diff options
| author | Russ Anderson <rja@sgi.com> | 2010-02-26 17:49:12 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-02-27 12:34:21 +0100 |
| commit | 78c06176466cbd1b3f0f67709d3023c40dbebcbd (patch) | |
| tree | 8cb56dc82cd9aa07adcdceeab09a493f717b50d4 /arch/x86/kernel/x86_init.c | |
| parent | vgaarb: Add user selectability of the number of GPUS in a system (diff) | |
| download | linux-78c06176466cbd1b3f0f67709d3023c40dbebcbd.tar.xz linux-78c06176466cbd1b3f0f67709d3023c40dbebcbd.zip | |
x86: Enable NMI on all cpus on UV
Enable NMI on all cpus in UV system and add an NMI handler
to dump_stack on each cpu.
By default on x86 all the cpus except the boot cpu have NMI
masked off. This patch enables NMI on all cpus in UV system
and adds an NMI handler to dump_stack on each cpu. This
way if a system hangs we can NMI the machine and get a
backtrace from all the cpus.
Version 2: Use x86_platform driver mechanism for nmi init, per
Ingo's suggestion.
Version 3: Clean up Ingo's nits.
Signed-off-by: Russ Anderson <rja@sgi.com>
LKML-Reference: <20100226164912.GA24439@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/x86_init.c')
| -rw-r--r-- | arch/x86/kernel/x86_init.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c index ccd179dec36e..ee5746c94628 100644 --- a/arch/x86/kernel/x86_init.c +++ b/arch/x86/kernel/x86_init.c @@ -76,10 +76,13 @@ struct x86_cpuinit_ops x86_cpuinit __cpuinitdata = { .setup_percpu_clockev = setup_secondary_APIC_clock, }; +static void default_nmi_init(void) { }; + struct x86_platform_ops x86_platform = { .calibrate_tsc = native_calibrate_tsc, .get_wallclock = mach_get_cmos_time, .set_wallclock = mach_set_rtc_mmss, .iommu_shutdown = iommu_shutdown_noop, .is_untracked_pat_range = is_ISA_range, + .nmi_init = default_nmi_init }; |