh)}(h=Register debug_info_t defined using DEFINE_STATIC_DEBUG_INFO.h]h=Register debug_info_t defined using DEFINE_STATIC_DEBUG_INFO.}(hjGhhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chM]hj_ubh)}(h**Note**h]j9)}(hjXh]hNote}(hjZhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjVubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chM_hj_ubh)}(hhh]h)}(h\This 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]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjjhhubah}(h]h ]h"]h$]h&]uh1jhjhhhjhMubeh}(h]h ](jfunctioneh"]h$]h&]j(jj)jj*jj+j,j-uh1j/hhhj hNhNubj/)}(hP**Parameters** ``debug_info_t *id`` handle for debug log **Return** noneh](h)}(h**Parameters**h]j9)}(hjh]h Parameters}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjubh)}(hhh]h)}(h*``debug_info_t *id`` handle for debug log h](h)}(h``debug_info_t *id``h]j)}(hjh]hdebug_info_t *id}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjubh)}(hhh]h)}(hhandle for debug logh]hhandle for debug log}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhMhjubah}(h]h ]h"]h$]h&]uh1hhjubeh}(h]h ]h"]h$]h&]uh1hhjhMhjubah}(h]h ]h"]h$]h&]uh1hhjubh)}(h **Return**h]j9)}(hjh]hReturn}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjubh block_quote)}(hnoneh]h)}(hjh]hnone}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjubah}(h]h ]h"]h$]h&]uh1jhjhMhjubeh}(h]h ] kernelindentah"]h$]h&]uh1j.hj hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](j+debug_set_level (C function)c.debug_set_levelhNtauh1jhj hhhNhNubj0)}(hhh](j5)}(h6void debug_set_level (debug_info_t *id, int new_level)h]j;)}(h5void debug_set_level(debug_info_t *id, int new_level)h](jA)}(hvoidh]hvoid}(hj9hhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hj5hhh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMubjS)}(h h]h }(hjHhhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj5hhhjGhMubjd)}(hdebug_set_levelh]jj)}(hdebug_set_levelh]hdebug_set_level}(hjZhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjVubah}(h]h ](j}j~eh"]h$]h&]j_j`uh1jchj5hhhjGhMubj)}(h!(debug_info_t *id, int new_level)h](j)}(hdebug_info_t *idh](h)}(hhh]jj)}(h debug_info_th]h debug_info_t}(hjyhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjvubah}(h]h ]h"]h$]h&] refdomainjreftypej reftargetj{modnameN classnameNjj)}j]j)}jj\sbc.debug_set_levelasbuh1hhjrubjS)}(h h]h }(hjhhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjrubj)}(hjh]h*}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjrubjj)}(hidh]hid}(hjhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjrubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjnubj)}(h int new_levelh](jA)}(hinth]hint}(hjhhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hjubjS)}(h h]h }(hjhhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjubjj)}(h new_levelh]h new_level}(hjhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjnubeh}(h]h ]h"]h$]h&]j_j`uh1jhj5hhhjGhMubeh}(h]h ]h"]h$]h&]j_j`juh1j:jjhj1hhhjGhMubah}(h]j,ah ](jjeh"]h$]h&]jj)jhuh1j4hjGhMhj.hhubj)}(hhh]h)}(h2Sets new actual debug level if new_level is valid.h]h2Sets new actual debug level if new_level is valid.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjhhubah}(h]h ]h"]h$]h&]uh1jhj.hhhjGhMubeh}(h]h ](jfunctioneh"]h$]h&]j(jj)j+j*j+j+j,j-uh1j/hhhj hNhNubj/)}(hu**Parameters** ``debug_info_t *id`` handle for debug log ``int new_level`` new debug level **Return** noneh](h)}(h**Parameters**h]j9)}(hj5h]h Parameters}(hj7hhhNhNubah}(h]h ]h"]h$]h&]uh1j8hj3ubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhj/ubh)}(hhh](h)}(h*``debug_info_t *id`` handle for debug log h](h)}(h``debug_info_t *id``h]j)}(hjTh]hdebug_info_t *id}(hjVhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjRubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjNubh)}(hhh]h)}(hhandle for debug logh]hhandle for debug log}(hjmhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjihMhjjubah}(h]h ]h"]h$]h&]uh1hhjNubeh}(h]h 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Once in this state, functions to write a debug entry for an event or exception no longer spin on the debug area lock, but only try to get it and fail if they do not get the lock.h]hCurrently used in case of stopping all CPUs but the current one. Once in this state, functions to write a debug entry for an event or exception no longer spin on the debug area lock, but only try to get it and fail if they do not get the lock.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhjubeh}(h]h ] kernelindentah"]h$]h&]uh1j.hj hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](j+ debug_register_view (C function)c.debug_register_viewhNtauh1jhj hhhNhNubj0)}(hhh](j5)}(hCint debug_register_view (debug_info_t *id, struct debug_view *view)h]j;)}(hBint debug_register_view(debug_info_t *id, struct debug_view *view)h](jA)}(hinth]hint}(hjhhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hjhhh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chM9ubjS)}(h h]h }(hjhhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjhhhjhM9ubjd)}(hdebug_register_viewh]jj)}(hdebug_register_viewh]hdebug_register_view}(hjhhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjubah}(h]h ](j}j~eh"]h$]h&]j_j`uh1jchjhhhjhM9ubj)}(h+(debug_info_t *id, struct debug_view *view)h](j)}(hdebug_info_t *idh](h)}(hhh]jj)}(h debug_info_th]h debug_info_t}(hj hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj ubah}(h]h ]h"]h$]h&] refdomainjreftypej reftargetj modnameN classnameNjj)}j]j)}jjsbc.debug_register_viewasbuh1hhj ubjS)}(h h]h }(hj: hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj ubj)}(hjh]h*}(hjH hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj ubjj)}(hidh]hid}(hjU hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhj ubj)}(hstruct debug_view *viewh](j )}(hj h]hstruct}(hjn hhhNhNubah}(h]h ]j ah"]h$]h&]uh1j hjj ubjS)}(h h]h }(hj{ hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjj ubh)}(hhh]jj)}(h debug_viewh]h debug_view}(hj hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj ubah}(h]h ]h"]h$]h&] refdomainjreftypej reftargetj modnameN classnameNjj)}j]j6 c.debug_register_viewasbuh1hhjj ubjS)}(h h]h }(hj hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjj ubj)}(hjh]h*}(hj hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjj ubjj)}(hviewh]hview}(hj hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjj ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhj ubeh}(h]h ]h"]h$]h&]j_j`uh1jhjhhhjhM9ubeh}(h]h ]h"]h$]h&]j_j`juh1j:jjhjhhhjhM9ubah}(h]jah ](jjeh"]h$]h&]jj)jhuh1j4hjhM9hjhhubj)}(hhh]h)}(h6registers new debug view and creates debugfs dir entryh]h6registers new debug view and creates debugfs dir entry}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chM/hj hhubah}(h]h ]h"]h$]h&]uh1jhjhhhjhM9ubeh}(h]h ](jfunctioneh"]h$]h&]j(jj)j!j*j!j+j,j-uh1j/hhhj