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| author |   Jay Lan <jlan@sgi.com> | 2007-04-03 17:53:42 -0700 |
|---|---|---|
| committer |   Tony Luck <tony.luck@intel.com> | 2007-05-14 15:55:39 -0700 |
| commit | 311f594dec9b0c8693ec7df75b82c251b6b0e7c2 (patch) | |
| tree | 1cd73b7df869c0a8c274e16b818454bed532d052 /arch/ia64/kernel/mca.c | |
| parent | [IA64] wire up {signal,timer,event}fd syscalls (diff) | |
| download | linux-dev-311f594dec9b0c8693ec7df75b82c251b6b0e7c2.tar.xz linux-dev-311f594dec9b0c8693ec7df75b82c251b6b0e7c2.zip | |
[IA64] kdump on INIT needs multi-nodes sync-up (v.2)
The current implementation of kdump on INIT events would enter
kdump processing on DIE_INIT_MONARCH_ENTER and DIE_INIT_SLAVE_ENTER
events. Thus, the monarch cpu would go ahead and boot up the kdump
On SN shub2 systems, this out-of-sync situation causes some slave
cpus on different nodes to enter POD.
This patch moves kdump entry points to DIE_INIT_MONARCH_LEAVE and
DIE_INIT_SLAVE_LEAVE. It also sets kdump_in_progress variable in
the DIE_INIT_MONARCH_PROCESS event to not dump all active stack
traces to the console in the case of kdump.
I have tested this patch on an SN machine and a HP RX2600.
Signed-off-by: Jay Lan <jlan@sgi.com>
Acked-by: Zou Nan hai <nanhai.zou@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/ia64/kernel/mca.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c index 26814de6c29a..93e82e4d99d6 100644 --- a/arch/ia64/kernel/mca.c +++ b/arch/ia64/kernel/mca.c @@ -1477,6 +1477,10 @@ default_monarch_init_process(struct notifier_block *self, unsigned long val, voi struct task_struct *g, *t; if (val != DIE_INIT_MONARCH_PROCESS) return NOTIFY_DONE; +#ifdef CONFIG_KEXEC + if (atomic_read(&kdump_in_progress)) + return NOTIFY_DONE; +#endif /* * FIXME: mlogbuf will brim over with INIT stack dumps. |