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authorDon Zickus <dzickus@redhat.com>2006-09-26 10:52:26 +0200
committerAndi Kleen <andi@basil.nowhere.org>2006-09-26 10:52:26 +0200
commitb7471c6da94d30d3deadc55986cc38d1ff57f9ca (patch)
tree6aa23314273763acccbe9ddd0b8bd442edde0509 /arch/i386/oprofile
parentf2802e7f571c05f9a901b1f5bd144aa730ccc88e (diff)
downloadlinux-2.6.34-ux500-b7471c6da94d30d3deadc55986cc38d1ff57f9ca.tar.gz
[PATCH] i386: Add SMP support on i386 to reservation framework
This patch includes the changes to make the nmi watchdog on i386 SMP aware. A bunch of code was moved around to make it simpler to read. In addition, it is now possible to determine if a particular NMI was the result of the watchdog or not. This feature allows the kernel to filter out unknown NMIs easier. Signed-off-by: Don Zickus <dzickus@redhat.com> Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch/i386/oprofile')
-rw-r--r--arch/i386/oprofile/nmi_timer_int.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/i386/oprofile/nmi_timer_int.c b/arch/i386/oprofile/nmi_timer_int.c
index 930a1127bb3..a33a73bb502 100644
--- a/arch/i386/oprofile/nmi_timer_int.c
+++ b/arch/i386/oprofile/nmi_timer_int.c
@@ -42,9 +42,7 @@ static void timer_stop(void)
int __init op_nmi_timer_init(struct oprofile_operations * ops)
{
- extern int nmi_active;
-
- if (nmi_active <= 0)
+ if (atomic_read(&nmi_active) <= 0)
return -ENODEV;
ops->start = timer_start;