linux-kernel - [PATCH 2/3] Added arch_show_interrupts_cpu to display CPU specific interrupts for Proc Fs

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Message-Id: <1334677205-2623-2-git-send-email-sasikanth.v19@gmail.com>
Date:	Tue, 17 Apr 2012 21:10:04 +0530
From:	Sasikantha babu <sasikanth.v19@...il.com>
To:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Daniel Lezcano <daniel.lezcano@...e.fr>
Cc:	Kevin Tian <kevin.tian@...el.com>,
	Fengzhe Zhang <fengzhe.zhang@...el.com>,
	Fernando Luis Vazquez Cao <fernando@....ntt.co.jp>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Marc Zyngier <marc.zyngier@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mike Frysinger <vapier@...too.org>,
	linux-kernel@...r.kernel.org, x86@...nel.org,
	Sasikantha babu <sasikanth.v19@...il.com>
Subject: [PATCH 2/3] Added arch_show_interrupts_cpu to display CPU specific interrupts for Proc Fs


Signed-off-by: Sasikantha babu <sasikanth.v19@...il.com>
---
 arch/x86/kernel/irq.c     |   70 +++++++++++++++++++++++++++++++++++++++++++++
 include/linux/interrupt.h |    1 +
 2 files changed, 71 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 3dafc60..cf64546 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -128,6 +128,76 @@ int arch_show_interrupts(struct seq_file *p, int prec)
 	return 0;
 }
 
+
+/*
+ * /proc/cpu/<node>/interrupts printing for CPU and arch  specific interrupts
+ * XXX: Could not figure out a way to re-use arch_show_interrupts
+ */
+int arch_show_interrupts_cpu (struct seq_file *p, int prec, int cpu)
+{
+	int j = cpu;
+
+	seq_printf(p, "%*s: ", prec, "NMI");
+	seq_printf(p, "%10u ", irq_stats(j)->__nmi_count);
+	seq_printf(p, "  Non-maskable interrupts\n");
+#ifdef CONFIG_X86_LOCAL_APIC
+	seq_printf(p, "%*s: ", prec, "LOC");
+	seq_printf(p, "%10u ", irq_stats(j)->apic_timer_irqs);
+	seq_printf(p, "  Local timer interrupts\n");
+
+	seq_printf(p, "%*s: ", prec, "SPU");
+	seq_printf(p, "%10u ", irq_stats(j)->irq_spurious_count);
+	seq_printf(p, "  Spurious interrupts\n");
+	seq_printf(p, "%*s: ", prec, "PMI");
+	seq_printf(p, "%10u ", irq_stats(j)->apic_perf_irqs);
+	seq_printf(p, "  Performance monitoring interrupts\n");
+	seq_printf(p, "%*s: ", prec, "IWI");
+	seq_printf(p, "%10u ", irq_stats(j)->apic_irq_work_irqs);
+	seq_printf(p, "  IRQ work interrupts\n");
+	seq_printf(p, "%*s: ", prec, "RTR");
+	seq_printf(p, "%10u ", irq_stats(j)->icr_read_retry_count);
+	seq_printf(p, "  APIC ICR read retries\n");
+#endif
+	if (x86_platform_ipi_callback) {
+		seq_printf(p, "%*s: ", prec, "PLT");
+		seq_printf(p, "%10u ", irq_stats(j)->x86_platform_ipis);
+		seq_printf(p, "  Platform interrupts\n");
+	}
+#ifdef CONFIG_SMP
+	seq_printf(p, "%*s: ", prec, "RES");
+	seq_printf(p, "%10u ", irq_stats(j)->irq_resched_count);
+	seq_printf(p, "  Rescheduling interrupts\n");
+	seq_printf(p, "%*s: ", prec, "CAL");
+	seq_printf(p, "%10u ", irq_stats(j)->irq_call_count);
+	seq_printf(p, "  Function call interrupts\n");
+	seq_printf(p, "%*s: ", prec, "TLB");
+	seq_printf(p, "%10u ", irq_stats(j)->irq_tlb_count);
+	seq_printf(p, "  TLB shootdowns\n");
+#endif
+#ifdef CONFIG_X86_THERMAL_VECTOR
+	seq_printf(p, "%*s: ", prec, "TRM");
+	seq_printf(p, "%10u ", irq_stats(j)->irq_thermal_count);
+	seq_printf(p, "  Thermal event interrupts\n");
+#endif
+#ifdef CONFIG_X86_MCE_THRESHOLD
+	seq_printf(p, "%*s: ", prec, "THR");
+	seq_printf(p, "%10u ", irq_stats(j)->irq_threshold_count);
+	seq_printf(p, "  Threshold APIC interrupts\n");
+#endif
+#ifdef CONFIG_X86_MCE
+	seq_printf(p, "%*s: ", prec, "MCE");
+	seq_printf(p, "%10u ", per_cpu(mce_exception_count, j));
+	seq_printf(p, "  Machine check exceptions\n");
+	seq_printf(p, "%*s: ", prec, "MCP");
+	seq_printf(p, "%10u ", per_cpu(mce_poll_count, j));
+	seq_printf(p, "  Machine check polls\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));
+#endif
+	return 0;
+}
 /*
  * /proc/stat helpers
  */
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 2aea5d2..27e15cc 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -695,6 +695,7 @@ static inline void init_irq_proc(void)
 struct seq_file;
 int show_interrupts(struct seq_file *p, void *v);
 int arch_show_interrupts(struct seq_file *p, int prec);
+int arch_show_interrupts_cpu(struct seq_file *p, int prec, int cpu);
 
 extern int early_irq_init(void);
 extern int arch_probe_nr_irqs(void);
-- 
1.7.3.4

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