aboutsummaryrefslogtreecommitdiff
path: root/arch/parisc/kernel
diff options
context:
space:
mode:
authorYong Zhang <yong.zhang0@gmail.com>2012-05-29 15:15:58 +0800
committerThomas Gleixner <tglx@linutronix.de>2012-06-05 17:27:12 +0200
commitac4216d6922f90c459d531e051c832dadde3a8f7 (patch)
treec46c68e41fd17d0c6da82163fee886029f2ff35d /arch/parisc/kernel
parent4cbd19fcf9d49f28766415b96eb6201bc263d817 (diff)
downloadvexpress-lsk-ac4216d6922f90c459d531e051c832dadde3a8f7.tar.gz
parisc: 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: peterz@infradead.org Cc: James E.J. Bottomley <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Cc: linux-parisc@vger.kernel.org Link: http://lkml.kernel.org/r/1338275765-3217-4-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/parisc/kernel')
-rw-r--r--arch/parisc/kernel/smp.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index a47828d31fe..6266730efd6 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -300,9 +300,7 @@ smp_cpu_init(int cpunum)
notify_cpu_starting(cpunum);
- ipi_call_lock();
set_cpu_online(cpunum, true);
- ipi_call_unlock();
/* Initialise the idle task for this CPU */
atomic_inc(&init_mm.mm_count);