hNhNubj/)}(h**Parameters** ``debug_info_t *id`` handle for debug log ``struct debug_view *view`` pointer to debug view struct **Return** - 0 : ok - < 0: Errorh](h)}(h**Parameters**h]j9)}(hj!h]h Parameters}(hj!hhhNhNubah}(h]h ]h"]h$]h&]uh1j8hj!ubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chM3hj !ubh)}(hhh](h)}(h*``debug_info_t *id`` handle for debug log h](h)}(h``debug_info_t *id``h]j)}(hj0!h]hdebug_info_t *id}(hj2!hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj.!ubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chM2hj*!ubh)}(hhh]h)}(hhandle for debug logh]hhandle for debug log}(hjI!hhhNhNubah}(h]h ]h"]h$]h&]uh1hhjE!hM2hjF!ubah}(h]h ]h"]h$]h&]uh1hhj*!ubeh}(h]h ]h"]h$]h&]uh1hhjE!hM2hj'!ubh)}(h9``struct debug_view *view`` pointer to debug view struct h](h)}(h``struct debug_view *view``h]j)}(hji!h]hstruct debug_view *view}(hjk!hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjg!ubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chM3hjc!ubh)}(hhh]h)}(hpointer to debug view structh]hpointer to debug view struct}(hj!hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj~!hM3hj!ubah}(h]h ]h"]h$]h&]uh1hhjc!ubeh}(h]h ]h"]h$]h&]uh1hhj~!hM3hj'!ubeh}(h]h ]h"]h$]h&]uh1hhj !ubh)}(h **Return**h]j9)}(hj!h]hReturn}(hj!hhhNhNubah}(h]h ]h"]h$]h&]uh1j8hj!ubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chM5hj !ubh)}(hhh](h)}(h0 : okh]h)}(hj!h]h0 : ok}(hj!hhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chM5hj!ubah}(h]h ]h"]h$]h&]uh1hhj!ubh)}(h < 0: Errorh]h)}(hj!h]h < 0: Error}(hj!hhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chM6hj!ubah}(h]h ]h"]h$]h&]uh1hhj!ubeh}(h]h ]h"]h$]h&]jjuh1hhj!hM5hj !ubeh}(h]h ] kernelindentah"]h$]h&]uh1j.hj hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](j+"debug_unregister_view (C function)c.debug_unregister_viewhNtauh1jhj hhhNhNubj0)}(hhh](j5)}(hEint debug_unregister_view (debug_info_t *id, struct debug_view *view)h]j;)}(hDint debug_unregister_view(debug_info_t *id, struct debug_view *view)h](jA)}(hinth]hint}(hj"hhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hj"hhh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMkubjS)}(h h]h }(hj""hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj"hhhj!"hMkubjd)}(hdebug_unregister_viewh]jj)}(hdebug_unregister_viewh]hdebug_unregister_view}(hj4"hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj0"ubah}(h]h ](j}j~eh"]h$]h&]j_j`uh1jchj"hhhj!"hMkubj)}(h+(debug_info_t *id, struct debug_view *view)h](j)}(hdebug_info_t *idh](h)}(hhh]jj)}(h debug_info_th]h debug_info_t}(hjS"hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjP"ubah}(h]h ]h"]h$]h&] refdomainjreftypej reftargetjU"modnameN classnameNjj)}j]j)}jj6"sbc.debug_unregister_viewasbuh1hhjL"ubjS)}(h h]h }(hjs"hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjL"ubj)}(hjh]h*}(hj"hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjL"ubjj)}(hidh]hid}(hj"hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjL"ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjH"ubj)}(hstruct debug_view *viewh](j )}(hj h]hstruct}(hj"hhhNhNubah}(h]h ]j ah"]h$]h&]uh1j hj"ubjS)}(h h]h }(hj"hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj"ubh)}(hhh]jj)}(h debug_viewh]h debug_view}(hj"hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj"ubah}(h]h ]h"]h$]h&] refdomainjreftypej reftargetj"modnameN classnameNjj)}j]jo"c.debug_unregister_viewasbuh1hhj"ubjS)}(h h]h }(hj"hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj"ubj)}(hjh]h*}(hj"hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj"ubjj)}(hviewh]hview}(hj"hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj"ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjH"ubeh}(h]h ]h"]h$]h&]j_j`uh1jhj"hhhj!"hMkubeh}(h]h ]h"]h$]h&]j_j`juh1j:jjhj "hhhj!"hMkubah}(h]j"ah ](jjeh"]h$]h&]jj)jhuh1j4hj!"hMkhj"hhubj)}(hhh]h)}(h4unregisters debug view and removes debugfs dir entryh]h4unregisters debug view and removes debugfs dir entry}(hj(#hhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMahj%#hhubah}(h]h ]h"]h$]h&]uh1jhj"hhhj!"hMkubeh}(h]h ](jfunctioneh"]h$]h&]j(jj)j@#j*j@#j+j,j-uh1j/hhhj hNhNubj/)}(h**Parameters** ``debug_info_t *id`` handle for debug log ``struct debug_view *view`` pointer to debug view struct **Return** - 0 : ok - < 0: Errorh](h)}(h**Parameters**h]j9)}(hjJ#h]h Parameters}(hjL#hhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjH#ubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMehjD#ubh)}(hhh](h)}(h*``debug_info_t *id`` handle for debug log h](h)}(h``debug_info_t *id``h]j)}(hji#h]hdebug_info_t *id}(hjk#hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjg#ubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMdhjc#ubh)}(hhh]h)}(hhandle for debug logh]hhandle for debug log}(hj#hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj~#hMdhj#ubah}(h]h ]h"]h$]h&]uh1hhjc#ubeh}(h]h ]h"]h$]h&]uh1hhj~#hMdhj`#ubh)}(h9``struct debug_view *view`` pointer to debug view struct h](h)}(h``struct debug_view *view``h]j)}(hj#h]hstruct debug_view *view}(hj#hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj#ubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMehj#ubh)}(hhh]h)}(hpointer to debug view structh]hpointer to debug view struct}(hj#hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj#hMehj#ubah}(h]h ]h"]h$]h&]uh1hhj#ubeh}(h]h ]h"]h$]h&]uh1hhj#hMehj`#ubeh}(h]h ]h"]h$]h&]uh1hhjD#ubh)}(h **Return**h]j9)}(hj#h]hReturn}(hj#hhhNhNubah}(h]h ]h"]h$]h&]uh1j8hj#ubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMghjD#ubh)}(hhh](h)}(h0 : okh]h)}(hj#h]h0 : ok}(hj#hhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMghj#ubah}(h]h ]h"]h$]h&]uh1hhj#ubh)}(h < 0: Errorh]h)}(hj$h]h < 0: Error}(hj$hhhNhNubah}(h]h ]h"]h$]h&]uh1hh[/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:112: ./arch/s390/kernel/debug.chMhhj$ubah}(h]h ]h"]h$]h&]uh1hhj#ubeh}(h]h ]h"]h$]h&]jjuh1hhj$hMghjD#ubeh}(h]h ] kernelindentah"]h$]h&]uh1j.hj hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](j+ debug_level_enabled (C function)c.debug_level_enabledhNtauh1jhj hhhNhNubj0)}(hhh](j5)}(h6bool debug_level_enabled (debug_info_t *id, int level)h]j;)}(h5bool debug_level_enabled(debug_info_t *id, int level)h](jA)}(hjDh]hbool}(hjL$hhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hjH$hhh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhKubjS)}(h h]h }(hjZ$hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjH$hhhjY$hKubjd)}(hdebug_level_enabledh]jj)}(hdebug_level_enabledh]hdebug_level_enabled}(hjl$hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjh$ubah}(h]h ](j}j~eh"]h$]h&]j_j`uh1jchjH$hhhjY$hKubj)}(h(debug_info_t *id, int level)h](j)}(hdebug_info_t *idh](h)}(hhh]jj)}(h debug_info_th]h debug_info_t}(hj$hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj$ubah}(h]h ]h"]h$]h&] refdomainjreftypej reftargetj$modnameN classnameNjj)}j]j)}jjn$sbc.debug_level_enabledasbuh1hhj$ubjS)}(h h]h }(hj$hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj$ubj)}(hjh]h*}(hj$hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj$ubjj)}(hidh]hid}(hj$hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj$ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhj$ubj)}(h int levelh](jA)}(hinth]hint}(hj$hhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hj$ubjS)}(h h]h }(hj$hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj$ubjj)}(hlevelh]hlevel}(hj$hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj$ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhj$ubeh}(h]h ]h"]h$]h&]j_j`uh1jhjH$hhhjY$hKubeh}(h]h ]h"]h$]h&]j_j`juh1j:jjhjD$hhhjY$hKubah}(h]j?