diff options
| author | Tony Luck <tony.luck@intel.com> | 2025-12-17 09:20:58 -0800 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2026-01-05 15:38:07 +0100 |
| commit | ab0308aee3819a3eccde42f9eb5bb01d6733be38 (patch) | |
| tree | b21ee291be107584f6dc685c9c3ed5ba4f0f2912 /include/linux | |
| parent | dd110880e80d35ad07e460e7a8da007c8058e7bf (diff) | |
x86,fs/resctrl: Handle events that can be read from any CPU
resctrl assumes that monitor events can only be read from a CPU in the
cpumask_t set of each domain. This is true for x86 events accessed with an
MSR interface, but may not be true for other access methods such as MMIO.
Introduce and use flag mon_evt::any_cpu, settable by architecture, that
indicates there are no restrictions on which CPU can read that event. This
flag is not supported by the L3 event reading that requires to be run on a CPU
that belongs to the L3 domain of the event being read.
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/20251217172121.12030-1-tony.luck@intel.com
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/resctrl.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/resctrl.h b/include/linux/resctrl.h index 79aaaabcdd3f..22c5d07fe9ff 100644 --- a/include/linux/resctrl.h +++ b/include/linux/resctrl.h @@ -412,7 +412,7 @@ u32 resctrl_arch_get_num_closid(struct rdt_resource *r); u32 resctrl_arch_system_num_rmid_idx(void); int resctrl_arch_update_domains(struct rdt_resource *r, u32 closid); -void resctrl_enable_mon_event(enum resctrl_event_id eventid); +void resctrl_enable_mon_event(enum resctrl_event_id eventid, bool any_cpu); bool resctrl_is_mon_event_enabled(enum resctrl_event_id eventid); |