[PATCH] percpu_counter: percpu_counter_hotcpu_callback() cleanup

[Eric Dumazet]

From: Eric Dumazet <edumazet@xxxxxxxxxx>

In commit ebd8fef304f9 ("percpu_counter: make percpu_counters_lock
irq-safe") we disabled irqs in percpu_counter_hotcpu_callback()

We can grab every counter spinlock without having to disable
irqs again.

Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
---
 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 c8cebb1370765fac92170cd0d2f8ed1ede0a01da..9c21000df0b5ea1b99a83fd73a338073cb7fd016 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