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| author | Yong Zhang <yong.zhang0@gmail.com> | 2012-05-29 15:15:56 +0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2012-06-05 17:27:11 +0200 |
| commit | 4ee0444bebf3d0399c93841d98826ade193e6330 (patch) | |
| tree | 5bbff111a71b2fbbf165b3ce480bdb885d14d898 | |
| parent | 99becf1328d8d71dd6f4480e3591d7dcdb389e57 (diff) | |
| download | blackbird-op-linux-4ee0444bebf3d0399c93841d98826ade193e6330.tar.gz blackbird-op-linux-4ee0444bebf3d0399c93841d98826ade193e6330.zip | |
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>
| -rw-r--r-- | arch/hexagon/kernel/smp.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/hexagon/kernel/smp.c b/arch/hexagon/kernel/smp.c index f7264621e58d..149fbefc1a4d 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(); |
