smp: Get this_cpu once in smp_call_function

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smp_call_function_single() and smp_call_function_many_cond() disable
preemption and cache the CPU number via get_cpu().

Use this cached value throughout the function instead of invoking
smp_processor_id() again.

[ tglx: Make the copy&pasta'ed change log match the patch ]

Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Reviewed-by: Mukesh Kumar Chaurasiya (IBM) <mkchauras@gmail.com>
Link: https://patch.msgid.link/20260323193630.640311-4-sshegde@linux.ibm.com

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Shrikanth Hegde 2026-03-24 01:06:29 +05:30 • committed by Thomas Gleixner

parent cc5623947f

commit ec39780d6a

1 changed files with 2 additions and 2 deletions

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kernel/smp.c

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