Commit f7b0e105 authored Apr 26, 2013 by Li Fei Committed by Ingo Molnar Apr 30, 2013

x86: Eliminate irq_mis_count counted in arch_irq_stat



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>

parent c1be5a5b

arch/x86/kernel/irq.c

+0 −4

Original line number	Diff line number	Diff line
		@@ -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;
		}

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