diff options
| author |   James Morse <james.morse@arm.com> | 2024-02-13 18:44:34 +0000 |
|---|---|---|
| committer |   Borislav Petkov (AMD) <bp@alien8.de> | 2024-02-16 19:18:33 +0100 |
| commit | 1b3e50ce7f5001f1e0edaf7d6abea43b264db7ee (patch) | |
| tree | b1a70707707c3749219b3ca43376ab76d1d72ae1 /include/linux/resctrl.h | |
| parent | x86/resctrl: Add helpers for system wide mon/alloc capable (diff) | |
| download | wireguard-linux-1b3e50ce7f5001f1e0edaf7d6abea43b264db7ee.tar.xz wireguard-linux-1b3e50ce7f5001f1e0edaf7d6abea43b264db7ee.zip | |
x86/resctrl: Add CPU online callback for resctrl work
The resctrl architecture specific code may need to create a domain when a CPU
comes online, it also needs to reset the CPUs PQR_ASSOC register. The resctrl
filesystem code needs to update the rdtgroup_default CPU mask when CPUs are
brought online.
Currently, this is all done in one function, resctrl_online_cpu(). It will
need to be split into architecture and filesystem parts before resctrl can be
moved to /fs/.
Pull the rdtgroup_default update work out as a filesystem specific cpu_online
helper. resctrl_online_cpu() is the obvious name for this, which means the
version in core.c needs renaming.
resctrl_online_cpu() is called by the arch code once it has done the work to
add the new CPU to any domains.
In future patches, resctrl_online_cpu() will take the rdtgroup_mutex itself.
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/20240213184438.16675-21-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 bf460c912bf5..4c4bad3c34e4 100644 --- a/include/linux/resctrl.h +++ b/include/linux/resctrl.h @@ -223,6 +223,7 @@ u32 resctrl_arch_get_config(struct rdt_resource *r, struct rdt_domain *d, u32 closid, enum resctrl_conf_type type); 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); /** * resctrl_arch_rmid_read() - Read the eventid counter corresponding to rmid |