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| author | David S. Miller <davem@davemloft.net> | 2010-04-07 04:38:52 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-04-13 09:37:07 +0400 |
| commit | daecbf58a509bc27c112647e825df763c3e3b0f4 (patch) | |
| tree | 871f5dd9e18ff2f4c4ff88a004527a5b0e974f51 /arch/sparc | |
| parent | f8e8a8e8cba3359df2a16c17d59eedb08adf3b43 (diff) | |
| download | linux-daecbf58a509bc27c112647e825df763c3e3b0f4.tar.xz | |
sparc64: Use a seperate counter for timer interrupts and NMI checks, like x86.
This keeps us from having to use kstat_irqs_cpu() from the NMI handler,
the former of which is a profiled function.
Instead we use a currently empty slot in the cpu_data
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc')
| -rw-r--r-- | arch/sparc/include/asm/cpudata_64.h | 2 | ||||
| -rw-r--r-- | arch/sparc/kernel/nmi.c | 3 | ||||
| -rw-r--r-- | arch/sparc/kernel/time_64.c | 1 |
3 files changed, 3 insertions, 3 deletions
diff --git a/arch/sparc/include/asm/cpudata_64.h b/arch/sparc/include/asm/cpudata_64.h index 926397d345ff..050ef35b9dcf 100644 --- a/arch/sparc/include/asm/cpudata_64.h +++ b/arch/sparc/include/asm/cpudata_64.h @@ -17,7 +17,7 @@ typedef struct { unsigned int __nmi_count; unsigned long clock_tick; /* %tick's per second */ unsigned long __pad; - unsigned int __pad1; + unsigned int irq0_irqs; unsigned int __pad2; /* Dcache line 2, rarely used */ diff --git a/arch/sparc/kernel/nmi.c b/arch/sparc/kernel/nmi.c index b287b62c7ea3..75a3d1a25356 100644 --- a/arch/sparc/kernel/nmi.c +++ b/arch/sparc/kernel/nmi.c @@ -92,7 +92,6 @@ 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; - int cpu = smp_processor_id(); clear_softint(1 << irq); @@ -106,7 +105,7 @@ notrace __kprobes void perfctr_irq(int irq, struct pt_regs *regs) else pcr_ops->write(PCR_PIC_PRIV); - sum = kstat_irqs_cpu(0, cpu); + sum = local_cpu_data().irq0_irqs; if (__get_cpu_var(nmi_touch)) { __get_cpu_var(nmi_touch) = 0; touched = 1; diff --git a/arch/sparc/kernel/time_64.c b/arch/sparc/kernel/time_64.c index 67e165102885..f25858e442ab 100644 --- a/arch/sparc/kernel/time_64.c +++ b/arch/sparc/kernel/time_64.c @@ -728,6 +728,7 @@ void timer_interrupt(int irq, struct pt_regs *regs) irq_enter(); + local_cpu_data().irq0_irqs++; kstat_incr_irqs_this_cpu(0, irq_to_desc(0)); if (unlikely(!evt->event_handler)) { |