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x86/resctrl: Introduce resctrl_file_fflags_init() to initialize fflags

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thread_throttle_mode_init() and mbm_config_rftype_init() both initialize
fflags for resctrl files.

Adding new files will involve adding another function to initialize
the fflags. This can be simplified by adding a new function
resctrl_file_fflags_init() and passing the file name and flags
to be initialized.

Consolidate fflags initialization into resctrl_file_fflags_init() and
remove thread_throttle_mode_init() and mbm_config_rftype_init().

  [ Tony: Drop __init attribute so resctrl_file_fflags_init() can be used at
    run time. ]

Signed-off-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/r/20241206163148.83828-2-tony.luck@intel.com
This commit is contained in:
Babu Moger 2024-12-06 08:31:41 -08:00 committed by Borislav Petkov (AMD)
parent 135eef38d7
commit 2937f9c361
4 changed files with 10 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/kernel/cpu/resctrl/core.c
View File

@ -234,7 +234,9 @@ static __init bool __get_mem_config_intel(struct rdt_resource *r)
r->membw.throttle_mode = THREAD_THROTTLE_PER_THREAD;
else
r->membw.throttle_mode = THREAD_THROTTLE_MAX;
thread_throttle_mode_init();
resctrl_file_fflags_init("thread_throttle_mode",
RFTYPE_CTRL_INFO | RFTYPE_RES_MB);
r->alloc_capable = true;

3
arch/x86/kernel/cpu/resctrl/internal.h
View File

@ -647,8 +647,7 @@ void cqm_handle_limbo(struct work_struct *work);
bool has_busy_rmid(struct rdt_mon_domain *d);
void __check_limbo(struct rdt_mon_domain *d, bool force_free);
void rdt_domain_reconfigure_cdp(struct rdt_resource *r);
void __init thread_throttle_mode_init(void);
void __init mbm_config_rftype_init(const char *config);
void resctrl_file_fflags_init(const char *config, unsigned long fflags);
void rdt_staged_configs_clear(void);
bool closid_allocated(unsigned int closid);
int resctrl_find_cleanest_closid(void);

6
arch/x86/kernel/cpu/resctrl/monitor.c
View File

@ -1224,11 +1224,13 @@ int __init rdt_get_mon_l3_config(struct rdt_resource *r)
if (rdt_cpu_has(X86_FEATURE_CQM_MBM_TOTAL)) {
mbm_total_event.configurable = true;
mbm_config_rftype_init("mbm_total_bytes_config");
resctrl_file_fflags_init("mbm_total_bytes_config",
RFTYPE_MON_INFO | RFTYPE_RES_CACHE);
}
if (rdt_cpu_has(X86_FEATURE_CQM_MBM_LOCAL)) {
mbm_local_event.configurable = true;
mbm_config_rftype_init("mbm_local_bytes_config");
resctrl_file_fflags_init("mbm_local_bytes_config",
RFTYPE_MON_INFO | RFTYPE_RES_CACHE);
}
}

15
arch/x86/kernel/cpu/resctrl/rdtgroup.c
View File

@ -2020,24 +2020,13 @@ static struct rftype *rdtgroup_get_rftype_by_name(const char *name)
return NULL;
}
void __init thread_throttle_mode_init(void)
{
struct rftype *rft;
rft = rdtgroup_get_rftype_by_name("thread_throttle_mode");
if (!rft)
return;
rft->fflags = RFTYPE_CTRL_INFO | RFTYPE_RES_MB;
}
void __init mbm_config_rftype_init(const char *config)
void resctrl_file_fflags_init(const char *config, unsigned long fflags)
{
struct rftype *rft;
rft = rdtgroup_get_rftype_by_name(config);
if (rft)
rft->fflags = RFTYPE_MON_INFO | RFTYPE_RES_CACHE;
rft->fflags = fflags;
}
/**