linux-kernel - [GIT PULL] percpu changes for v4.11-rc1

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Date:   Mon, 27 Feb 2017 15:03:57 -0500
From:   Tejun Heo <tj@...nel.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org
Subject: [GIT PULL] percpu changes for v4.11-rc1

Hello, Linus.

Contains just one minor cleanup patch which gets rid of an unnecessary
irqsave/restore in the cpu dead callback.

Thanks.

The following changes since commit 44b4b461a0fb407507b46ea76a71376d74de7058:

  Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc (2017-01-19 16:40:03 -0800)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu.git for-4.11

for you to fetch changes up to aaf0f2fa682861e47a4f6a8762d2b8a9a4a51077:

  percpu_counter: percpu_counter_hotcpu_callback() cleanup (2017-01-20 10:06:56 -0500)

----------------------------------------------------------------
Eric Dumazet (1):
      percpu_counter: percpu_counter_hotcpu_callback() cleanup

 lib/percpu_counter.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/lib/percpu_counter.c b/lib/percpu_counter.c
index c8cebb1..9c21000 100644
--- a/lib/percpu_counter.c
+++ b/lib/percpu_counter.c
@@ -176,13 +176,12 @@ static int percpu_counter_cpu_dead(unsigned int cpu)
 	spin_lock_irq(&percpu_counters_lock);
 	list_for_each_entry(fbc, &percpu_counters, list) {
 		s32 *pcount;
-		unsigned long flags;
 
-		raw_spin_lock_irqsave(&fbc->lock, flags);
+		raw_spin_lock(&fbc->lock);
 		pcount = per_cpu_ptr(fbc->counters, cpu);
 		fbc->count += *pcount;
 		*pcount = 0;
-		raw_spin_unlock_irqrestore(&fbc->lock, flags);
+		raw_spin_unlock(&fbc->lock);
 	}
 	spin_unlock_irq(&percpu_counters_lock);
 #endif

-- 
tejun