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| author |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2025-06-07 14:22:56 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2025-06-07 14:22:56 +0200 |
| commit | 4c529a4a7260776bb4abe264498857b4537aa70d (patch) | |
| tree | 535f7ad2e0d22ab89c652ebac3bc2a6e19e32265 /include/linux/cpu.h | |
| parent | intel_idle: Use subsys_initcall_sync() for initialization (diff) | |
| download | wireguard-linux-4c529a4a7260776bb4abe264498857b4537aa70d.tar.xz wireguard-linux-4c529a4a7260776bb4abe264498857b4537aa70d.zip | |
x86/smp: PM/hibernate: Split arch_resume_nosmt()
Move the inner part of the arch_resume_nosmt() code into a separate
function called arch_cpu_rescan_dead_smt_siblings(), so it can be
used in other places where "dead" SMT siblings may need to be taken
online and offline again in order to get into deep idle states.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Tested-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Link: https://patch.msgid.link/3361688.44csPzL39Z@rjwysocki.net
[ rjw: Prevent build issues with CONFIG_SMP unset ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/cpu.h')
| -rw-r--r-- | include/linux/cpu.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/cpu.h b/include/linux/cpu.h index e6089abc28e2..96a3a0d6a60e 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -120,6 +120,7 @@ extern void cpu_maps_update_begin(void); extern void cpu_maps_update_done(void); int bringup_hibernate_cpu(unsigned int sleep_cpu); void bringup_nonboot_cpus(unsigned int max_cpus); +int arch_cpu_rescan_dead_smt_siblings(void); #else /* CONFIG_SMP */ #define cpuhp_tasks_frozen 0 @@ -134,6 +135,8 @@ static inline void cpu_maps_update_done(void) static inline int add_cpu(unsigned int cpu) { return 0;} +static inline int arch_cpu_rescan_dead_smt_siblings(void) { return 0; } + #endif /* CONFIG_SMP */ extern const struct bus_type cpu_subsys; |