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authorHidetoshi Seto <[seto.hidetoshi@jp.fujitsu.com]>2009-08-06 23:51:57 +0200
committerTony Luck <tony.luck@intel.com>2009-09-15 01:19:10 +0200
commit5959906ee9dee602a46e49c868a7e543e050d605 (patch)
tree8fe75fa3461aa83d4185d126755a90aa4be4d68a /arch/ia64/kernel/crash.c
parent[IA64] kdump: Mask INIT first in panic-kdump path (diff)
downloadlinux-5959906ee9dee602a46e49c868a7e543e050d605.tar.xz
linux-5959906ee9dee602a46e49c868a7e543e050d605.zip
[IA64] kdump: Try INIT regardless of
kdump_on_init CPUs should be frozen if possible, otherwise it might hinder kdump. So if there are CPUs not respond to IPI, try INIT to stop them. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Haren Myneni <hbabu@us.ibm.com> Cc: kexec@lists.infradead.org Acked-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/kernel/crash.c')
-rw-r--r--arch/ia64/kernel/crash.c43
1 files changed, 21 insertions, 22 deletions
diff --git a/arch/ia64/kernel/crash.c b/arch/ia64/kernel/crash.c
index 9c851b73f276..0995fdc7b299 100644
--- a/arch/ia64/kernel/crash.c
+++ b/arch/ia64/kernel/crash.c
@@ -138,8 +138,10 @@ machine_crash_shutdown(struct pt_regs *pt)
*/
kdump_smp_send_stop();
/* not all cpu response to IPI, send INIT to freeze them */
- if (kdump_wait_cpu_freeze() && kdump_on_init) {
+ if (kdump_wait_cpu_freeze()) {
kdump_smp_send_init();
+ /* wait again, don't go ahead if possible */
+ kdump_wait_cpu_freeze();
}
#endif
}
@@ -178,6 +180,19 @@ kdump_init_notifier(struct notifier_block *self, unsigned long val, void *data)
struct ia64_mca_notify_die *nd;
struct die_args *args = data;
+ if (atomic_read(&kdump_in_progress)) {
+ switch (val) {
+ case DIE_INIT_MONARCH_LEAVE:
+ if (!kdump_freeze_monarch)
+ break;
+ /* fall through */
+ case DIE_INIT_SLAVE_LEAVE:
+ case DIE_MCA_RENDZVOUS_LEAVE:
+ unw_init_running(kdump_cpu_freeze, NULL);
+ break;
+ }
+ }
+
if (!kdump_on_init && !kdump_on_fatal_mca)
return NOTIFY_DONE;
@@ -190,41 +205,25 @@ kdump_init_notifier(struct notifier_block *self, unsigned long val, void *data)
}
if (val != DIE_INIT_MONARCH_LEAVE &&
- val != DIE_INIT_SLAVE_LEAVE &&
val != DIE_INIT_MONARCH_PROCESS &&
- val != DIE_MCA_RENDZVOUS_LEAVE &&
val != DIE_MCA_MONARCH_LEAVE)
return NOTIFY_DONE;
nd = (struct ia64_mca_notify_die *)args->err;
- /* Reason code 1 means machine check rendezvous*/
- if ((val == DIE_INIT_MONARCH_LEAVE || val == DIE_INIT_SLAVE_LEAVE
- || val == DIE_INIT_MONARCH_PROCESS) && nd->sos->rv_rc == 1)
- return NOTIFY_DONE;
switch (val) {
case DIE_INIT_MONARCH_PROCESS:
- if (kdump_on_init) {
+ /* Reason code 1 means machine check rendezvous*/
+ if (kdump_on_init && (nd->sos->rv_rc != 1)) {
if (atomic_inc_return(&kdump_in_progress) != 1)
kdump_freeze_monarch = 1;
*(nd->monarch_cpu) = -1;
}
break;
case DIE_INIT_MONARCH_LEAVE:
- if (kdump_on_init) {
- if (kdump_freeze_monarch)
- unw_init_running(kdump_cpu_freeze, NULL);
- else
- machine_kdump_on_init();
- }
- break;
- case DIE_INIT_SLAVE_LEAVE:
- if (atomic_read(&kdump_in_progress))
- unw_init_running(kdump_cpu_freeze, NULL);
- break;
- case DIE_MCA_RENDZVOUS_LEAVE:
- if (atomic_read(&kdump_in_progress))
- unw_init_running(kdump_cpu_freeze, NULL);
+ /* Reason code 1 means machine check rendezvous*/
+ if (kdump_on_init && (nd->sos->rv_rc != 1))
+ machine_kdump_on_init();
break;
case DIE_MCA_MONARCH_LEAVE:
/* *(nd->data) indicate if MCA is recoverable */