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authorPeter Zijlstra <peterz@infradead.org>2014-03-13 19:00:35 +0100
committerIngo Molnar <mingo@kernel.org>2014-04-18 14:20:46 +0200
commitd00a569284b1340c16fe2c148099e077ea09ebc9 (patch)
tree5e44a663929cdd1288989150ca9a7304a29cabd9 /arch/x86/kernel/apic/hw_nmi.c
parentce3609f93445846f7b5a5b4bacb236a9bdc35216 (diff)
arch,x86: Convert smp_mb__*()
x86 is strongly ordered and all its atomic ops imply a full barrier. Implement the two new primitives as the old ones were. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Link: http://lkml.kernel.org/n/tip-knswsr5mldkr0w1lrdxvc81w@git.kernel.org Cc: Dave Jones <davej@redhat.com> Cc: Jesse Brandeburg <jesse.brandeburg@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Michel Lespinasse <walken@google.com> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/apic/hw_nmi.c')
-rw-r--r--arch/x86/kernel/apic/hw_nmi.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/apic/hw_nmi.c b/arch/x86/kernel/apic/hw_nmi.c
index a698d7165c9..eab67047dec 100644
--- a/arch/x86/kernel/apic/hw_nmi.c
+++ b/arch/x86/kernel/apic/hw_nmi.c
@@ -57,7 +57,7 @@ void arch_trigger_all_cpu_backtrace(void)
}
clear_bit(0, &backtrace_flag);
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
}
static int __kprobes