$ah ](jjeh"]h$]h&]jj)jhuh1j4hjY$hKhjA$hhubj)}(hhh]h)}(h^Returns true if debug events for the specified level would be logged. 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Otherwise returns false.}(hj%%hhhNhNubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhKhj"%hhubah}(h]h ]h"]h$]h&]uh1jhjA$hhhjY$hKubeh}(h]h ](jfunctioneh"]h$]h&]j(jj)j=%j*j=%j+j,j-uh1j/hhhj hNhNubj/)}(h**Parameters** ``debug_info_t *id`` handle for debug log ``int level`` debug level **Return** - ``true`` if level is less or equal to the current debug level.h](h)}(h**Parameters**h]j9)}(hjG%h]h Parameters}(hjI%hhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjE%ubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhKhjA%ubh)}(hhh](h)}(h*``debug_info_t *id`` handle for debug log h](h)}(h``debug_info_t *id``h]j)}(hjf%h]hdebug_info_t *id}(hjh%hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjd%ubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhKhj`%ubh)}(hhh]h)}(hhandle for debug logh]hhandle for debug 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]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhKhj%ubah}(h]h ]h"]h$]h&]uh1hhj%ubah}(h]h ]h"]h$]h&]jjuh1hhj&hKhjA%ubeh}(h]h ] kernelindentah"]h$]h&]uh1j.hj hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](j+debug_event (C function) c.debug_eventhNtauh1jhj hhhNhNubj0)}(hhh](j5)}(hQdebug_entry_t * debug_event (debug_info_t *id, int level, void *data, int length)h]j;)}(hOdebug_entry_t *debug_event(debug_info_t *id, int level, void *data, int length)h](h)}(hhh]jj)}(h debug_entry_th]h debug_entry_t}(hjB&hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj?&ubah}(h]h ]h"]h$]h&] refdomainjreftypej reftargetjD&modnameN classnameNjj)}j]j)}j debug_eventsb c.debug_eventasbuh1hhj;&hhh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhKubjS)}(h h]h }(hjd&hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj;&hhhjc&hKubj)}(hjh]h*}(hjr&hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj;&hhhjc&hKubjd)}(h debug_eventh]jj)}(hj`&h]h 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]jah"]h$]h&]uh1jhj$'ubjj)}(hdatah]hdata}(hjQ'hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj$'ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhj&ubj)}(h int lengthh](jA)}(hinth]hint}(hjj'hhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hjf'ubjS)}(h h]h }(hjx'hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjf'ubjj)}(hlengthh]hlength}(hj'hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjf'ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhj&ubeh}(h]h ]h"]h$]h&]j_j`uh1jhj;&hhhjc&hKubeh}(h]h ]h"]h$]h&]j_j`juh1j:jjhj7&hhhjc&hKubah}(h]j2&ah ](jjeh"]h$]h&]jj)jhuh1j4hjc&hKhj4&hhubj)}(hhh]h)}(hOwrites binary debug entry to active debug area (if level <= actual debug level)h]hOwrites binary debug entry to active debug area (if level <= actual debug level)}(hj'hhhNhNubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhKhj'hhubah}(h]h ]h"]h$]h&]uh1jhj4&hhhjc&hKubeh}(h]h ](jfunctioneh"]h$]h&]j(jj)j'j*j'j+j,j-uh1j/hhhj hNhNubj/)}(h**Parameters** ``debug_info_t *id`` handle for debug log ``int level`` debug level ``void *data`` pointer to data for debug entry ``int length`` length of data in bytes **Return** - Address of written debug entry - ``NULL`` if errorh](h)}(h**Parameters**h]j9)}(hj'h]h Parameters}(hj'hhhNhNubah}(h]h ]h"]h$]h&]uh1j8hj'ubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhKhj'ubh)}(hhh](h)}(h*``debug_info_t *id`` handle for debug log h](h)}(h``debug_info_t *id``h]j)}(hj'h]hdebug_info_t *id}(hj'hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj'ubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhKhj'ubh)}(hhh]h)}(hhandle for debug logh]hhandle for debug log}(hj (hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj(hKhj(ubah}(h]h ]h"]h$]h&]uh1hhj'ubeh}(h]h ]h"]h$]h&]uh1hhj(hKhj'ubh)}(h``int level`` debug level h](h)}(h ``int level``h]j)}(hj*(h]h int level}(hj,(hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj((ubah}(h]h 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./arch/s390/include/asm/debug.hhKhj(ubh)}(hhh]h)}(hlength of data in bytesh]hlength of data in bytes}(hj(hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj(hKhj(ubah}(h]h ]h"]h$]h&]uh1hhj(ubeh}(h]h ]h"]h$]h&]uh1hhj(hKhj'ubeh}(h]h ]h"]h$]h&]uh1hhj'ubh)}(h **Return**h]j9)}(hj(h]hReturn}(hj(hhhNhNubah}(h]h ]h"]h$]h&]uh1j8hj(ubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhKhj'ubh)}(hhh](h)}(hAddress of written debug entryh]h)}(hj(h]hAddress of written debug entry}(hj(hhhNhNubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhKhj(ubah}(h]h ]h"]h$]h&]uh1hhj(ubh)}(h``NULL`` if errorh]h)}(hj )h](j)}(h``NULL``h]hNULL}(hj)hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj )ubh if error}(hj )hhhNhNubeh}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhKhj)ubah}(h]h ]h"]h$]h&]uh1hhj(ubeh}(h]h ]h"]h$]h&]jjuh1hhj)hKhj'ubeh}(h]h ] kernelindentah"]h$]h&]uh1j.hj hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](j+debug_int_event (C function)c.debug_int_eventhNtauh1jhj hhhNhNubj0)}(hhh](j5)}(hOdebug_entry_t * debug_int_event (debug_info_t *id, int level, unsigned int tag)h]j;)}(hMdebug_entry_t *debug_int_event(debug_info_t *id, int level, unsigned int tag)h](h)}(hhh]jj)}(h debug_entry_th]h debug_entry_t}(hjW)hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjT)ubah}(h]h ]h"]h$]h&] refdomainjreftypej reftargetjY)modnameN classnameNjj)}j]j)}jdebug_int_eventsbc.debug_int_eventasbuh1hhjP)hhh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhKubjS)}(h h]h }(hjy)hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjP)hhhjx)hKubj)}(hjh]h*}(hj)hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjP)hhhjx)hKubjd)}(hdebug_int_eventh]jj)}(hju)h]hdebug_int_event}(hj)hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj)ubah}(h]h ](j}j~eh"]h$]h&]j_j`uh1jchjP)hhhjx)hKubj)}(h/(debug_info_t *id, int level, unsigned int tag)h](j)}(hdebug_info_t *idh](h)}(hhh]jj)}(h debug_info_th]h