Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932942AbdDQIkN (ORCPT ); Mon, 17 Apr 2017 04:40:13 -0400 Received: from terminus.zytor.com ([65.50.211.136]:42079 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932428AbdDQIkJ (ORCPT ); Mon, 17 Apr 2017 04:40:09 -0400 Date: Mon, 17 Apr 2017 01:34:52 -0700 From: tip-bot for Ravi Bangoria Message-ID: Cc: ravi.bangoria@linux.vnet.ibm.com, mingo@kernel.org, linux-kernel@vger.kernel.org, alexis.berlemont@gmail.com, acme@redhat.com, tglx@linutronix.de, peterz@infradead.org, alexander.shishkin@linux.intel.com, hpa@zytor.com Reply-To: mingo@kernel.org, linux-kernel@vger.kernel.org, ravi.bangoria@linux.vnet.ibm.com, alexis.berlemont@gmail.com, acme@redhat.com, tglx@linutronix.de, peterz@infradead.org, alexander.shishkin@linux.intel.com, hpa@zytor.com In-Reply-To: <1492063332-5745-1-git-send-email-ravi.bangoria@linux.vnet.ibm.com> References: <1492063332-5745-1-git-send-email-ravi.bangoria@linux.vnet.ibm.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] perf trace: Add usage of --no-syscalls in man page Git-Commit-ID: 739cf305512cb852e852099f9e12dd66bf4df076 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 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2553 Lines: 55 Commit-ID: 739cf305512cb852e852099f9e12dd66bf4df076 Gitweb: http://git.kernel.org/tip/739cf305512cb852e852099f9e12dd66bf4df076 Author: Ravi Bangoria AuthorDate: Thu, 13 Apr 2017 11:32:12 +0530 Committer: Arnaldo Carvalho de Melo CommitDate: Thu, 13 Apr 2017 10:54:04 -0300 perf trace: Add usage of --no-syscalls in man page perf trace supports --no-syscalls option but it's not listed in the man page. (Though, I see an example using --no-syscalls in EXAMPLES section.) Committer note: The --no-syscalls option tells 'perf trace' not to automagically ask for raw_syscalls:sys_{enter,exit} to then format it in a strace like way. This become more used as 'perf trace' got support for arbitrary events, such as tracepoints, so more and more we use: # perf trace --no-syscalls -e nmi:* 0.000 nmi:nmi_handler:perf_event_nmi_handler() delta_ns: 36649 handled: 1) 0.019 nmi:nmi_handler:nmi_cpu_backtrace_handler() delta_ns: 2907 handled: 0) 0.676 nmi:nmi_handler:perf_event_nmi_handler() delta_ns: 9401 handled: 1) 0.680 nmi:nmi_handler:nmi_cpu_backtrace_handler() delta_ns: 288 handled: 0) 0.701 nmi:nmi_handler:perf_event_nmi_handler() delta_ns: 4977 handled: 1) 0.703 nmi:nmi_handler:nmi_cpu_backtrace_handler() delta_ns: 67 handled: 0) 0.736 nmi:nmi_handler:perf_event_nmi_handler() delta_ns: 8549 handled: 1) ^C# Signed-off-by: Ravi Bangoria Cc: Alexander Shishkin Cc: Alexis Berlemont Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1492063332-5745-1-git-send-email-ravi.bangoria@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-trace.txt | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/perf/Documentation/perf-trace.txt b/tools/perf/Documentation/perf-trace.txt index afd7286..c1e3288 100644 --- a/tools/perf/Documentation/perf-trace.txt +++ b/tools/perf/Documentation/perf-trace.txt @@ -123,7 +123,8 @@ the thread executes on the designated CPUs. Default is to monitor all CPUs. major or all pagefaults. Default value is maj. --syscalls:: - Trace system calls. This options is enabled by default. + Trace system calls. This options is enabled by default, disable with + --no-syscalls. --call-graph [mode,type,min[,limit],order[,key][,branch]]:: Setup and enable call-graph (stack chain/backtrace) recording.