[PATCH 3/7] smp: use __cpumask_set_cpu in on_each_cpu_cond

[Rik van Riel]

The code in on_each_cpu_cond sets CPUs in a locally allocated bitmask,
which should never be used by other CPUs simultaneously. There is no
need to use locked memory accesses to set the bits in this bitmap.

Switch to __cpumask_set_cpu.

Suggested-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Signed-off-by: Rik van Riel <riel@xxxxxxxxxxx>
Reviewed-by: Andy Lutomirski <luto@xxxxxxxxxx>
---
 kernel/smp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/smp.c b/kernel/smp.c
index d86eec5f51c1..a7d4f9f50a49 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -682,7 +682,7 @@ void on_each_cpu_cond(bool (*cond_func)(int cpu, void *info),
 		preempt_disable();
 		for_each_online_cpu(cpu)
 			if (cond_func(cpu, info))
-				cpumask_set_cpu(cpu, cpus);
+				__cpumask_set_cpu(cpu, cpus);
 		on_each_cpu_mask(cpus, func, info, wait);
 		preempt_enable();
 		free_cpumask_var(cpus);
-- 
2.17.1