[PATCH v2 3/6] powerpc/smp: Move shared_processor static key to smp.h
From: Srikar Dronamraju <hidden>
Date: 2023-10-18 16:40:38
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), paravirt_ops interface, the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Juergen Gross, Linus Torvalds
The ability to detect if the system is running in a shared processor mode is helpful in few more generic cases not just in paravirtualization. For example: At boot time, different scheduler/ topology flags may be set based on the processor mode. Hence move it to a more generic file. Signed-off-by: Srikar Dronamraju <redacted> --- arch/powerpc/include/asm/paravirt.h | 12 ------------ arch/powerpc/include/asm/smp.h | 14 ++++++++++++++ 2 files changed, 14 insertions(+), 12 deletions(-)
diff --git a/arch/powerpc/include/asm/paravirt.h b/arch/powerpc/include/asm/paravirt.h
index 0372b0093f72..cf83e837a571 100644
--- a/arch/powerpc/include/asm/paravirt.h
+++ b/arch/powerpc/include/asm/paravirt.h@@ -15,13 +15,6 @@ #include <asm/kvm_guest.h> #include <asm/cputhreads.h> -DECLARE_STATIC_KEY_FALSE(shared_processor); - -static inline bool is_shared_processor(void) -{ - return static_branch_unlikely(&shared_processor); -} - #ifdef CONFIG_PARAVIRT_TIME_ACCOUNTING extern struct static_key paravirt_steal_enabled; extern struct static_key paravirt_steal_rq_enabled;
@@ -77,11 +70,6 @@ static inline bool is_vcpu_idle(int vcpu) return lppaca_of(vcpu).idle; } #else -static inline bool is_shared_processor(void) -{ - return false; -} - static inline u32 yield_count_of(int cpu) { return 0;
diff --git a/arch/powerpc/include/asm/smp.h b/arch/powerpc/include/asm/smp.h
index aaaa576d0e15..08631b2a4528 100644
--- a/arch/powerpc/include/asm/smp.h
+++ b/arch/powerpc/include/asm/smp.h@@ -34,6 +34,20 @@ extern bool coregroup_enabled; extern int cpu_to_chip_id(int cpu); extern int *chip_id_lookup_table; +#ifdef CONFIG_PPC_SPLPAR +DECLARE_STATIC_KEY_FALSE(shared_processor); + +static inline bool is_shared_processor(void) +{ + return static_branch_unlikely(&shared_processor); +} +#else +static inline bool is_shared_processor(void) +{ + return false; +} +#endif + DECLARE_PER_CPU(cpumask_var_t, thread_group_l1_cache_map); DECLARE_PER_CPU(cpumask_var_t, thread_group_l2_cache_map); DECLARE_PER_CPU(cpumask_var_t, thread_group_l3_cache_map);
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2.31.1