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| author |   Jack F Vogel <jfv@bluesong.net> | 2005-05-01 08:58:48 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-05-01 08:58:48 -0700 |
| commit | 67701ae9767534534d3710664037dfde2cc04935 (patch) | |
| tree | 6adb8d33585f8eee20794827c79e40991aeeaee5 /include/asm-i386 | |
| parent | [PATCH] i386/x86_64 segment register access update (diff) | |
| download | linux-dev-67701ae9767534534d3710664037dfde2cc04935.tar.xz linux-dev-67701ae9767534534d3710664037dfde2cc04935.zip | |
[PATCH] check nmi watchdog is broken
A bug against an xSeries system showed up recently noting that the
check_nmi_watchdog() test was failing.
I have been investigating it and discovered in both i386 and x86_64 the
recent change to the routine to use the cpu_callin_map has uncovered a
problem. Prior to that change, on an SMP box, the test was trivally
passing because all cpu's were found to not yet be online, but now with the
callin_map they are discovered, it goes on to test the counter and they
have not yet begun to increment, so it announces a CPU is stuck and bails
out.
On all the systems I have access to test, the announcement of failure is
also bougs... by the time you can login and check /proc/interrupts, the
NMI count is happily incrementing on all CPUs. Its just that the test is
being done too early.
I have tried moving the call to the test around a bit, and it was always
too early. I finally hit on this proposed solution, it delays the routine
via a late_initcall(), seems like the right solution to me.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-i386')
| -rw-r--r-- | include/asm-i386/apic.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/asm-i386/apic.h b/include/asm-i386/apic.h index e1de67483f38..a5810cf7b578 100644 --- a/include/asm-i386/apic.h +++ b/include/asm-i386/apic.h @@ -109,7 +109,6 @@ extern int APIC_init_uniprocessor (void); extern void disable_APIC_timer(void); extern void enable_APIC_timer(void); -extern int check_nmi_watchdog (void); extern void enable_NMI_through_LVT0 (void * dummy); extern unsigned int nmi_watchdog; |