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x86/smp: Move this_cpu_off to percpu hot section 

No functional change.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Uros Bizjak <ubizjak@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250303165246.2175811-12-brgerst@gmail.com
This commit is contained in:
Brian Gerst 2025-03-03 11:52:46 -05:00 committed by Ingo Molnar
parent f3856cd343
commit 06aa03056f
2 changed files with 2 additions and 2 deletions
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2
arch/x86/include/asm/percpu.h
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@ -586,7 +586,7 @@ do { \
#include <asm-generic/percpu.h> #include <asm-generic/percpu.h>
/* We can use this directly for local CPU (faster). */ /* We can use this directly for local CPU (faster). */
DECLARE_PER_CPU_READ_MOSTLY(unsigned long, this_cpu_off); DECLARE_PER_CPU_CACHE_HOT(unsigned long, this_cpu_off);
#endif /* !__ASSEMBLY__ */ #endif /* !__ASSEMBLY__ */

2
arch/x86/kernel/setup_percpu.c
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@ -26,7 +26,7 @@
DEFINE_PER_CPU_CACHE_HOT(int, cpu_number); DEFINE_PER_CPU_CACHE_HOT(int, cpu_number);
EXPORT_PER_CPU_SYMBOL(cpu_number); EXPORT_PER_CPU_SYMBOL(cpu_number);
DEFINE_PER_CPU_READ_MOSTLY(unsigned long, this_cpu_off); DEFINE_PER_CPU_CACHE_HOT(unsigned long, this_cpu_off);
EXPORT_PER_CPU_SYMBOL(this_cpu_off); EXPORT_PER_CPU_SYMBOL(this_cpu_off);
unsigned long __per_cpu_offset[NR_CPUS] __ro_after_init; unsigned long __per_cpu_offset[NR_CPUS] __ro_after_init;