Commit-ID: 929320e4b4c10708d3477d7e395f0ce7b0cc8744
Gitweb: http://git.kernel.org/tip/929320e4b4c10708d3477d7e395f0ce7b0cc8744
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Sun, 23 Feb 2014 21:40:20 +0000
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Tue, 4 Mar 2014 17:37:54 +0100
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@xxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Cc: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
Cc: x86 <x86@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/20140223212738.681855582@xxxxxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
arch/x86/include/asm/hardirq.h | 3 +++
arch/x86/kernel/irq.c | 6 ++++++
2 files changed, 9 insertions(+)
diff --git a/arch/x86/include/asm/hardirq.h b/arch/x86/include/asm/hardirq.h
index ab0ae1a..afb6536 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 d99f31d..42805fa 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));
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|