debug_info_t}(hj)hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj)ubah}(h]h ]h"]h$]h&] refdomainjreftypej reftargetj)modnameN classnameNjj)}j]js)c.debug_int_eventasbuh1hhj)ubjS)}(h h]h }(hj)hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj)ubj)}(hjh]h*}(hj)hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj)ubjj)}(hidh]hid}(hj)hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj)ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhj)ubj)}(h int levelh](jA)}(hinth]hint}(hj*hhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hj*ubjS)}(h h]h }(hj*hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj*ubjj)}(hlevelh]hlevel}(hj$*hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj*ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhj)ubj)}(hunsigned int tagh](jA)}(hunsignedh]hunsigned}(hj=*hhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hj9*ubjS)}(h h]h }(hjK*hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj9*ubjA)}(hinth]hint}(hjY*hhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hj9*ubjS)}(h h]h }(hjg*hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj9*ubjj)}(htagh]htag}(hju*hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj9*ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhj)ubeh}(h]h ]h"]h$]h&]j_j`uh1jhjP)hhhjx)hKubeh}(h]h ]h"]h$]h&]j_j`juh1j:jjhjL)hhhjx)hKubah}(h]jG)ah ](jjeh"]h$]h&]jj)jhuh1j4hjx)hKhjI)hhubj)}(hhh]h)}(hYwrites unsigned integer debug entry to active debug area (if level <= actual debug level)h]hYwrites unsigned integer debug entry to active debug area (if level <= actual debug level)}(hj*hhhNhNubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhKhj*hhubah}(h]h ]h"]h$]h&]uh1jhjI)hhhjx)hKubeh}(h]h ](jfunctioneh"]h$]h&]j(jj)j*j*j*j+j,j-uh1j/hhhj hNhNubj/)}(h**Parameters** ``debug_info_t *id`` handle for debug log ``int level`` debug level ``unsigned int tag`` integer value for debug entry **Return** - Address of written debug entry - ``NULL`` if errorh](h)}(h**Parameters**h]j9)}(hj*h]h Parameters}(hj*hhhNhNubah}(h]h ]h"]h$]h&]uh1j8hj*ubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: 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tag}(hjT+hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjP+ubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhKhjL+ubh)}(hhh]h)}(hinteger value for debug entryh]hinteger value for debug entry}(hjk+hhhNhNubah}(h]h ]h"]h$]h&]uh1hhjg+hKhjh+ubah}(h]h ]h"]h$]h&]uh1hhjL+ubeh}(h]h ]h"]h$]h&]uh1hhjg+hKhj*ubeh}(h]h ]h"]h$]h&]uh1hhj*ubh)}(h **Return**h]j9)}(hj+h]hReturn}(hj+hhhNhNubah}(h]h ]h"]h$]h&]uh1j8hj+ubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhKhj*ubh)}(hhh](h)}(hAddress of written debug entryh]h)}(hj+h]hAddress of written debug entry}(hj+hhhNhNubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhKhj+ubah}(h]h ]h"]h$]h&]uh1hhj+ubh)}(h``NULL`` if errorh]h)}(hj+h](j)}(h``NULL``h]hNULL}(hj+hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj+ubh if error}(hj+hhhNhNubeh}(h]h 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levelh](jA)}(hinth]hint}(hj:hhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hj:ubjS)}(h h]h }(hj$:hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj:ubjj)}(hlevelh]hlevel}(hj2:hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj:ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhj9ubj)}(hunsigned long tagh](jA)}(hunsignedh]hunsigned}(hjK:hhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hjG:ubjS)}(h h]h }(hjY:hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjG:ubjA)}(hlongh]hlong}(hjg:hhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hjG:ubjS)}(h h]h }(hju:hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjG:ubjj)}(htagh]htag}(hj:hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjG:ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhj9ubeh}(h]h ]h"]h$]h&]j_j`uh1jhj^9hhhj9hMHubeh}(h]h ]h"]h$]h&]j_j`juh1j:jjhjZ9hhhj9hMHubah}(h]jU9ah ](jjeh"]h$]h&]jj)jhuh1j4hj9hMHhjW9hhubj)}(hhh]h)}(hmwrites long debug entry to active debug area (if level <= actual debug level) and switches to next debug areah]hmwrites long debug entry to active debug area (if level <= actual debug level) and switches to next debug area}(hj:hhhNhNubah}(h]h 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log}(hj;hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj;hM@hj;ubah}(h]h ]h"]h$]h&]uh1hhj:ubeh}(h]h ]h"]h$]h&]uh1hhj;hM@hj:ubh)}(h``int level`` debug level h](h)}(h ``int level``h]j)}(hj';h]h int level}(hj);hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj%;ubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMAhj!;ubh)}(hhh]h)}(h debug levelh]h debug level}(hj@;hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj<;hMAhj=;ubah}(h]h ]h"]h$]h&]uh1hhj!;ubeh}(h]h ]h"]h$]h&]uh1hhj<;hMAhj:ubh)}(h9``unsigned long tag`` long integer value for debug entry h](h)}(h``unsigned long tag``h]j)}(hj`;h]hunsigned long tag}(hjb;hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj^;ubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMBhjZ;ubh)}(hhh]h)}(h"long integer value for debug entryh]h"long integer value for debug entry}(hjy;hhhNhNubah}(h]h ]h"]h$]h&]uh1hhju;hMBhjv;ubah}(h]h ]h"]h$]h&]uh1hhjZ;ubeh}(h]h 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refdomainjreftypej reftargetj|<modnameN classnameNjj)}j]j7<c.debug_text_exceptionasbuh1hhjs<ubjS)}(h h]h }(hj<hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhjs<ubj)}(hjh]h*}(hj<hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjs<ubjj)}(hidh]hid}(hj<hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihjs<ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjo<ubj)}(h int levelh](jA)}(hinth]hint}(hj<hhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hj<ubjS)}(h h]h }(hj<hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj<ubjj)}(hlevelh]hlevel}(hj<hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj<ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjo<ubj)}(hconst char *txth](j )}(hjh]hconst}(hj=hhhNhNubah}(h]h ]j ah"]h$]h&]uh1j hj<ubjS)}(h h]h }(hj=hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj<ubjA)}(hcharh]hchar}(hj=hhhNhNubah}(h]h ]jMah"]h$]h&]uh1j@hj<ubjS)}(h h]h }(hj*=hhhNhNubah}(h]h ]j_ah"]h$]h&]uh1jRhj<ubj)}(hjh]h*}(hj8=hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj<ubjj)}(htxth]htxt}(hjE=hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj<ubeh}(h]h ]h"]h$]h&]noemphj_j`uh1jhjo<ubeh}(h]h ]h"]h$]h&]j_j`uh1jhj<hhhj<<hM`ubeh}(h]h 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]h"]h$]h&]uh1jhj >ubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMZhj>ubh)}(hhh]h)}(hstring for debug entryh]hstring for debug entry}(hj;>hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj7>hMZhj8>ubah}(h]h ]h"]h$]h&]uh1hhj>ubeh}(h]h ]h"]h$]h&]uh1hhj7>hMZhj=ubeh}(h]h ]h"]h$]h&]uh1hhj=ubh)}(h **Return**h]j9)}(hj]>h]hReturn}(hj_>hhhNhNubah}(h]h ]h"]h$]h&]uh1j8hj[>ubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhM\hj=ubh)}(hhh](h)}(hAddress of written debug entryh]h)}(hjx>h]hAddress of written debug entry}(hjz>hhhNhNubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhM\hjv>ubah}(h]h ]h"]h$]h&]uh1hhjs>ubh)}(h``NULL`` if errorh]h)}(hj>h](j)}(h``NULL``h]hNULL}(hj>hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj>ubh if error}(hj>hhhNhNubeh}(h]h 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**Return**h]j9)}(hjJ@h]hReturn}(hjL@hhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjH@ubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhM|hj??ubh)}(hhh](h)}(hAddress of written debug entryh]h)}(hje@h]hAddress of written debug entry}(hjg@hhhNhNubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhM|hjc@ubah}(h]h ]h"]h$]h&]uh1hhj`@ubh)}(h``NULL`` if error h]h)}(h``NULL`` if errorh](j)}(h``NULL``h]hNULL}(hj@hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj@ubh if error}(hj@hhhNhNubeh}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhM}hj{@ubah}(h]h ]h"]h$]h&]uh1hhj`@ubeh}(h]h ]h"]h$]h&]jjuh1hhjt@hM|hj??ubh)}(h**Description**h]j9)}(hj@h]h Description}(hj@hhhNhNubah}(h]h ]h"]h$]h&]uh1j8hj@ubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMhj??ubh)}(h9floats and long long datatypes cannot be used as varargs.h]h9floats and long long datatypes cannot be used as varargs.}(hj@hhhNhNubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMhj??ubeh}(h]h ] kernelindentah"]h$]h&]uh1j.hj hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](j+"DEFINE_STATIC_DEBUG_INFO (C macro)c.DEFINE_STATIC_DEBUG_INFOhNtauh1jhj hhhNhNubj0)}(hhh](j5)}(hDEFINE_STATIC_DEBUG_INFOh]j;)}(hDEFINE_STATIC_DEBUG_INFOh]jd)}(hDEFINE_STATIC_DEBUG_INFOh]jj)}(hj@h]hDEFINE_STATIC_DEBUG_INFO}(hj@hhhNhNubah}(h]h ]jvah"]h$]h&]uh1jihj@ubah}(h]h ](j}j~eh"]h$]h&]j_j`uh1jchj@hhh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMubah}(h]h ]h"]h$]h&]j_j`juh1j:jjhj@hhhjAhMubah}(h]j@ah ](jjeh"]h$]h&]jj)jhuh1j4hjAhMhj@hhubj)}(hhh]h}(h]h ]h"]h$]h&]uh1jhj@hhhjAhMubeh}(h]h ](jmacroeh"]h$]h&]j(jj)jAj*jAj+j,j-uh1j/hhhj hNhNubh)}(hI``DEFINE_STATIC_DEBUG_INFO (var, name, pages, nr_areas, buf_size, view)``h]j)}(hj%Ah]hEDEFINE_STATIC_DEBUG_INFO (var, name, pages, nr_areas, buf_size, view)}(hj'AhhhNhNubah}(h]h ]h"]h$]h&]uh1jhj#Aubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMhj hhubj)}(hDefine static debug_info_t h]h)}(hDefine static debug_info_th]hDefine static debug_info_t}(hj?AhhhNhNubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMhj;Aubah}(h]h ]h"]h$]h&]uh1jhjMAhMhj hhubj/)}(hX**Parameters** ``var`` Name of debug_info_t variable ``name`` Name of debug log (e.g. used for debugfs entry) ``pages`` Number of pages per area ``nr_areas`` Number of debug areas ``buf_size`` Size of data area in each debug entry ``view`` Pointer to debug view struct **Description** Define a static debug_info_t for early tracing. The associated debugfs log is automatically registered with the specified debug view. Important: Users of this macro must not call any of the debug_register/_unregister() functions for this debug_info_t! **Note** Tracing will start with a fixed number of initial pages and areas. The debug area will be changed to use the specified numbers during arch_initcall.h](h)}(h**Parameters**h]j9)}(hjZAh]h Parameters}(hj\AhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjXAubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMhjTAubh)}(hhh](h)}(h&``var`` Name of debug_info_t variable h](h)}(h``var``h]j)}(hjyAh]hvar}(hj{AhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjwAubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMhjsAubh)}(hhh]h)}(hName of debug_info_t variableh]hName of debug_info_t variable}(hjAhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjAhMhjAubah}(h]h ]h"]h$]h&]uh1hhjsAubeh}(h]h ]h"]h$]h&]uh1hhjAhMhjpAubh)}(h9``name`` Name of debug log (e.g. used for debugfs entry) h](h)}(h``name``h]j)}(hjAh]hname}(hjAhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjAubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMhjAubh)}(hhh]h)}(h/Name of debug log (e.g. used for debugfs entry)h]h/Name of debug log (e.g. used for debugfs entry)}(hjAhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjAhMhjAubah}(h]h ]h"]h$]h&]uh1hhjAubeh}(h]h ]h"]h$]h&]uh1hhjAhMhjpAubh)}(h#``pages`` Number of pages per area h](h)}(h ``pages``h]j)}(hjAh]hpages}(hjAhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjAubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMhjAubh)}(hhh]h)}(hNumber of pages per areah]hNumber of pages per area}(hjBhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjBhMhjBubah}(h]h ]h"]h$]h&]uh1hhjAubeh}(h]h ]h"]h$]h&]uh1hhjBhMhjpAubh)}(h#``nr_areas`` Number of debug areas h](h)}(h ``nr_areas``h]j)}(hj$Bh]hnr_areas}(hj&BhhhNhNubah}(h]h ]h"]h$]h&]uh1jhj"Bubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMhjBubh)}(hhh]h)}(hNumber of debug areash]hNumber of debug areas}(hj=BhhhNhNubah}(h]h ]h"]h$]h&]uh1hhj9BhMhj:Bubah}(h]h ]h"]h$]h&]uh1hhjBubeh}(h]h ]h"]h$]h&]uh1hhj9BhMhjpAubh)}(h3``buf_size`` Size of data area in each debug entry h](h)}(h ``buf_size``h]j)}(hj]Bh]hbuf_size}(hj_BhhhNhNubah}(h]h ]h"]h$]h&]uh1jhj[Bubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMhjWBubh)}(hhh]h)}(h%Size of data area in each debug entryh]h%Size of data area in each debug entry}(hjvBhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjrBhMhjsBubah}(h]h ]h"]h$]h&]uh1hhjWBubeh}(h]h ]h"]h$]h&]uh1hhjrBhMhjpAubh)}(h&``view`` Pointer to debug view struct h](h)}(h``view``h]j)}(hjBh]hview}(hjBhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjBubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMhjBubh)}(hhh]h)}(hPointer to debug view structh]hPointer to debug view struct}(hjBhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjBhMhjBubah}(h]h ]h"]h$]h&]uh1hhjBubeh}(h]h ]h"]h$]h&]uh1hhjBhMhjpAubeh}(h]h ]h"]h$]h&]uh1hhjTAubh)}(h**Description**h]j9)}(hjBh]h Description}(hjBhhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjBubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMhjTAubh)}(hDefine a static debug_info_t for early tracing. The associated debugfs log is automatically registered with the specified debug view.h]hDefine a static debug_info_t for early tracing. The associated debugfs log is automatically registered with the specified debug view.}(hjBhhhNhNubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMhjTAubh)}(huImportant: Users of this macro must not call any of the debug_register/_unregister() functions for this debug_info_t!h]huImportant: Users of this macro must not call any of the debug_register/_unregister() functions for this debug_info_t!