From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762880AbZCXQZM (ORCPT ); Tue, 24 Mar 2009 12:25:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1762835AbZCXQX5 (ORCPT ); Tue, 24 Mar 2009 12:23:57 -0400 Received: from smtp.polymtl.ca ([132.207.4.11]:40280 "EHLO smtp.polymtl.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1762845AbZCXQXy (ORCPT ); Tue, 24 Mar 2009 12:23:54 -0400 Message-Id: <20090324160148.554127249@polymtl.ca> References: <20090324155625.420966314@polymtl.ca> User-Agent: quilt/0.46-1 Date: Tue, 24 Mar 2009 11:56:30 -0400 From: Mathieu Desnoyers To: akpm@linux-foundation.org, Ingo Molnar , linux-kernel@vger.kernel.org, ltt-dev@lists.casi.polymtl.ca Cc: Mathieu Desnoyers , Frederic Weisbecker , Jason Baron , Peter Zijlstra Subject: [patch 5/9] LTTng instrumentation scheduler fix task migration Content-Disposition: inline; filename=lttng-instrumentation-scheduler-fixup-task-migration.patch X-Poly-FromMTA: (test.casi.polymtl.ca [132.207.72.60]) at Tue, 24 Mar 2009 16:22:03 +0000 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The scheduler migration only needs to pass the task struct pointer and the destination CPU. The source CPU can be found by using task_cpu(p) in the probe. Signed-off-by: Mathieu Desnoyers CC: 'Ingo Molnar' CC: Frederic Weisbecker CC: Jason Baron CC: 'Peter Zijlstra' --- include/trace/sched.h | 4 ++-- kernel/sched.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) Index: linux-2.6-lttng/include/trace/sched.h =================================================================== --- linux-2.6-lttng.orig/include/trace/sched.h 2009-01-30 10:42:51.000000000 -0500 +++ linux-2.6-lttng/include/trace/sched.h 2009-01-30 10:43:19.000000000 -0500 @@ -30,8 +30,8 @@ DECLARE_TRACE(sched_switch, TPARGS(rq, prev, next)); DECLARE_TRACE(sched_migrate_task, - TPPROTO(struct task_struct *p, int orig_cpu, int dest_cpu), - TPARGS(p, orig_cpu, dest_cpu)); + TPPROTO(struct task_struct *p, int dest_cpu), + TPARGS(p, dest_cpu)); DECLARE_TRACE(sched_process_free, TPPROTO(struct task_struct *p), Index: linux-2.6-lttng/kernel/sched.c =================================================================== --- linux-2.6-lttng.orig/kernel/sched.c 2009-01-30 10:43:07.000000000 -0500 +++ linux-2.6-lttng/kernel/sched.c 2009-01-30 10:43:38.000000000 -0500 @@ -1876,7 +1876,7 @@ void set_task_cpu(struct task_struct *p, clock_offset = old_rq->clock - new_rq->clock; - trace_sched_migrate_task(p, task_cpu(p), new_cpu); + trace_sched_migrate_task(p, new_cpu); #ifdef CONFIG_SCHEDSTATS if (p->se.wait_start) -- Mathieu Desnoyers OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68