path: root/arch/mn10300/kernel
diff options
authorYong Zhang <>2012-05-29 15:15:57 +0800
committerThomas Gleixner <>2012-06-05 17:27:12 +0200
commit4cbd19fcf9d49f28766415b96eb6201bc263d817 (patch)
treeccb33114402962236da86781bf4cc96feabe18e9 /arch/mn10300/kernel
parent4ee0444bebf3d0399c93841d98826ade193e6330 (diff)
mn10300: SMP: Remove call to ipi_call_lock()/ipi_call_unlock()
ipi_call_lock/unlock() lock resp. unlock call_function.lock. This lock protects only the call_function data structure itself, but it's completely unrelated to cpu_online_mask. The mask to which the IPIs are sent is calculated before call_function.lock is taken in smp_call_function_many(), so the locking around set_cpu_online() is pointless and can be removed. [ tglx: Massaged changelog ] Signed-off-by: Yong Zhang <> Cc: Cc: Cc: Cc: Cc: Cc: Cc: Cc: David Howells <> Cc: Koichi Yasutake <> Cc: Link: Acked-by: Srivatsa S. Bhat <> Acked-by: Peter Zijlstra <> Signed-off-by: Thomas Gleixner <>
Diffstat (limited to 'arch/mn10300/kernel')
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/mn10300/kernel/smp.c b/arch/mn10300/kernel/smp.c
index 090d35d36973..e62c223e4c45 100644
--- a/arch/mn10300/kernel/smp.c
+++ b/arch/mn10300/kernel/smp.c
@@ -876,9 +876,7 @@ static void __init smp_online(void)
- ipi_call_lock();
set_cpu_online(cpu, true);
- ipi_call_unlock();