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x86: make nmi_shootdown_cpus() available on !SMP and !X86_LOCAL_APIC 

Impact: widen nmi_shootdown_cpus() availability

The X86_LOCAL_APIC #ifdef was for kdump. For !SMP, the function simply
does nothing.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Eduardo Habkost 2008-11-12 11:34:43 -02:00 committed by Ingo Molnar
parent 2ddded2138
commit bb8dd270e6
1 changed files with 12 additions and 1 deletions
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13
arch/x86/kernel/reboot.c
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@ -519,7 +519,7 @@ void machine_crash_shutdown(struct pt_regs *regs)
#endif
#if defined(CONFIG_SMP) && defined(CONFIG_X86_LOCAL_APIC)
#if defined(CONFIG_SMP)
/* This keeps a track of which one is crashing cpu. */
static int crashing_cpu;
@ -568,6 +568,12 @@ static struct notifier_block crash_nmi_nb = {
.notifier_call = crash_nmi_callback,
};
/* Halt all other CPUs, calling the specified function on each of them
*
* This function can be used to halt all other CPUs on crash
* or emergency reboot time. The function passed as parameter
* will be called inside a NMI handler on all CPUs.
*/
void nmi_shootdown_cpus(nmi_shootdown_cb callback)
{
unsigned long msecs;
@ -596,4 +602,9 @@ void nmi_shootdown_cpus(nmi_shootdown_cb callback)
/* Leave the nmi callback set */
}
#else /* !CONFIG_SMP */
void nmi_shootdown_cpus(nmi_shootdown_cb callback)
{
/* No other CPUs to shoot down */
}
#endif