}(hjBhhhNhNubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMhjTAubh)}(h**Note**h]j9)}(hjCh]hNote}(hj ChhhNhNubah}(h]h ]h"]h$]h&]uh1j8hjCubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMhjTAubh)}(hTracing will start with a fixed number of initial pages and areas. The debug area will be changed to use the specified numbers during arch_initcall.h]hTracing will start with a fixed number of initial pages and areas. The debug area will be changed to use the specified numbers during arch_initcall.}(hjChhhNhNubah}(h]h ]h"]h$]h&]uh1hh`/var/lib/git/docbuild/linux/Documentation/arch/s390/s390dbf:113: ./arch/s390/include/asm/debug.hhMhjTAubeh}(h]h ] kernelindentah"]h$]h&]uh1j.hj hhhNhNubeh}(h]kernel-interfacesah ]h"]kernel interfaces:ah$]h&]uh1hhhhhhhhKnubh)}(hhh](h)}(hPredefined views:h]hPredefined views:}(hj>ChhhNhNubah}(h]h ]h"]h$]h&]uh1hhj;ChhhhhKtubjP)}(h\extern struct debug_view debug_hex_ascii_view; extern struct debug_view debug_sprintf_view;h]h\extern struct debug_view debug_hex_ascii_view; extern struct debug_view debug_sprintf_view;}hjLCsbah}(h]h ]h"]h$]h&]j_j`forcelanguagejhighlight_args}uh1jOhhhKvhj;Chhubeh}(h]predefined-viewsah ]h"]predefined views:ah$]h&]uh1hhhhhhhhKtubh)}(hhh](h)}(hExamplesh]hExamples}(hjiChhhNhNubah}(h]h ]h"]h$]h&]uh1hhjfChhhhhK}ubjP)}(hXN/* * hex_ascii-view Example */ #include #include static debug_info_t *debug_info; static int init(void) { /* register 4 debug areas with one page each and 4 byte data field */ debug_info = debug_register("test", 1, 4, 4 ); debug_register_view(debug_info, &debug_hex_ascii_view); debug_text_event(debug_info, 4 , "one "); debug_int_exception(debug_info, 4, 4711); debug_event(debug_info, 3, &debug_info, 4); return 0; } static void cleanup(void) { debug_unregister(debug_info); } module_init(init); module_exit(cleanup);h]hXN/* * hex_ascii-view Example */ #include #include static debug_info_t *debug_info; static int init(void) { /* register 4 debug areas with one page each and 4 byte data field */ debug_info = debug_register("test", 1, 4, 4 ); debug_register_view(debug_info, &debug_hex_ascii_view); debug_text_event(debug_info, 4 , "one "); debug_int_exception(debug_info, 4, 4711); debug_event(debug_info, 3, &debug_info, 4); return 0; } static void cleanup(void) { debug_unregister(debug_info); } module_init(init); module_exit(cleanup);}hjwCsbah}(h]h ]h"]h$]h&]j_j`jZCj[Cjj\C}uh1jOhhhKhjfChhubjP)}(hX/* * sprintf-view Example */ #include #include static debug_info_t *debug_info; static int init(void) { /* register 4 debug areas with one page each and data field for */ /* format string pointer + 2 varargs (= 3 * sizeof(long)) */ debug_info = debug_register("test", 1, 4, sizeof(long) * 3); debug_register_view(debug_info, &debug_sprintf_view); debug_sprintf_event(debug_info, 2 , "first event in %s:%i\n",__FILE__,__LINE__); debug_sprintf_exception(debug_info, 1, "pointer to debug info: %p\n",&debug_info); return 0; } static void cleanup(void) { debug_unregister(debug_info); } module_init(init); module_exit(cleanup);h]hX/* * sprintf-view Example */ #include #include static debug_info_t *debug_info; static int init(void) { /* register 4 debug areas with one page each and data field for */ /* format string pointer + 2 varargs (= 3 * sizeof(long)) */ debug_info = debug_register("test", 1, 4, sizeof(long) * 3); debug_register_view(debug_info, &debug_sprintf_view); debug_sprintf_event(debug_info, 2 , "first event in %s:%i\n",__FILE__,__LINE__); debug_sprintf_exception(debug_info, 1, "pointer to debug info: %p\n",&debug_info); return 0; } static void cleanup(void) { debug_unregister(debug_info); } module_init(init); module_exit(cleanup);}hjCsbah}(h]h ]h"]h$]h&]j_j`jZCj[Cjj\C}uh1jOhhhKhjfChhubeh}(h]examplesah ]h"]examplesah$]h&]uh1hhhhhhhhK}ubh)}(hhh](h)}(hDebugfs Interfaceh]hDebugfs Interface}(hjChhhNhNubah}(h]h ]h"]h$]h&]uh1hhjChhhhhKubh)}(h\Views to the debug logs can be investigated through reading the corresponding debugfs-files:h]h\Views to the debug logs can be investigated through reading the corresponding debugfs-files:}(hjChhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjChhubh)}(h Example::h]hExample:}(hjChhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjChhubjP)}(hX> ls /sys/kernel/debug/s390dbf/dasd flush hex_ascii level pages > cat /sys/kernel/debug/s390dbf/dasd/hex_ascii | sort -k2,2 -s 00 00974733272:680099 2 - 02 0006ad7e 07 ea 4a 90 | .... 00 00974733272:682210 2 - 02 0006ade6 46 52 45 45 | FREE 00 00974733272:682213 2 - 02 0006adf6 07 ea 4a 90 | .... 00 00974733272:682281 1 * 02 0006ab08 41 4c 4c 43 | EXCP 01 00974733272:682284 2 - 02 0006ab16 45 43 4b 44 | ECKD 01 00974733272:682287 2 - 02 0006ab28 00 00 00 04 | .... 01 00974733272:682289 2 - 02 0006ab3e 00 00 00 20 | ... 01 00974733272:682297 2 - 02 0006ad7e 07 ea 4a 90 | .... 01 00974733272:684384 2 - 00 0006ade6 46 52 45 45 | FREE 01 00974733272:684388 2 - 00 0006adf6 07 ea 4a 90 | ....h]hX> ls /sys/kernel/debug/s390dbf/dasd flush hex_ascii level pages > cat /sys/kernel/debug/s390dbf/dasd/hex_ascii | sort -k2,2 -s 00 00974733272:680099 2 - 02 0006ad7e 07 ea 4a 90 | .... 00 00974733272:682210 2 - 02 0006ade6 46 52 45 45 | FREE 00 00974733272:682213 2 - 02 0006adf6 07 ea 4a 90 | .... 00 00974733272:682281 1 * 02 0006ab08 41 4c 4c 43 | EXCP 01 00974733272:682284 2 - 02 0006ab16 45 43 4b 44 | ECKD 01 00974733272:682287 2 - 02 0006ab28 00 00 00 04 | .... 01 00974733272:682289 2 - 02 0006ab3e 00 00 00 20 | ... 01 00974733272:682297 2 - 02 0006ad7e 07 ea 4a 90 | .... 01 00974733272:684384 2 - 00 0006ade6 46 52 45 45 | FREE 01 00974733272:684388 2 - 00 0006adf6 07 ea 4a 90 | ....}hjCsbah}(h]h ]h"]h$]h&]j_j`uh1jOhhhKhjChhubh)}(hGSee section about predefined views for explanation of the above output!h]hGSee section about predefined views for explanation of the above output!}(hjChhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjChhubeh}(h]debugfs-interfaceah ]h"]debugfs interfaceah$]h&]uh1hhhhhhhhKubh)}(hhh](h)}(hChanging the debug levelh]hChanging the debug level}(hjChhhNhNubah}(h]h ]h"]h$]h&]uh1hhjChhhhhKubh)}(h Example::h]hExample:}(hjChhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjChhubjP)}(h> cat /sys/kernel/debug/s390dbf/dasd/level 3 > echo "5" > /sys/kernel/debug/s390dbf/dasd/level > cat /sys/kernel/debug/s390dbf/dasd/level 5h]h> cat /sys/kernel/debug/s390dbf/dasd/level 3 > echo "5" > /sys/kernel/debug/s390dbf/dasd/level > cat /sys/kernel/debug/s390dbf/dasd/level 5}hj Dsbah}(h]h ]h"]h$]h&]j_j`uh1jOhhhKhjChhubeh}(h]changing-the-debug-levelah ]h"]changing the debug levelah$]h&]uh1hhhhhhhhKubh)}(hhh](h)}(hFlushing debug areash]hFlushing debug areas}(hj&DhhhNhNubah}(h]h ]h"]h$]h&]uh1hhj#DhhhhhKubh)}(hDebug areas can be flushed with piping the number of the desired area (0...n) to the debugfs file "flush". When using "-" all debug areas are flushed.h]hDebug areas can be flushed with piping the number of the desired area (0...n) to the debugfs file “flush”. When using “-” all debug areas are flushed.