diff options
| author | Don Zickus <dzickus@redhat.com> | 2006-09-26 10:52:26 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-09-26 10:52:26 +0200 |
| commit | b7471c6da94d30d3deadc55986cc38d1ff57f9ca (patch) | |
| tree | 6aa23314273763acccbe9ddd0b8bd442edde0509 /arch/i386/oprofile | |
| parent | [PATCH] Add SMP support on x86_64 to reservation framework (diff) | |
| download | linux-b7471c6da94d30d3deadc55986cc38d1ff57f9ca.tar.xz linux-b7471c6da94d30d3deadc55986cc38d1ff57f9ca.zip | |
[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.c | 4 |
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 930a1127bb30..a33a73bb502d 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; |