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x86, NMI: Remove DIE_NMI_IPI

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With priorities in place and no one really understanding the difference between
DIE_NMI and DIE_NMI_IPI, just remove DIE_NMI_IPI and convert everyone to DIE_NMI.

This also simplifies default_do_nmi() a little bit.  Instead of calling the
die_notifier in both the if and else part, just pull it out and call it before
the if-statement.  This has the side benefit of avoiding a call to the ioport
to see if there is an external NMI sitting around until after the (more frequent)
internal NMIs are dealt with.

Patch-Inspired-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Don Zickus <dzickus@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1294348732-15030-5-git-send-email-dzickus@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Don Zickus 2011-01-06 16:18:50 -05:00 • committed by Ingo Molnar
parent 166d751479
commit c410b83077
8 changed files with 12 additions and 21 deletions
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3
arch/x86/kernel/reboot.c
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@ -18,6 +18,7 @@
#include <asm/pci_x86.h>
#include <asm/virtext.h>
#include <asm/cpu.h>
#include <asm/nmi.h>
#ifdef CONFIG_X86_32
# include <linux/ctype.h>
@ -747,7 +748,7 @@ static int crash_nmi_callback(struct notifier_block *self,
{
int cpu;
if (val != DIE_NMI_IPI)
if (val != DIE_NMI)
return NOTIFY_OK;
cpu = raw_smp_processor_id();