Commit-ID: 553bf6bbfd8a540c70aee28eb50e24caff456a03 Gitweb: http://git.kernel.org/tip/553bf6bbfd8a540c70aee28eb50e24caff456a03 Author: Rik van Riel <r...@redhat.com> AuthorDate: Wed, 13 Jul 2016 16:50:05 +0200 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Thu, 14 Jul 2016 10:42:35 +0200
sched/cputime: Drop local_irq_save/restore from irqtime_account_irq() Paolo pointed out that irqs are already blocked when irqtime_account_irq() is called. That means there is no reason to call local_irq_save/restore() again. Suggested-by: Paolo Bonzini <pbonz...@redhat.com> Signed-off-by: Rik van Riel <r...@redhat.com> Signed-off-by: Frederic Weisbecker <fweis...@gmail.com> Reviewed-by: Paolo Bonzini <pbonz...@redhat.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Mike Galbraith <efa...@gmx.de> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Radim Krcmar <rkrc...@redhat.com> Cc: Thomas Gleixner <t...@linutronix.de> Cc: Wanpeng Li <wanpeng...@hotmail.com> Link: http://lkml.kernel.org/r/1468421405-20056-6-git-send-email-fweis...@gmail.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- kernel/sched/cputime.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index 16a873c..ea0f6f3 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -49,15 +49,12 @@ DEFINE_PER_CPU(seqcount_t, irq_time_seq); */ void irqtime_account_irq(struct task_struct *curr) { - unsigned long flags; s64 delta; int cpu; if (!sched_clock_irqtime) return; - local_irq_save(flags); - cpu = smp_processor_id(); delta = sched_clock_cpu(cpu) - __this_cpu_read(irq_start_time); __this_cpu_add(irq_start_time, delta); @@ -75,7 +72,6 @@ void irqtime_account_irq(struct task_struct *curr) __this_cpu_add(cpu_softirq_time, delta); irq_time_write_end(); - local_irq_restore(flags); } EXPORT_SYMBOL_GPL(irqtime_account_irq);
