diff options
| author | Babu Moger <babu.moger@amd.com> | 2023-01-13 09:20:34 -0600 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2023-01-23 17:40:21 +0100 |
| commit | d507f83ced55eda848a3f397cf87b07ab11384b9 (patch) | |
| tree | cb752dd83a08c50294cdb25df6a10b3349cffab7 /arch/x86/kernel/cpu/resctrl/rdtgroup.c | |
| parent | bd334c86b5d70e5d1c6169991802e62c828d6f38 (diff) | |
x86/resctrl: Support monitor configuration
Add a new field in struct mon_evt to support Bandwidth Monitoring Event
Configuration (BMEC) and also update the "mon_features" display.
The resctrl file "mon_features" will display the supported events
and files that can be used to configure those events if monitor
configuration is supported.
Before the change:
$ cat /sys/fs/resctrl/info/L3_MON/mon_features
llc_occupancy
mbm_total_bytes
mbm_local_bytes
After the change when BMEC is supported:
$ cat /sys/fs/resctrl/info/L3_MON/mon_features
llc_occupancy
mbm_total_bytes
mbm_total_bytes_config
mbm_local_bytes
mbm_local_bytes_config
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/r/20230113152039.770054-9-babu.moger@amd.com
Diffstat (limited to 'arch/x86/kernel/cpu/resctrl/rdtgroup.c')
| -rw-r--r-- | arch/x86/kernel/cpu/resctrl/rdtgroup.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c index 75169680516b..bf0bd4378e13 100644 --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c @@ -998,8 +998,11 @@ static int rdt_mon_features_show(struct kernfs_open_file *of, struct rdt_resource *r = of->kn->parent->priv; struct mon_evt *mevt; - list_for_each_entry(mevt, &r->evt_list, list) + list_for_each_entry(mevt, &r->evt_list, list) { seq_printf(seq, "%s\n", mevt->name); + if (mevt->configurable) + seq_printf(seq, "%s_config\n", mevt->name); + } return 0; } |