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| author | James Morse <james.morse@arm.com> | 2024-02-13 21:44:36 +0300 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2024-02-16 21:18:33 +0300 |
| commit | 258c91e84fedc789353a35ad91d827a9111d3cbd (patch) | |
| tree | 8436190af8021e0d31007996fdd20845d0566e54 /include/linux/resctrl.h | |
| parent | 978fcca954cb52249babbc14e53de53c88dd6433 (diff) | |
| download | linux-258c91e84fedc789353a35ad91d827a9111d3cbd.tar.xz | |
x86/resctrl: Add CPU offline callback for resctrl work
The resctrl architecture specific code may need to free a domain when a CPU
goes offline, it also needs to reset the CPUs PQR_ASSOC register. Amongst
other things, the resctrl filesystem code needs to clear this CPU from the
cpu_mask of any control and monitor groups.
Currently, this is all done in core.c and called from resctrl_offline_cpu(),
making the split between architecture and filesystem code unclear.
Move the filesystem work to remove the CPU from the control and monitor groups
into a filesystem helper called resctrl_offline_cpu(), and rename the one in
core.c resctrl_arch_offline_cpu().
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Shaopeng Tan <tan.shaopeng@fujitsu.com>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Reviewed-by: Babu Moger <babu.moger@amd.com>
Tested-by: Shaopeng Tan <tan.shaopeng@fujitsu.com>
Tested-by: Peter Newman <peternewman@google.com>
Tested-by: Babu Moger <babu.moger@amd.com>
Tested-by: Carl Worth <carl@os.amperecomputing.com> # arm64
Link: https://lore.kernel.org/r/20240213184438.16675-23-james.morse@arm.com
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Diffstat (limited to 'include/linux/resctrl.h')
| -rw-r--r-- | include/linux/resctrl.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/resctrl.h b/include/linux/resctrl.h index ccbbbe5d18d3..270ff1d5c051 100644 --- a/include/linux/resctrl.h +++ b/include/linux/resctrl.h @@ -226,6 +226,7 @@ u32 resctrl_arch_get_config(struct rdt_resource *r, struct rdt_domain *d, int resctrl_online_domain(struct rdt_resource *r, struct rdt_domain *d); void resctrl_offline_domain(struct rdt_resource *r, struct rdt_domain *d); void resctrl_online_cpu(unsigned int cpu); +void resctrl_offline_cpu(unsigned int cpu); /** * resctrl_arch_rmid_read() - Read the eventid counter corresponding to rmid |