diff options
| author | Len Brown <len.brown@intel.com> | 2004-12-01 08:25:01 -0500 |
|---|---|---|
| committer | Len Brown <lenb@dhcppc3.> | 2004-12-01 08:25:01 -0500 |
| commit | 211001b963eba0d1e79826b00fc51316220653e6 (patch) | |
| tree | 61de4cbf914b71a4a614e608ade33e1eb999833e /Documentation | |
| parent | 0e3448746fcaaaeb8ea5061efa89d750d7403fbb (diff) | |
| download | history-211001b963eba0d1e79826b00fc51316220653e6.tar.gz | |
[ACPI] update C-state limiting patch
Now "max_cstate=" instead of "acpi_cstate_limit="
Delete redundant static cstate flags .c2 and .c3
http://bugme.osdl.org/show_bug.cgi?id=3549
For static processor driver, boot cmdline:
processor.max_cstate=2
For processor module, /etc/modprobe.conf:
options processor max_cstate=2
or
# modprobe processor max_cstate=2
From kernel or kernel module:
#include <linux/acpi.h>
acpi_set_cstate_limit(2);
Suggested-by: Pavel Machek
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index c311746b8956c1..4013d55387c828 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -960,10 +960,9 @@ running once the system is up. (param: profile step/bucket size as a power of 2 for statistical time based profiling) - processor.c2= [HW, ACPI] - processor.c3= [HW, ACPI] - 0 - disable C2 or C3 idle power saving state. - 1 - enable C2 or C3 (default unless DMI blacklist entry) + processor.max_cstate= [HW, ACPI] + Limit processor to maximum C-state + max_cstate=9 overrides any DMI blacklist limit. prompt_ramdisk= [RAM] List of RAM disks to prompt for floppy disk before loading. |