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| author | Steven Rostedt <srostedt@redhat.com> | 2010-05-14 09:29:52 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2010-05-14 09:29:52 -0400 |
| commit | 23e117fa44429cc054cb27d5621d64e4ced91e52 (patch) | |
| tree | a4b9d0902b9c6f009b2c297515221c1b9bed3af8 /arch/sparc/kernel/nmi.c | |
| parent | 668eb65f092902eb7dd526af73d4a7f025a94612 (diff) | |
| parent | a93d2f1744206827ccf416e2cdc5018aa503314e (diff) | |
| download | linux-23e117fa44429cc054cb27d5621d64e4ced91e52.tar.bz2 | |
Merge branch 'sched/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip into trace/tip/tracing/core-4
Diffstat (limited to 'arch/sparc/kernel/nmi.c')
| -rw-r--r-- | arch/sparc/kernel/nmi.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/sparc/kernel/nmi.c b/arch/sparc/kernel/nmi.c index 75a3d1a25356..a4bd7ba74c89 100644 --- a/arch/sparc/kernel/nmi.c +++ b/arch/sparc/kernel/nmi.c @@ -23,6 +23,8 @@ #include <asm/ptrace.h> #include <asm/pcr.h> +#include "kstack.h" + /* We don't have a real NMI on sparc64, but we can fake one * up using profiling counter overflow interrupts and interrupt * levels. @@ -92,6 +94,7 @@ static void die_nmi(const char *str, struct pt_regs *regs, int do_panic) notrace __kprobes void perfctr_irq(int irq, struct pt_regs *regs) { unsigned int sum, touched = 0; + void *orig_sp; clear_softint(1 << irq); @@ -99,6 +102,8 @@ notrace __kprobes void perfctr_irq(int irq, struct pt_regs *regs) nmi_enter(); + orig_sp = set_hardirq_stack(); + if (notify_die(DIE_NMI, "nmi", regs, 0, pt_regs_trap_type(regs), SIGINT) == NOTIFY_STOP) touched = 1; @@ -124,6 +129,8 @@ notrace __kprobes void perfctr_irq(int irq, struct pt_regs *regs) pcr_ops->write(pcr_enable); } + restore_hardirq_stack(orig_sp); + nmi_exit(); } |