diff options
| author | Juergen Gross <jgross@suse.com> | 2022-11-02 10:47:11 +0300 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2022-11-10 15:12:45 +0300 |
| commit | 30f89e524becdbaa483b34902b079c9d4dfaa4a3 (patch) | |
| tree | 298cfde91b69aa719bf292b211d4a7fe6718f970 /include/linux/cpuhotplug.h | |
| parent | adfe7512e1d0b2e83215b0ec56337d2df9f1032d (diff) | |
| download | linux-30f89e524becdbaa483b34902b079c9d4dfaa4a3.tar.xz | |
x86/cacheinfo: Switch cache_ap_init() to hotplug callback
Instead of explicitly calling cache_ap_init() in
identify_secondary_cpu() use a CPU hotplug callback instead. By
registering the callback only after having started the non-boot CPUs
and initializing cache_aps_delayed_init with "true", calling
set_cache_aps_delayed_init() at boot time can be dropped.
It should be noted that this change results in cache_ap_init() being
called a little bit later when hotplugging CPUs. By using a new
hotplug slot right at the start of the low level bringup this is not
problematic, as no operations requiring a specific caching mode are
performed that early in CPU initialization.
Suggested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20221102074713.21493-15-jgross@suse.com
Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'include/linux/cpuhotplug.h')
| -rw-r--r-- | include/linux/cpuhotplug.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h index f61447913db9..0d277b4b025a 100644 --- a/include/linux/cpuhotplug.h +++ b/include/linux/cpuhotplug.h @@ -140,6 +140,7 @@ enum cpuhp_state { */ CPUHP_AP_IDLE_DEAD, CPUHP_AP_OFFLINE, + CPUHP_AP_CACHECTRL_STARTING, CPUHP_AP_SCHED_STARTING, CPUHP_AP_RCUTREE_DYING, CPUHP_AP_CPU_PM_STARTING, |