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[PATCH] i386/x86-64: Fix NMI watchdog suspend/resume

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Making NMI suspend/resume work with SMP. We use CPU hotplug to offline
APs in SMP suspend/resume. Only BSP executes sysdev's .suspend/.resume
method. APs should follow CPU hotplug code path.

And:

+From: Don Zickus <[email protected]>

Makes the start/stop paths of nmi watchdog more robust to handle the
suspend/resume cases more gracefully.

AK: I merged the two patches together

Signed-off-by: Shaohua Li <[email protected]>
Signed-off-by: Andi Kleen <[email protected]>
Cc: Don Zickus <[email protected]>
Cc: Andi Kleen <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
This commit is contained in:
Shaohua Li 2006-09-26 10:52:27 +02:00 • committed by Andi Kleen
commit 4038f901cf
6 changed files with 58 additions and 15 deletions
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1
include/asm-i386/nmi.h
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@ -23,6 +23,7 @@ extern int reserve_evntsel_nmi(unsigned int);
extern void release_evntsel_nmi(unsigned int);
extern void setup_apic_nmi_watchdog (void *);
extern void stop_apic_nmi_watchdog (void *);
extern void disable_timer_nmi_watchdog(void);
extern void enable_timer_nmi_watchdog(void);
extern int nmi_watchdog_tick (struct pt_regs * regs, unsigned reason);