x86: Add proper vector accounting for HYPERVISOR_CALLBACK_VECTOR (929320e4) · Commits · 戴 / test

HyperV abuses a device interrupt to account for the HYPERVISOR_CALLBACK_VECTOR. Provide proper accounting as we have for the other vectors as well. Signed-off-by:

Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: K. Y. Srinivasan <kys@microsoft.com> Cc: x86 <x86@kernel.org> Link: http://lkml.kernel.org/r/20140223212738.681855582@linutronix.de Signed-off-by:

Thomas Gleixner <tglx@linutronix.de>

arch/x86/include/asm/hardirq.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -33,6 +33,9 @@ typedef struct {
		#ifdef CONFIG_X86_MCE_THRESHOLD
		unsigned int irq_threshold_count;
		#endif
		#if defined(CONFIG_HYPERV) \|\| defined(CONFIG_XEN)
		unsigned int irq_hv_callback_count;
		#endif
		} ____cacheline_aligned irq_cpustat_t;

		DECLARE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat);

arch/x86/kernel/irq.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -124,6 +124,12 @@ int arch_show_interrupts(struct seq_file *p, int prec)
		for_each_online_cpu(j)
		seq_printf(p, "%10u ", per_cpu(mce_poll_count, j));
		seq_printf(p, " Machine check polls\n");
		#endif
		#if defined(CONFIG_HYPERV) \|\| defined(CONFIG_XEN)
		seq_printf(p, "%*s: ", prec, "THR");
		for_each_online_cpu(j)
		seq_printf(p, "%10u ", irq_stats(j)->irq_hv_callback_count);
		seq_printf(p, " Hypervisor callback interrupts\n");
		#endif
		seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
		#if defined(CONFIG_X86_IO_APIC)

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