From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752783AbaBWVnu (ORCPT ); Sun, 23 Feb 2014 16:43:50 -0500 Received: from www.linutronix.de ([62.245.132.108]:52311 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752088AbaBWVkL (ORCPT ); Sun, 23 Feb 2014 16:40:11 -0500 Message-Id: <20140223212738.681855582@linutronix.de> User-Agent: quilt/0.60-1 Date: Sun, 23 Feb 2014 21:40:20 -0000 From: Thomas Gleixner To: LKML Cc: Ingo Molnar , Peter Zijlstra , x86 , Konrad Rzeszutek Wilk , "K. Y. Srinivasan" Subject: [patch 22/26] x86: Add proper vector accounting for HyperV References: <20140223212703.511977310@linutronix.de> Content-Disposition: inline; filename=x86-add-a-proper-vector-accounting.patch X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 Cc: x86 Cc: Konrad Rzeszutek Wilk Cc: "K. Y. Srinivasan" --- arch/x86/include/asm/hardirq.h | 3 +++ arch/x86/kernel/irq.c | 6 ++++++ 2 files changed, 9 insertions(+) Index: tip/arch/x86/include/asm/hardirq.h =================================================================== --- tip.orig/arch/x86/include/asm/hardirq.h +++ tip/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); Index: tip/arch/x86/kernel/irq.c =================================================================== --- tip.orig/arch/x86/kernel/irq.c +++ tip/arch/x86/kernel/irq.c @@ -125,6 +125,12 @@ int arch_show_interrupts(struct seq_file 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));