Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752121Ab0LVBK2 (ORCPT ); Tue, 21 Dec 2010 20:10:28 -0500 Received: from smtp-out.google.com ([216.239.44.51]:56129 "EHLO smtp-out.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751774Ab0LVBKY (ORCPT ); Tue, 21 Dec 2010 20:10:24 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=google.com; s=beta; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; b=MGk81+ZSA0COQoSjqHRdxu0//uMIufKKCM5fdFsK7pd+X9sGJUbdsyPCCkooKT+M+1 Ou9ybMFunWV5iSOSVhLQ== From: Venkatesh Pallipadi To: Peter Zijlstra , Ingo Molnar , "H. Peter Anvin" , Thomas Gleixner , Balbir Singh , Martin Schwidefsky Cc: linux-kernel@vger.kernel.org, Paul Turner , Eric Dumazet , Shaun Ruffell , Venkatesh Pallipadi Subject: [PATCH 5/5] Account ksoftirqd time as cpustat softirq -v2 Date: Tue, 21 Dec 2010 17:09:04 -0800 Message-Id: <1292980144-28796-6-git-send-email-venki@google.com> X-Mailer: git-send-email 1.7.3.1 In-Reply-To: <1292980144-28796-1-git-send-email-venki@google.com> References: <1292980144-28796-1-git-send-email-venki@google.com> X-System-Of-Record: true Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1455 Lines: 39 softirq time in ksoftirqd context is not accounted in ns granularity per cpu softirq stats, as we want that to be a part of ksoftirqd exec_runtime. Accounting them as softirq on /proc/stat separately. Tested-by: Shaun Ruffell Signed-off-by: Venkatesh Pallipadi --- kernel/sched.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/kernel/sched.c b/kernel/sched.c index 193b1d0..4ff6d1a 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -3819,6 +3819,14 @@ static void irqtime_account_process_tick(struct task_struct *p, int user_tick, cpustat->irq = cputime64_add(cpustat->irq, tmp); } else if (irqtime_account_si_update()) { cpustat->softirq = cputime64_add(cpustat->softirq, tmp); + } else if (this_cpu_ksoftirqd() == p) { + /* + * ksoftirqd time do not get accounted in cpu_softirq_time. + * So, we have to handle it separately here. + * Also, p->stime needs to be updated for ksoftirqd. + */ + __account_system_time(p, cputime_one_jiffy, one_jiffy_scaled, + &cpustat->softirq); } else if (user_tick) { account_user_time(p, cputime_one_jiffy, one_jiffy_scaled); } else if (p == rq->idle) { -- 1.7.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/