From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759705Ab3HOTtr (ORCPT ); Thu, 15 Aug 2013 15:49:47 -0400 Received: from terminus.zytor.com ([198.137.202.10]:59197 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756785Ab3HOTtp (ORCPT ); Thu, 15 Aug 2013 15:49:45 -0400 Date: Thu, 15 Aug 2013 12:48:47 -0700 From: tip-bot for Oleg Nesterov Message-ID: Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@kernel.org, peterz@infradead.org, rostedt@goodmis.org, dsahern@gmail.com, tglx@linutronix.de, oleg@redhat.com Reply-To: mingo@kernel.org, hpa@zytor.com, linux-kernel@vger.kernel.org, peterz@infradead.org, rostedt@goodmis.org, dsahern@gmail.com, tglx@linutronix.de, oleg@redhat.com In-Reply-To: <20130806160841.GA2736@redhat.com> References: <20130806160841.GA2736@redhat.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] tracing/perf: Expand TRACE_EVENT( sched_stat_runtime) Git-Commit-ID: 36009d07b79d2a168d6037947357d96e5d8cebe7 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (terminus.zytor.com [127.0.0.1]); Thu, 15 Aug 2013 12:48:54 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 36009d07b79d2a168d6037947357d96e5d8cebe7 Gitweb: http://git.kernel.org/tip/36009d07b79d2a168d6037947357d96e5d8cebe7 Author: Oleg Nesterov AuthorDate: Tue, 6 Aug 2013 18:08:41 +0200 Committer: Steven Rostedt CommitDate: Tue, 13 Aug 2013 21:05:12 -0400 tracing/perf: Expand TRACE_EVENT(sched_stat_runtime) To simplify the review of the next patches: 1. We are going to reimplent __perf_task/counter and embedd them into TP_ARGS(). expand TRACE_EVENT(sched_stat_runtime) into DECLARE_EVENT_CLASS() + DEFINE_EVENT(), this way they can use different TP_ARGS's. 2. Change perf_trace_##call() macro to do perf_fetch_caller_regs() right before perf_trace_buf_prepare(). This way it evaluates TP_ARGS() asap, the next patch explores this fact. Note: after 87f44bbc perf_trace_buf_prepare() doesn't need "struct pt_regs *regs", perhaps it makes sense to remove this argument. And perhaps we can teach perf_trace_buf_submit() to accept regs == NULL and do fetch_caller_regs(CALLER_ADDR1) in this case. 3. Cosmetic, but the typecast from "void*" buys nothing. It just adds the noise, remove it. Link: http://lkml.kernel.org/r/20130806160841.GA2736@redhat.com Acked-by: Peter Zijlstra Tested-by: David Ahern Signed-off-by: Oleg Nesterov Signed-off-by: Steven Rostedt --- include/trace/events/sched.h | 6 +++++- include/trace/ftrace.h | 7 +++---- 2 files changed, 8 insertions(+), 5 deletions(-) diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h index e5586ca..249c024 100644 --- a/include/trace/events/sched.h +++ b/include/trace/events/sched.h @@ -372,7 +372,7 @@ DEFINE_EVENT(sched_stat_template, sched_stat_blocked, * Tracepoint for accounting runtime (time the task is executing * on a CPU). */ -TRACE_EVENT(sched_stat_runtime, +DECLARE_EVENT_CLASS(sched_stat_runtime, TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime), @@ -401,6 +401,10 @@ TRACE_EVENT(sched_stat_runtime, (unsigned long long)__entry->vruntime) ); +DEFINE_EVENT(sched_stat_runtime, sched_stat_runtime, + TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime), + TP_ARGS(tsk, runtime, vruntime)); + /* * Tracepoint for showing priority inheritance modifying a tasks * priority. diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h index 41a6643..618af05 100644 --- a/include/trace/ftrace.h +++ b/include/trace/ftrace.h @@ -663,15 +663,14 @@ perf_trace_##call(void *__data, proto) \ int __data_size; \ int rctx; \ \ - perf_fetch_caller_regs(&__regs); \ - \ __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \ __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\ sizeof(u64)); \ __entry_size -= sizeof(u32); \ \ - entry = (struct ftrace_raw_##call *)perf_trace_buf_prepare( \ - __entry_size, event_call->event.type, &__regs, &rctx); \ + perf_fetch_caller_regs(&__regs); \ + entry = perf_trace_buf_prepare(__entry_size, \ + event_call->event.type, &__regs, &rctx); \ if (!entry) \ return; \ \