[PATCH v2 5/6] powerpc/smp: Add read_mostly attribute
From: Srikar Dronamraju <hidden>
Date: 2023-10-18 16:41:54
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
There are some variables that are only updated at boot time. So add read_mostly attribute to such variables Signed-off-by: Srikar Dronamraju <redacted> --- arch/powerpc/kernel/smp.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 29da9262cb17..b1eb11a66902 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c@@ -77,10 +77,10 @@ static DEFINE_PER_CPU(int, cpu_state) = { 0 }; #endif struct task_struct *secondary_current; -bool has_big_cores; -bool coregroup_enabled; -bool thread_group_shares_l2; -bool thread_group_shares_l3; +bool has_big_cores __read_mostly; +bool coregroup_enabled __read_mostly; +bool thread_group_shares_l2 __read_mostly; +bool thread_group_shares_l3 __read_mostly; DEFINE_PER_CPU(cpumask_var_t, cpu_sibling_map); DEFINE_PER_CPU(cpumask_var_t, cpu_smallcore_map);
@@ -987,7 +987,7 @@ static int __init init_thread_group_cache_map(int cpu, int cache_property) return 0; } -static bool shared_caches; +static bool shared_caches __read_mostly; DEFINE_STATIC_KEY_FALSE(powerpc_asym_packing); #ifdef CONFIG_SCHED_SMT
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2.31.1