}(hj4DhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhj#Dhhubh)}(h Examples:h]h Examples:}(hjBDhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhj#Dhhubhenumerated_list)}(hhh](h)}(hJFlush debug area 0:: > echo "0" > /sys/kernel/debug/s390dbf/dasd/flush h](h)}(hFlush debug area 0::h]hFlush debug area 0:}(hjYDhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjUDubjP)}(h1> echo "0" > /sys/kernel/debug/s390dbf/dasd/flushh]h1> echo "0" > /sys/kernel/debug/s390dbf/dasd/flush}hjgDsbah}(h]h ]h"]h$]h&]j_j`uh1jOhhhKhjUDubeh}(h]h ]h"]h$]h&]uh1hhjRDhhhhhNubh)}(hMFlush all debug areas:: > echo "-" > /sys/kernel/debug/s390dbf/dasd/flush h](h)}(hFlush all debug areas::h]hFlush all debug areas:}(hjDhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhj{DubjP)}(h1> echo "-" > /sys/kernel/debug/s390dbf/dasd/flushh]h1> echo "-" > /sys/kernel/debug/s390dbf/dasd/flush}hjDsbah}(h]h ]h"]h$]h&]j_j`uh1jOhhhKhj{Dubeh}(h]h ]h"]h$]h&]uh1hhjRDhhhhhNubeh}(h]h ]h"]h$]h&]enumtypearabicprefixhsuffix.uh1jPDhj#DhhhhhKubeh}(h]flushing-debug-areasah ]h"]flushing debug areasah$]h&]uh1hhhhhhhhKubh)}(hhh](h)}(h Changing the size of debug areash]h Changing the size of debug areas}(hjDhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjDhhhhhKubh)}(hIt is possible the change the size of debug areas through piping the number of pages to the debugfs file "pages". The resize request will also flush the debug areas.h]hIt is possible the change the size of debug areas through piping the number of pages to the debugfs file “pages”. The resize request will also flush the debug areas.}(hjDhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjDhhubh)}(hExample:h]hExample:}(hjDhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjDhhubh)}(h echo "4" > /sys/kernel/debug/s390dbf/dasd/pagesh]h1> echo "4" > /sys/kernel/debug/s390dbf/dasd/pages}hjDsbah}(h]h ]h"]h$]h&]j_j`uh1jOhhhKhjDhhubeh}(h] changing-the-size-of-debug-areasah ]h"] changing the size of debug areasah$]h&]uh1hhhhhhhhKubh)}(hhh](h)}(hStopping the debug featureh]hStopping the debug feature}(hjEhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjEhhhhhMubh)}(hExample:h]hExample:}(hjEhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhMhjEhhubjQD)}(hhh](h)}(hJCheck if stopping is allowed:: > cat /proc/sys/s390dbf/debug_stoppable h](h)}(hCheck if stopping is allowed::h]hCheck if stopping is allowed:}(hj+EhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhMhj'EubjP)}(h'> cat /proc/sys/s390dbf/debug_stoppableh]h'> cat /proc/sys/s390dbf/debug_stoppable}hj9Esbah}(h]h ]h"]h$]h&]j_j`uh1jOhhhMhj'Eubeh}(h]h ]h"]h$]h&]uh1hhj$EhhhhhNubh)}(hBStop debug feature:: > echo 0 > /proc/sys/s390dbf/debug_active h](h)}(hStop debug feature::h]hStop debug feature:}(hjQEhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhMhjMEubjP)}(h)> echo 0 > /proc/sys/s390dbf/debug_activeh]h)> echo 0 > /proc/sys/s390dbf/debug_active}hj_Esbah}(h]h ]h"]h$]h&]j_j`uh1jOhhhM hjMEubeh}(h]h ]h"]h$]h&]uh1hhj$EhhhhhNubeh}(h]h ]h"]h$]h&]jDjDjDhjDjDuh1jPDhjEhhhhhMubeh}(h]stopping-the-debug-featureah ]h"]stopping the debug featureah$]h&]uh1hhhhhhhhMubh)}(hhh](h)}(hcrash Interfaceh]hcrash Interface}(hjEhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjEhhhhhM ubh)}(hThe ``crash`` tool since v5.1.0 has a built-in command ``s390dbf`` to display all the debug logs or export them to the file system. With this tool it is possible to investigate the debug logs on a live system and with a memory dump after a system crash.h](hThe }(hjEhhhNhNubj)}(h ``crash``h]hcrash}(hjEhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjEubh* tool since v5.1.0 has a built-in command }(hjEhhhNhNubj)}(h ``s390dbf``h]hs390dbf}(hjEhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjEubh to display all the debug logs or export them to the file system. With this tool it is possible to investigate the debug logs on a live system and with a memory dump after a system crash.}(hjEhhhNhNubeh}(h]h ]h"]h$]h&]uh1hhhhMhjEhhubeh}(h]crash-interfaceah ]h"]crash interfaceah$]h&]uh1hhhhhhhhM ubh)}(hhh](h)}(hInvestigating raw memoryh]hInvestigating raw memory}(hjEhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjEhhhhhMubh)}(hXJOne last possibility to investigate the debug logs at a live system and after a system crash is to look at the raw memory under VM or at the Service Element. It is possible to find the anchor of the debug-logs through the ``debug_area_first`` symbol in the System map. Then one has to follow the correct pointers of the data-structures defined in debug.h and find the debug-areas in memory. Normally modules which use the debug feature will also have a global variable with the pointer to the debug-logs. Following this pointer it will also be possible to find the debug logs in memory.h](hOne last possibility to investigate the debug logs at a live system and after a system crash is to look at the raw memory under VM or at the Service Element. It is possible to find the anchor of the debug-logs through the }(hjEhhhNhNubj)}(h``debug_area_first``h]hdebug_area_first}(hjEhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjEubhXX symbol in the System map. Then one has to follow the correct pointers of the data-structures defined in debug.h and find the debug-areas in memory. Normally modules which use the debug feature will also have a global variable with the pointer to the debug-logs. Following this pointer it will also be possible to find the debug logs in memory.}(hjEhhhNhNubeh}(h]h ]h"]h$]h&]uh1hhhhMhjEhhubh)}(hFor this method it is recommended to use '16 * x + 4' byte (x = 0..n) for the length of the data field in :c:func:`debug_register()` in order to see the debug entries well formatted.h](hnFor this method it is recommended to use ‘16 * x + 4’ byte (x = 0..n) for the length of the data field in }(hjEhhhNhNubh)}(h:c:func:`debug_register()`h]j)}(hjFh]hdebug_register()}(hj FhhhNhNubah}(h]h ](jjc-funceh"]h$]h&]uh1jhjFubah}(h]h ]h"]h$]h&]refdocj refdomainjreftypefunc refexplicitrefwarnjj)}j]sbjdebug_registeruh1hhhhM"hjEubh2 in order to see the debug entries well formatted.}(hjEhhhNhNubeh}(h]h ]h"]h$]h&]uh1hhhhM"hjEhhubeh}(h]investigating-raw-memoryah ]h"]investigating raw memoryah$]h&]uh1hhhhhhhhMubh)}(hhh](h)}(hPredefined Viewsh]hPredefined Views}(hj /sys/kernel/debug/s390dbf/dasd/level``).h](heThe input_proc can be used to implement functionality when it is written to the view (e.g. like with }(hj@HhhhNhNubj)}(h3``echo "0" > /sys/kernel/debug/s390dbf/dasd/level``h]h/echo "0" > /sys/kernel/debug/s390dbf/dasd/level}(hjHHhhhNhNubah}(h]h ]h"]h$]h&]uh1jhj@Hubh).