iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

x86, alternative: Call stop_machine_text_poke() on all cpus

Browse Source 
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>
This commit is contained in:
Jason Baron 2010-10-28 11:20:27 -04:00 committed by H. Peter Anvin
parent 5c1eb08936
commit 404ba5d7bb
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/kernel/alternative.c
View File

@ -638,7 +638,7 @@ void *__kprobes text_poke_smp(void *addr, const void *opcode, size_t len)
atomic_set(&stop_machine_first, 1); atomic_set(&stop_machine_first, 1);
wrote_text = 0; wrote_text = 0;
/* Use __stop_machine() because the caller already got online_cpus. */ /* 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; return addr;
} }