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authorRuss Anderson <rja@sgi.com>2010-02-26 10:49:12 -0600
committerIngo Molnar <mingo@elte.hu>2010-02-27 12:34:21 +0100
commit78c06176466cbd1b3f0f67709d3023c40dbebcbd (patch)
tree8cb56dc82cd9aa07adcdceeab09a493f717b50d4 /arch/x86/include/asm/uv
parent36028f3383872eefb558a4aae4c12ec2b5fa640f (diff)
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/include/asm/uv')
-rw-r--r--arch/x86/include/asm/uv/uv.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/uv/uv.h b/arch/x86/include/asm/uv/uv.h
index c0a01b5d985..3bb9491b765 100644
--- a/arch/x86/include/asm/uv/uv.h
+++ b/arch/x86/include/asm/uv/uv.h
@@ -11,6 +11,7 @@ struct mm_struct;
extern enum uv_system_type get_uv_system_type(void);
extern int is_uv_system(void);
extern void uv_cpu_init(void);
+extern void uv_nmi_init(void);
extern void uv_system_init(void);
extern const struct cpumask *uv_flush_tlb_others(const struct cpumask *cpumask,
struct mm_struct *mm,