| Date | Fri, 17 May 2013 22:17:18 -0400 | From | Steven Rostedt <> | Subject | [ 081/136 ] x86: Eliminate irq_mis_count counted in arch_irq_stat |
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3.6.11.4 stable review patch. If anyone has any objections, please let me know.
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From: Li Fei <fei.li@intel.com>
[ Upstream commit f7b0e1055574ce06ab53391263b4e205bf38daf3 ]
With the current implementation, kstat_cpu(cpu).irqs_sum is also increased in case of irq_mis_count increment.
So there is no need to count irq_mis_count in arch_irq_stat, otherwise irq_mis_count will be counted twice in the sum of /proc/stat.
Reported-by: Liu Chuansheng <chuansheng.liu@intel.com> Signed-off-by: Li Fei <fei.li@intel.com> Acked-by: Liu Chuansheng <chuansheng.liu@intel.com> Cc: tomoki.sekiyama.qu@hitachi.com Cc: joe@perches.com Link: http://lkml.kernel.org/r/1366980611.32469.7.camel@fli24-HP-Compaq-8100-Elite-CMT-PC Cc: <stable@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> --- arch/x86/kernel/irq.c | 4 ---- 1 file changed, 4 deletions(-)
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c index d44f782..e62cf16 100644 --- a/arch/x86/kernel/irq.c +++ b/arch/x86/kernel/irq.c @@ -165,10 +165,6 @@ u64 arch_irq_stat_cpu(unsigned int cpu) u64 arch_irq_stat(void) { u64 sum = atomic_read(&irq_err_count); - -#ifdef CONFIG_X86_IO_APIC - sum += atomic_read(&irq_mis_count); -#endif return sum; } -- 1.7.10.4
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