}(hj@HhhhNhNubeh}(h]h ]h"]h$]h&]uh1hhhhMhjGhhubh)}(hFor header_proc there can be used the default function :c:func:`debug_dflt_header_fn()` which is defined in debug.h. and which produces the same header output as the predefined views. E.g::h](h7For header_proc there can be used the default function }(hj`HhhhNhNubh)}(h :c:func:`debug_dflt_header_fn()`h]j)}(hjjHh]hdebug_dflt_header_fn()}(hjlHhhhNhNubah}(h]h ](jjc-funceh"]h$]h&]uh1jhjhHubah}(h]h ]h"]h$]h&]refdocj refdomainjreftypefunc refexplicitrefwarnjj#Fjdebug_dflt_header_fnuh1hhhhMhj`Hubhe which is defined in debug.h. and which produces the same header output as the predefined views. E.g:}(hj`HhhhNhNubeh}(h]h ]h"]h$]h&]uh1hhhhMhjGhhubjP)}(h$00 00964419409:440761 2 - 00 88023ech]h$00 00964419409:440761 2 - 00 88023ec}hjHsbah}(h]h ]h"]h$]h&]j_j`uh1jOhhhMhjGhhubh)}(h`In order to see how to use the callback functions check the implementation of the default views!h]h`In order to see how to use the callback functions check the implementation of the default views!}(hjHhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhMhjGhhubh)}(hExample:h]hExample:}(hjHhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhMhjGhhubjP)}(hX#include #define UNKNOWNSTR "data: %08x" const char* messages[] = {"This error...........\n", "That error...........\n", "Problem..............\n", "Something went wrong.\n", "Everything ok........\n", NULL }; static int debug_test_format_fn( debug_info_t *id, struct debug_view *view, char *out_buf, const char *in_buf ) { int i, rc = 0; if (id->buf_size >= 4) { int msg_nr = *((int*)in_buf); if (msg_nr < sizeof(messages) / sizeof(char*) - 1) rc += sprintf(out_buf, "%s", messages[msg_nr]); else rc += sprintf(out_buf, UNKNOWNSTR, msg_nr); } return rc; } struct debug_view debug_test_view = { "myview", /* name of view */ NULL, /* no prolog */ &debug_dflt_header_fn, /* default header for each entry */ &debug_test_format_fn, /* our own format function */ NULL, /* no input function */ NULL /* no private data */ };h]hX#include #define UNKNOWNSTR "data: %08x" const char* messages[] = {"This error...........\n", "That error...........\n", "Problem..............\n", "Something went wrong.\n", "Everything ok........\n", NULL }; static int debug_test_format_fn( debug_info_t *id, struct debug_view *view, char *out_buf, const char *in_buf ) { int i, rc = 0; if (id->buf_size >= 4) { int msg_nr = *((int*)in_buf); if (msg_nr < sizeof(messages) / sizeof(char*) - 1) rc += sprintf(out_buf, "%s", messages[msg_nr]); else rc += sprintf(out_buf, UNKNOWNSTR, msg_nr); } return rc; } struct debug_view debug_test_view = { "myview", /* name of view */ NULL, /* no prolog */ &debug_dflt_header_fn, /* default header for each entry */ &debug_test_format_fn, /* our own format function */ NULL, /* no input function */ NULL /* no private data */ };}hjHsbah}(h]h ]h"]h$]h&]j_j`jZCj[Cjj\C}uh1jOhhhMhjGhhubh)}(hhh](h)}(htest:h]htest:}(hjHhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjHhhhhhMubjP)}(hdebug_info_t *debug_info; int i; ... debug_info = debug_register("test", 0, 4, 4); debug_register_view(debug_info, &debug_test_view); for (i = 0; i < 10; i ++) debug_int_event(debug_info, 1, i);h]hdebug_info_t *debug_info; int i; ... debug_info = debug_register("test", 0, 4, 4); debug_register_view(debug_info, &debug_test_view); for (i = 0; i < 10; i ++) debug_int_event(debug_info, 1, i);}hjHsbah}(h]h ]h"]h$]h&]j_j`jZCj[Cjj\C}uh1jOhhhMhjHhhubjP)}(hXj> cat /sys/kernel/debug/s390dbf/test/myview 00 00964419734:611402 1 - 00 88042ca This error........... 00 00964419734:611405 1 - 00 88042ca That error........... 00 00964419734:611408 1 - 00 88042ca Problem.............. 00 00964419734:611411 1 - 00 88042ca Something went wrong. 00 00964419734:611414 1 - 00 88042ca Everything ok........ 00 00964419734:611417 1 - 00 88042ca data: 00000005 00 00964419734:611419 1 - 00 88042ca data: 00000006 00 00964419734:611422 1 - 00 88042ca data: 00000007 00 00964419734:611425 1 - 00 88042ca data: 00000008 00 00964419734:611428 1 - 00 88042ca data: 00000009h]hXj> cat /sys/kernel/debug/s390dbf/test/myview 00 00964419734:611402 1 - 00 88042ca This error........... 00 00964419734:611405 1 - 00 88042ca That error........... 00 00964419734:611408 1 - 00 88042ca Problem.............. 00 00964419734:611411 1 - 00 88042ca Something went wrong. 00 00964419734:611414 1 - 00 88042ca Everything ok........ 00 00964419734:611417 1 - 00 88042ca data: 00000005 00 00964419734:611419 1 - 00 88042ca data: 00000006 00 00964419734:611422 1 - 00 88042ca data: 00000007 00 00964419734:611425 1 - 00 88042ca data: 00000008 00 00964419734:611428 1 - 00 88042ca data: 00000009}hjHsbah}(h]h ]h"]h$]h&]j_j`uh1jOhhhMhjHhhubeh}(h]testah ]h"]test:ah$]h&]uh1hhjGhhhhhMubeh}(h]defining-viewsah ]h"]defining viewsah$]h&]uh1hhhhhhhhMVubeh}(h]s390-debug-featureah ]h"]s390 debug featureah$]h&]uh1hhhhhhhhKubeh}(h]h ]h"]h$]h&]sourcehuh1hcurrent_sourceN current_lineNsettingsdocutils.frontendValues)}(hN generatorN datestampN source_linkN source_urlN toc_backlinksentryfootnote_backlinksK sectnum_xformKstrip_commentsNstrip_elements_with_classesN strip_classesN report_levelK halt_levelKexit_status_levelKdebugNwarning_streamN tracebackinput_encoding utf-8-siginput_encoding_error_handlerstrictoutput_encodingutf-8output_encoding_error_handlerj3Ierror_encodingutf-8error_encoding_error_handlerbackslashreplace language_codeenrecord_dependenciesNconfigN id_prefixhauto_id_prefixid dump_settingsNdump_internalsNdump_transformsNdump_pseudo_xmlNexpose_internalsNstrict_visitorN_disable_configN_sourceh _destinationN _config_files]7/var/lib/git/docbuild/linux/Documentation/docutils.confafile_insertion_enabled raw_enabledKline_length_limitM'pep_referencesN pep_base_urlhttps://peps.python.org/pep_file_url_templatepep-%04drfc_referencesN rfc_base_url&https://datatracker.ietf.org/doc/html/ tab_widthKtrim_footnote_reference_spacesyntax_highlightlong smart_quotessmartquotes_locales]character_level_inline_markupdoctitle_xform docinfo_xformKsectsubtitle_xform image_loadinglinkembed_stylesheetcloak_email_addressessection_self_linkenvNubreporterNindirect_targets]substitution_defs}substitution_names}refnames}refids}nameids}(j Ij Ijijfj jj8Cj5CjcCj`CjCjCjCjCj DjDjDjDjEjDj~Ej{EjEjEj6Fj3FjGjGjIjIjHjHu nametypes}(j Ijij j8CjcCjCjCj DjDjEj~EjEj6FjGjIjHuh}(j Ihjfj)jjlj5Cj j-j6jjjjj' j, jV j[ j3j8jjj'j,jjj,j1j jjkjpjjj"j "j?$jD$j2&j7&jG)jL)j+j,j.j.ju1jz1j3j3j6j6jU9jZ9j <j<j>j>j@j@j`Cj;CjCjfCjCjCjDjCjDj#DjDjDj{EjEjEjEj3FjEjGj9FjIjGjHjHu footnote_refs} citation_refs} autofootnotes]autofootnote_refs]symbol_footnotes]symbol_footnote_refs] footnotes] citations]autofootnote_startKsymbol_footnote_startK id_counter collectionsCounter}jAIKsRparse_messages]transform_messages] transformerN include_log] decorationNhhub.