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authorYong Zhang <yong.zhang0@gmail.com>2012-05-29 15:15:56 +0800
committerThomas Gleixner <tglx@linutronix.de>2012-06-05 17:27:11 +0200
commit4ee0444bebf3d0399c93841d98826ade193e6330 (patch)
tree5bbff111a71b2fbbf165b3ce480bdb885d14d898 /arch/hexagon/kernel
parent99becf1328d8d71dd6f4480e3591d7dcdb389e57 (diff)
downloadvexpress-lsk-4ee0444bebf3d0399c93841d98826ade193e6330.tar.gz
hexagon: 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 <yong.zhang0@gmail.com> Cc: ralf@linux-mips.org Cc: sshtylyov@mvista.com Cc: david.daney@cavium.com Cc: nikunj@linux.vnet.ibm.com Cc: paulmck@linux.vnet.ibm.com Cc: axboe@kernel.dk Cc: Richard Kuo <rkuo@codeaurora.org> Cc: linux-hexagon@vger.kernel.org Link: http://lkml.kernel.org/r/1338275765-3217-2-git-send-email-yong.zhang0@gmail.com Acked-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/hexagon/kernel')
-rw-r--r--arch/hexagon/kernel/smp.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/hexagon/kernel/smp.c b/arch/hexagon/kernel/smp.c
index f7264621e58..149fbefc1a4 100644
--- a/arch/hexagon/kernel/smp.c
+++ b/arch/hexagon/kernel/smp.c
@@ -180,9 +180,7 @@ void __cpuinit start_secondary(void)
notify_cpu_starting(cpu);
- ipi_call_lock();
set_cpu_online(cpu, true);
- ipi_call_unlock();
local_irq_enable();