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| author | Tony Luck <tony.luck@intel.com> | 2023-09-06 15:44:57 -0700 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2023-09-12 13:27:23 -0700 |
| commit | 58ab1450e4ed6c385cfc36cc46b6b282e9b6a558 (patch) | |
| tree | 2ec6318e1b0b38958af2e6521560480675b90ee4 | |
| parent | 5ff625811e6f91ddc82283afe404647895164000 (diff) | |
| download | linux-58ab1450e4ed6c385cfc36cc46b6b282e9b6a558.tar.gz | |
resctrl2: Add resource register()/unregister()
Export functions from core code so that modules can register and
unregister themcelves.
Signed-off-by: Tony Luck <tony.luck@intel.com>
| -rw-r--r-- | fs/resctrl2/Makefile | 1 | ||||
| -rw-r--r-- | fs/resctrl2/internal.h | 1 | ||||
| -rw-r--r-- | fs/resctrl2/resources.c | 32 | ||||
| -rw-r--r-- | include/linux/resctrl.h | 16 |
4 files changed, 50 insertions, 0 deletions
diff --git a/fs/resctrl2/Makefile b/fs/resctrl2/Makefile index 6d514173570de8..98d6c94f0aec43 100644 --- a/fs/resctrl2/Makefile +++ b/fs/resctrl2/Makefile @@ -5,6 +5,7 @@ ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=RESCTRL ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=RESCTRL obj-$(CONFIG_RESCTRL2_FS) += locking.o +obj-$(CONFIG_RESCTRL2_FS) += resources.o obj-$(CONFIG_RESCTRL2_FS) += root.o obj-$(CONFIG_X86_CPU_RESCTRL2) += arch/x86/ diff --git a/fs/resctrl2/internal.h b/fs/resctrl2/internal.h index a62228cb385148..c8a85d1668a8ee 100644 --- a/fs/resctrl2/internal.h +++ b/fs/resctrl2/internal.h @@ -3,6 +3,7 @@ #include <linux/cpu.h> #include <linux/kernfs.h> +#include <linux/resctrl.h> struct resctrl_node_info { struct kernfs_node *kn; diff --git a/fs/resctrl2/resources.c b/fs/resctrl2/resources.c new file mode 100644 index 00000000000000..d056d9a6d0312b --- /dev/null +++ b/fs/resctrl2/resources.c @@ -0,0 +1,32 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* Copyright(c) 2023 Intel Corporation. */ + +#include "internal.h" + +LIST_HEAD(resctrl_all_resources); + +int resctrl_register_resource(struct resctrl_resource *r) +{ + cpus_read_lock(); + mutex_lock(&resctrl_mutex); + + list_add(&r->list, &resctrl_all_resources); + + mutex_unlock(&resctrl_mutex); + cpus_read_unlock(); + + return 0; +} +EXPORT_SYMBOL_GPL(resctrl_register_resource); + +void resctrl_unregister_resource(struct resctrl_resource *r) +{ + cpus_read_lock(); + mutex_lock(&resctrl_mutex); + + list_del(&r->list); + + mutex_unlock(&resctrl_mutex); + cpus_read_unlock(); +} +EXPORT_SYMBOL_GPL(resctrl_unregister_resource); diff --git a/include/linux/resctrl.h b/include/linux/resctrl.h index 8334eeacfec525..1fd62fa1665cef 100644 --- a/include/linux/resctrl.h +++ b/include/linux/resctrl.h @@ -2,6 +2,8 @@ #ifndef _RESCTRL_H #define _RESCTRL_H +#ifdef CONFIG_X86_CPU_RESCTRL + #include <linux/kernel.h> #include <linux/list.h> #include <linux/pid.h> @@ -264,4 +266,18 @@ void resctrl_arch_reset_rmid_all(struct rdt_resource *r, struct rdt_domain *d); extern unsigned int resctrl_rmid_realloc_threshold; extern unsigned int resctrl_rmid_realloc_limit; +#endif /* CONFIG_X86_CPU_RESCTRL */ + +#ifdef CONFIG_RESCTRL2_FS + +struct resctrl_resource { + char *name; + struct list_head list; +}; + +int resctrl_register_resource(struct resctrl_resource *r); +void resctrl_unregister_resource(struct resctrl_resource *r); + +#endif /* CONFIG_RESCTRL2_FS */ + #endif /* _RESCTRL_H */ |