#include <linux/elfcore.h>
#include <linux/sysctl.h>
#include <linux/init.h>
+#include <linux/kdebug.h>
-#include <asm/kdebug.h>
#include <asm/mca.h>
int kdump_status[NR_CPUS];
static atomic_t kdump_cpu_frozen;
atomic_t kdump_in_progress;
static int kdump_on_init = 1;
+static int kdump_on_fatal_mca = 1;
static inline Elf64_Word
*append_elf_note(Elf64_Word *buf, char *name, unsigned type, void *data,
buf = (u64 *) per_cpu_ptr(crash_notes, cpu);
if (!buf)
return;
- buf = append_elf_note(buf, "CORE", NT_PRSTATUS, prstatus,
+ buf = append_elf_note(buf, KEXEC_CORE_NOTE_NAME, NT_PRSTATUS, prstatus,
sizeof(*prstatus));
final_note(buf);
}
static void
machine_kdump_on_init(void)
{
- if (!ia64_kimage) {
- printk(KERN_NOTICE "machine_kdump_on_init(): "
- "kdump not configured\n");
- return;
- }
+ crash_save_vmcoreinfo();
local_irq_disable();
kexec_disable_iosapic();
machine_kexec(ia64_kimage);
struct ia64_mca_notify_die *nd;
struct die_args *args = data;
- if (!kdump_on_init)
+ if (!kdump_on_init && !kdump_on_fatal_mca)
+ return NOTIFY_DONE;
+
+ if (!ia64_kimage) {
+ if (val == DIE_INIT_MONARCH_LEAVE)
+ ia64_mca_printk(KERN_NOTICE
+ "%s: kdump not configured\n",
+ __func__);
return NOTIFY_DONE;
+ }
- if (val != DIE_INIT_MONARCH_ENTER &&
- val != DIE_INIT_SLAVE_ENTER &&
+ 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 rendezous*/
- if ((val == DIE_INIT_MONARCH_ENTER || DIE_INIT_SLAVE_ENTER) &&
- nd->sos->rv_rc == 1)
+ /* 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_ENTER:
+ case DIE_INIT_MONARCH_PROCESS:
+ if (kdump_on_init) {
+ atomic_set(&kdump_in_progress, 1);
+ *(nd->monarch_cpu) = -1;
+ }
+ break;
+ case DIE_INIT_MONARCH_LEAVE:
+ if (kdump_on_init)
machine_kdump_on_init();
- break;
- case DIE_INIT_SLAVE_ENTER:
+ 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);
- break;
- case DIE_MCA_RENDZVOUS_LEAVE:
- if (atomic_read(&kdump_in_progress))
- unw_init_running(kdump_cpu_freeze, NULL);
- break;
- case DIE_MCA_MONARCH_LEAVE:
- /* die_register->signr indicate if MCA is recoverable */
- if (!args->signr)
- machine_kdump_on_init();
- break;
+ break;
+ case DIE_MCA_MONARCH_LEAVE:
+ /* *(nd->data) indicate if MCA is recoverable */
+ if (kdump_on_fatal_mca && !(*(nd->data))) {
+ atomic_set(&kdump_in_progress, 1);
+ *(nd->monarch_cpu) = -1;
+ machine_kdump_on_init();
+ }
+ break;
}
return NOTIFY_DONE;
}
#ifdef CONFIG_SYSCTL
-static ctl_table kdump_on_init_table[] = {
+static ctl_table kdump_ctl_table[] = {
{
.ctl_name = CTL_UNNUMBERED,
.procname = "kdump_on_init",
.mode = 0644,
.proc_handler = &proc_dointvec,
},
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "kdump_on_fatal_mca",
+ .data = &kdump_on_fatal_mca,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
{ .ctl_name = 0 }
};
.ctl_name = CTL_KERN,
.procname = "kernel",
.mode = 0555,
- .child = kdump_on_init_table,
+ .child = kdump_ctl_table,
},
{ .ctl_name = 0 }
};
static int
machine_crash_setup(void)
{
+ /* be notified before default_monarch_init_process */
static struct notifier_block kdump_init_notifier_nb = {
.notifier_call = kdump_init_notifier,
+ .priority = 1,
};
int ret;
if((ret = register_die_notifier(&kdump_init_notifier_nb)) != 0)