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authorJason Baron <jbaron@redhat.com>2010-10-28 11:20:27 -0400
committerH. Peter Anvin <hpa@zytor.com>2010-10-29 16:42:58 -0700
commit404ba5d7bb958d3d788bdaa0debc0bdf60f13ffe (patch)
tree0605498ad8f207de58bfefa5b4b62ad79f91be8f /arch/x86/kernel/alternative.c
parent5c1eb08936693cd78c71164c8bea0b086ae72c67 (diff)
x86, alternative: Call stop_machine_text_poke() on all cpus
Currently, text_poke_smp() passes a NULL as the third argument to __stop_machine(), which will only run stop_machine_text_poke() on 1 cpu. Change NULL -> cpu_online_mask, as stop_machine_text_poke() is intended to be run on all cpus. I actually didn't notice any problems with stop_machine_text_poke() only being called on 1 cpu, but found this via code inspection. Signed-off-by: Jason Baron <jbaron@redhat.com> LKML-Reference: <20101028152026.GB2875@redhat.com> Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/kernel/alternative.c')
-rw-r--r--arch/x86/kernel/alternative.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index a36bb90aef53..5ceeca382820 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -638,7 +638,7 @@ void *__kprobes text_poke_smp(void *addr, const void *opcode, size_t len)
atomic_set(&stop_machine_first, 1);
wrote_text = 0;
/* Use __stop_machine() because the caller already got online_cpus. */
- __stop_machine(stop_machine_text_poke, (void *)&tpp, NULL);
+ __stop_machine(stop_machine_text_poke, (void *)&tpp, cpu_online_mask);
return addr;
}