From: Feng Wu <feng.wu@intel.com>
To: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com
Cc: linux-kernel@vger.kernel.org, jiang.liu@linux.intel.com,
Feng Wu <feng.wu@intel.com>
Subject: [v6 4/4] x86/irq: Show statistics information for posted-interrupts
Date: Tue, 19 May 2015 12:57:34 +0800 [thread overview]
Message-ID: <1432011454-4057-5-git-send-email-feng.wu@intel.com> (raw)
In-Reply-To: <1432011454-4057-1-git-send-email-feng.wu@intel.com>
Show the statistics information for notification event
and wakeup event for posted-interrupt in /proc/interrupts.
Signed-off-by: Feng Wu <feng.wu@intel.com>
---
arch/x86/kernel/irq.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 2ec339a..be466ff 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -136,6 +136,18 @@ int arch_show_interrupts(struct seq_file *p, int prec)
#if defined(CONFIG_X86_IO_APIC)
seq_printf(p, "%*s: %10u\n", prec, "MIS", atomic_read(&irq_mis_count));
#endif
+#ifdef CONFIG_HAVE_KVM
+ seq_printf(p, "%*s: ", prec, "NEV");
+ for_each_online_cpu(j)
+ seq_printf(p, "%10u ", irq_stats(j)->kvm_posted_intr_ipis);
+ seq_puts(p, " Posted-interrupt notification event\n");
+
+ seq_printf(p, "%*s: ", prec, "WEV");
+ for_each_online_cpu(j)
+ seq_printf(p, "%10u ",
+ irq_stats(j)->kvm_posted_intr_wakeup_ipis);
+ seq_puts(p, " Posted-interrupt wakeup event\n");
+#endif
return 0;
}
--
2.1.0
prev parent reply other threads:[~2015-05-19 5:06 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-19 4:57 [v6 0/4] prerequisite changes for VT-d posted-interrupts Feng Wu
2015-05-19 4:57 ` [v6 1/4] genirq: Introduce irq_set_vcpu_affinity() to target an interrupt to a VCPU Feng Wu
2015-05-19 8:25 ` Thomas Gleixner
2015-05-19 4:57 ` [v6 2/4] x86/irq: Implement irq_set_vcpu_affinity for pci_msi_ir_controller Feng Wu
2015-05-19 4:57 ` [v6 3/4] x86/irq: Define a global vector for VT-d Posted-Interrupts Feng Wu
2015-05-19 4:57 ` Feng Wu [this message]
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