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| author | Fernando Vazquez <fernando@intellilink.co.jp> | 2006-10-01 08:29:10 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-01 09:39:31 +0200 |
| commit | bc03613decef0cc4d2f3a24f19fa5a868745715f (patch) | |
| tree | 7c3343b100ae399df29815d709e4ab01768141ca /arch | |
| parent | [PATCH] stack overflow safe kdump: crash: use safe_smp_processor_id() (diff) | |
| download | linux-bc03613decef0cc4d2f3a24f19fa5a868745715f.tar.xz linux-bc03613decef0cc4d2f3a24f19fa5a868745715f.zip | |
[PATCH] stack overflow safe kdump: safe smp_send_nmi_allbutself()
Re-implement smp_send_nmi_allbutself() so that calls to smp_processor_id
(through send_IPI_allbutself) can be replaced with safe_smp_processor_id
without affecting other parts of the kernel (as suggested by Eric Biederman).
Signed-off-by: Fernando Vazquez <fernando@intellilink.co.jp>
Looks-reasonable-to: Andi Kleen <ak@muc.de>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@in.ibm.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/kernel/crash.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/i386/kernel/crash.c b/arch/i386/kernel/crash.c index 2dfc049dafa3..144b43288965 100644 --- a/arch/i386/kernel/crash.c +++ b/arch/i386/kernel/crash.c @@ -134,7 +134,10 @@ static int crash_nmi_callback(struct notifier_block *self, static void smp_send_nmi_allbutself(void) { - send_IPI_allbutself(NMI_VECTOR); + cpumask_t mask = cpu_online_map; + cpu_clear(safe_smp_processor_id(), mask); + if (!cpus_empty(mask)) + send_IPI_mask(mask, NMI_VECTOR); } static struct notifier_block crash_nmi_nb = { |