diff options
author | Michael Neuling <mikey@neuling.org> | 2011-07-04 20:40:10 +0000 |
---|---|---|
committer | Willy Tarreau <w@1wt.eu> | 2012-02-11 15:37:35 +0100 |
commit | 1117403dddee442ba7dbe5920019f36d0ce26645 (patch) | |
tree | f087a0b7ec76a1a02920b00a21d43e45a2d22c3c | |
parent | 4375a50daea42c9e46378c089d60e8c1b1dfded2 (diff) |
powerpc/kdump: Fix timeout in crash_kexec_wait_realmode
commit 63f21a56f1cc0b800a4c00349c59448f82473d19 upstream.
The existing code it pretty ugly. How about we clean it up even more
like this?
From: Anton Blanchard <anton@samba.org>
We check for timeout expiry in the outer loop, but we also need to
check it in the inner loop or we can lock up forever waiting for a
CPU to hit real mode.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Willy Tarreau <w@1wt.eu>
-rw-r--r-- | arch/powerpc/kernel/crash.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c index 50091984685d..d3749742d2a5 100644 --- a/arch/powerpc/kernel/crash.c +++ b/arch/powerpc/kernel/crash.c @@ -176,12 +176,8 @@ static void crash_kexec_wait_realmode(int cpu) while (paca[i].kexec_state < KEXEC_STATE_REAL_MODE) { barrier(); - if (!cpu_possible(i)) { + if (!cpu_possible(i) || !cpu_online(i) || (msecs <= 0)) break; - } - if (!cpu_online(i)) { - break; - } msecs--; mdelay(1); } |