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| author | Babu Moger <babu.moger@amd.com> | 2025-09-05 16:34:14 -0500 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2025-09-15 12:18:31 +0200 |
| commit | ebebda853633de389ba2c6737f8ca38405713e90 (patch) | |
| tree | 0bdaaa25c0b3e50ece7b8004fd516b4c6b17c723 | |
| parent | x86/resctrl: Add data structures and definitions for ABMC assignment (diff) | |
| download | linux-ebebda853633de389ba2c6737f8ca38405713e90.tar.gz linux-ebebda853633de389ba2c6737f8ca38405713e90.zip | |
fs/resctrl: Introduce event configuration field in struct mon_evt
When supported, mbm_event counter assignment mode allows the user to configure
events to track specific types of memory transactions.
Introduce an evt_cfg field in struct mon_evt to define the type of memory
transactions tracked by a monitoring event. Also add a helper function to get
the evt_cfg value.
Signed-off-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/cover.1757108044.git.babu.moger@amd.com
| -rw-r--r-- | fs/resctrl/internal.h | 5 | ||||
| -rw-r--r-- | fs/resctrl/monitor.c | 10 | ||||
| -rw-r--r-- | include/linux/resctrl.h | 2 |
3 files changed, 17 insertions, 0 deletions
diff --git a/fs/resctrl/internal.h b/fs/resctrl/internal.h index 4f372e80bf37..1cddfff007a2 100644 --- a/fs/resctrl/internal.h +++ b/fs/resctrl/internal.h @@ -56,6 +56,10 @@ static inline struct rdt_fs_context *rdt_fc2context(struct fs_context *fc) * @evtid: event id * @rid: resource id for this event * @name: name of the event + * @evt_cfg: Event configuration value that represents the + * memory transactions (e.g., READS_TO_LOCAL_MEM, + * READS_TO_REMOTE_MEM) being tracked by @evtid. + * Only valid if @evtid is an MBM event. * @configurable: true if the event is configurable * @enabled: true if the event is enabled */ @@ -63,6 +67,7 @@ struct mon_evt { enum resctrl_event_id evtid; enum resctrl_res_level rid; char *name; + u32 evt_cfg; bool configurable; bool enabled; }; diff --git a/fs/resctrl/monitor.c b/fs/resctrl/monitor.c index 1fa82a62b2e5..f714e7baaea6 100644 --- a/fs/resctrl/monitor.c +++ b/fs/resctrl/monitor.c @@ -882,6 +882,11 @@ bool resctrl_is_mon_event_enabled(enum resctrl_event_id eventid) mon_event_all[eventid].enabled; } +u32 resctrl_get_mon_evt_cfg(enum resctrl_event_id evtid) +{ + return mon_event_all[evtid].evt_cfg; +} + int resctrl_mbm_assign_mode_show(struct kernfs_open_file *of, struct seq_file *s, void *v) { @@ -1023,6 +1028,11 @@ int resctrl_mon_resource_init(void) resctrl_enable_mon_event(QOS_L3_MBM_TOTAL_EVENT_ID); if (!resctrl_is_mon_event_enabled(QOS_L3_MBM_LOCAL_EVENT_ID)) resctrl_enable_mon_event(QOS_L3_MBM_LOCAL_EVENT_ID); + mon_event_all[QOS_L3_MBM_TOTAL_EVENT_ID].evt_cfg = r->mon.mbm_cfg_mask; + mon_event_all[QOS_L3_MBM_LOCAL_EVENT_ID].evt_cfg = r->mon.mbm_cfg_mask & + (READS_TO_LOCAL_MEM | + READS_TO_LOCAL_S_MEM | + NON_TEMP_WRITE_TO_LOCAL_MEM); resctrl_file_fflags_init("num_mbm_cntrs", RFTYPE_MON_INFO | RFTYPE_RES_CACHE); resctrl_file_fflags_init("available_mbm_cntrs", diff --git a/include/linux/resctrl.h b/include/linux/resctrl.h index e013caba6641..87daa4ca312d 100644 --- a/include/linux/resctrl.h +++ b/include/linux/resctrl.h @@ -409,6 +409,8 @@ static inline bool resctrl_is_mbm_event(enum resctrl_event_id eventid) eventid <= QOS_L3_MBM_LOCAL_EVENT_ID); } +u32 resctrl_get_mon_evt_cfg(enum resctrl_event_id eventid); + /* Iterate over all memory bandwidth events */ #define for_each_mbm_event_id(eventid) \ for (eventid = QOS_L3_MBM_TOTAL_EVENT_ID; \ |