From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757731Ab0IUClp (ORCPT ); Mon, 20 Sep 2010 22:41:45 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.125]:51901 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755513Ab0IUClk (ORCPT ); Mon, 20 Sep 2010 22:41:40 -0400 X-Authority-Analysis: v=1.1 cv=Ba7GFA6IM/Rlu/bGJ5lftWmk/oljGo5ZwASPcBcXAAo= c=1 sm=0 a=9djwmVDfYk8A:10 a=bbbx4UPp9XUA:10 a=OPBmh+XkhLl+Enan7BmTLg==:17 a=20KFwNOVAAAA:8 a=1nSz6Ew-AAAA:8 a=meVymXHHAAAA:8 a=6dgqTkKu9hYoR1qk6isA:9 a=7pFqqFLHdGiucYmFNxEA:7 a=EHmAdrPUI_iYo3OnE-NEyW1NpboA:4 a=jEp0ucaQiEUA:10 a=nj4rVwXhlm8A:10 a=jeBq3FmKZ4MA:10 a=OPBmh+XkhLl+Enan7BmTLg==:117 X-Cloudmark-Score: 0 X-Originating-IP: 67.242.120.143 Message-Id: <20100921024139.369929073@goodmis.org> User-Agent: quilt/0.48-1 Date: Mon, 20 Sep 2010 22:40:06 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Andrew Morton , Peter Zijlstra , Gregory Haskins , Peter Zijlstra Subject: [PATCH 4/4] tracing/sched: Add sched_rt_setprio tracepoint References: <20100921024002.672817629@goodmis.org> Content-Disposition: inline; filename=0004-tracing-sched-Add-sched_rt_setprio-tracepoint.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Steven Rostedt Add a tracepoint that shows the priority of a task being boosted via priority inheritance. Cc: Peter Zijlstra Cc: Gregory Haskins Signed-off-by: Steven Rostedt --- include/trace/events/sched.h | 25 +++++++++++++++++++++++++ kernel/sched.c | 1 + 2 files changed, 26 insertions(+), 0 deletions(-) diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h index 0e0c108..8feb641 100644 --- a/include/trace/events/sched.h +++ b/include/trace/events/sched.h @@ -398,6 +398,31 @@ DEFINE_EVENT_PRINT(sched_rt_push_pull, sched_rt_pull, __entry->comm, __entry->pid, __entry->prio, __entry->cpu)); +TRACE_EVENT(sched_rt_setprio, + + TP_PROTO(struct task_struct *tsk, int newprio), + + TP_ARGS(tsk, newprio), + + TP_STRUCT__entry( + __array( char, comm, TASK_COMM_LEN ) + __field( pid_t, pid ) + __field( int, oldprio ) + __field( int, newprio ) + ), + + TP_fast_assign( + memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN); + __entry->pid = tsk->pid; + __entry->oldprio = tsk->prio; + __entry->newprio = newprio; + ), + + TP_printk("comm=%s pid=%d oldprio=%d newprio=%d", + __entry->comm, __entry->pid, + __entry->oldprio, __entry->newprio) +); + #endif /* _TRACE_SCHED_H */ /* This part must be outside protection */ diff --git a/kernel/sched.c b/kernel/sched.c index ed09d4f..4d4f35e 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -4358,6 +4358,7 @@ void rt_mutex_setprio(struct task_struct *p, int prio) rq = task_rq_lock(p, &flags); + trace_sched_rt_setprio(p, prio); oldprio = p->prio; prev_class = p->sched_class; on_rq = p->se.on_rq; -- 1.7.1