Commit-ID: 3bec6def39e32609e01a68b43476ee1f1c512eaa Gitweb: http://git.kernel.org/tip/3bec6def39e32609e01a68b43476ee1f1c512eaa Author: Thomas Gleixner <[email protected]> AuthorDate: Mon, 28 Aug 2017 08:47:24 +0200 Committer: Ingo Molnar <[email protected]> CommitDate: Tue, 29 Aug 2017 11:42:24 +0200
x86/apic: Use this_cpu_ptr() in local_timer_interrupt() Accessing the per cpu data via per_cpu(, smp_processor_id()) is pointless. Use this_cpu_ptr() instead. Signed-off-by: Thomas Gleixner <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Steven Rostedt <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]> --- arch/x86/kernel/apic/apic.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 7a57b54..a33fa44 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -988,8 +988,7 @@ void setup_secondary_APIC_clock(void) */ static void local_apic_timer_interrupt(void) { - int cpu = smp_processor_id(); - struct clock_event_device *evt = &per_cpu(lapic_events, cpu); + struct clock_event_device *evt = this_cpu_ptr(&lapic_events); /* * Normally we should not be here till LAPIC has been initialized but @@ -1003,7 +1002,8 @@ static void local_apic_timer_interrupt(void) * spurious. */ if (!evt->event_handler) { - pr_warning("Spurious LAPIC timer interrupt on cpu %d\n", cpu); + pr_warning("Spurious LAPIC timer interrupt on cpu %d\n", + smp_processor_id()); /* Switch it off */ lapic_timer_shutdown(evt); return;
