diff options
author | Bernhard Walle <bwalle@suse.de> | 2008-10-26 15:59:37 +0100 |
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committer | Wim Van Sebroeck <wim@iguana.be> | 2008-12-01 15:55:10 +0000 |
commit | 290172e79036fc25a22aaf3da4835ee634886183 (patch) | |
tree | 9cbfb01fdbb4a390b84c1e929e55b38e0cae648a /arch/arm/include/asm/kgdb.h | |
parent | 060264133b946786b4b28a1ba79e6725eaf258f3 (diff) |
[WATCHDOG] hpwdt: Fix kdump when using hpwdt
When the "hpwdt" module is loaded (even if the /dev/watchdog device is not
opened), then kdump does not work. The panic kernel either does not start at
all or crash in various places.
The problem is that hpwdt_pretimeout is registered with register_die_notifier()
with the highest possible priority. Because it returns NOTIFY_STOP, the
crash_nmi_callback which is also registered with register_die_notifier()
is never executed. This causes the shutdown of other CPUs to fail.
Reverting the order is no option: The crash_nmi_callback executes HLT
and so never returns normally. Because of that, it must be executed as
last notifier, which currently is done.
So, that patch returns NOTIFY_OK to keep the crash_nmi_callback executed.
Signed-off-by: Bernhard Walle <bwalle@suse.de>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Thomas Mingarelli <thomas.mingarelli@hp.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Diffstat (limited to 'arch/arm/include/asm/kgdb.h')
0 files changed, 0 insertions, 0 deletions