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| author |   Thomas Gleixner <tglx@linutronix.de> | 2014-02-23 21:40:20 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2014-03-04 17:37:54 +0100 |
| commit | 929320e4b4c10708d3477d7e395f0ce7b0cc8744 (patch) | |
| tree | 1783dcd848793a99d57242b403d908b705d5985d | |
| parent | ia64: Use the core irq stats function (diff) | |
| download | linux-dev-929320e4b4c10708d3477d7e395f0ce7b0cc8744.tar.xz linux-dev-929320e4b4c10708d3477d7e395f0ce7b0cc8744.zip | |
x86: Add proper vector accounting for HYPERVISOR_CALLBACK_VECTOR
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>
| -rw-r--r-- | arch/x86/include/asm/hardirq.h | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/irq.c | 6 |
2 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/include/asm/hardirq.h b/arch/x86/include/asm/hardirq.h index ab0ae1aa6d0a..afb6536ee3ac 100644 --- a/arch/x86/include/asm/hardirq.h +++ b/arch/x86/include/asm/hardirq.h @@ -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); diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c index d99f31d9a750..42805fac0092 100644 --- a/arch/x86/kernel/irq.c +++ b/arch/x86/kernel/irq.c @@ -125,6 +125,12 @@ int arch_show_interrupts(struct seq_file *p, int prec) 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) seq_printf(p, "%*s: %10u\n", prec, "MIS", atomic_read(&irq_mis_count)); |