diff options
| author | Eduardo Habkost <ehabkost@redhat.com> | 2008-11-12 14:34:40 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-11-12 18:55:46 +0100 |
| commit | 8e294786316aca41c66b8b73ba1ee74a4ae7d452 (patch) | |
| tree | 41f2f3c8ff651b90580d08b2efaff5095b7c1ec6 /arch/x86/kernel/crash.c | |
| parent | x86 kdump: create kdump_nmi_shootdown_cpus() (diff) | |
| download | linux-8e294786316aca41c66b8b73ba1ee74a4ae7d452.tar.xz linux-8e294786316aca41c66b8b73ba1ee74a4ae7d452.zip | |
x86 kdump: make kdump_nmi_callback() a function ptr on crash_nmi_callback()
Impact: extend nmi_shootdown_cpus() with a callback
The reboot code will use a different function on crash_nmi_callback().
Adding a function pointer parameter to nmi_shootdown_cpus() for that.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/crash.c')
| -rw-r--r-- | arch/x86/kernel/crash.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c index 75c468cc7e59..f23c2beeb37d 100644 --- a/arch/x86/kernel/crash.c +++ b/arch/x86/kernel/crash.c @@ -29,10 +29,13 @@ #include <mach_ipi.h> +typedef void (*nmi_shootdown_cb)(int, struct die_args*); + #if defined(CONFIG_SMP) && defined(CONFIG_X86_LOCAL_APIC) /* This keeps a track of which one is crashing cpu. */ static int crashing_cpu; +static nmi_shootdown_cb shootdown_callback; static atomic_t waiting_for_crash_ipi; @@ -74,7 +77,7 @@ static int crash_nmi_callback(struct notifier_block *self, return NOTIFY_STOP; local_irq_disable(); - kdump_nmi_callback(cpu, (struct die_args *)data); + shootdown_callback(cpu, (struct die_args *)data); atomic_dec(&waiting_for_crash_ipi); /* Assume hlt works */ @@ -97,13 +100,15 @@ static struct notifier_block crash_nmi_nb = { .notifier_call = crash_nmi_callback, }; -static void nmi_shootdown_cpus(void) +static void nmi_shootdown_cpus(nmi_shootdown_cb callback) { unsigned long msecs; /* Make a note of crashing cpu. Will be used in NMI callback.*/ crashing_cpu = safe_smp_processor_id(); + shootdown_callback = callback; + atomic_set(&waiting_for_crash_ipi, num_online_cpus() - 1); /* Would it be better to replace the trap vector here? */ if (register_die_notifier(&crash_nmi_nb)) @@ -126,7 +131,7 @@ static void nmi_shootdown_cpus(void) static void kdump_nmi_shootdown_cpus(void) { - nmi_shootdown_cpus(); + nmi_shootdown_cpus(kdump_nmi_callback); disable_local_APIC(); } |