Commit 8ea5648c authored by Andi Kleen's avatar Andi Kleen Committed by Linus Torvalds

[PATCH] x86_64: Don't wait on panic

Don't wait for a response from other CPUs on panic
Signed-off-by: default avatarAndi Kleen <ak@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 7574828b
......@@ -305,11 +305,13 @@ static void __smp_call_function (void (*func) (void *info), void *info,
/* Send a message to all other CPUs and wait for them to respond */
send_IPI_allbutself(CALL_FUNCTION_VECTOR);
if (!wait)
return;
/* Wait for response */
while (atomic_read(&data.started) != cpus)
barrier();
if (wait)
while (atomic_read(&data.finished) != cpus)
barrier();
}
......@@ -361,11 +363,10 @@ void smp_send_stop(void)
int nolock = 0;
/* Don't deadlock on the call lock in panic */
if (!spin_trylock(&call_lock)) {
udelay(100);
/* ignore locking because we have paniced anyways */
nolock = 1;
}
__smp_call_function(smp_really_stop_cpu, NULL, 1, 0);
__smp_call_function(smp_really_stop_cpu, NULL, 0, 0);
if (!nolock)
spin_unlock(&call_lock);
smp_stop_cpu();
......
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