From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 14140C43387 for ; Tue, 18 Dec 2018 22:13:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CC553217D9 for ; Tue, 18 Dec 2018 22:13:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1545171223; bh=tWUqkLtSA8AyGcHIntArte1OpaL9OV9a/kbrfEhMjfY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=phmJjfekoYbdt7UW3ZQ7ejlp0cik2dwTlYH6bab6Ee+oRQLP1W6PkE0C0l5tI4npB 7EA5k5F7dlH2zJKojD8XjeFP2OrTNyk+00S9H0i9Pq4MAG1aqvSoEhOcjTZJONS/Jf ZMidJzO1jIP3UJHpksOmiL9/52YOyWHokMppJ3J4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727953AbeLRWNm (ORCPT ); Tue, 18 Dec 2018 17:13:42 -0500 Received: from mail.kernel.org ([198.145.29.99]:42690 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726993AbeLRWNk (ORCPT ); Tue, 18 Dec 2018 17:13:40 -0500 Received: from quaco.ghostprotocols.net (unknown [189.40.101.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 163C9217D9; Tue, 18 Dec 2018 22:13:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1545171218; bh=tWUqkLtSA8AyGcHIntArte1OpaL9OV9a/kbrfEhMjfY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ufXXMYZSbUX1bXMyXCQdy/FNt79ruh0vbXGQInKzV8lCcw1RUGfYPycdoIxJkRWeI aaXfFjjAt5Z8FKp2iMqq3KoLgUtw11HB6Ik+Q5ppJRMdWmmtAXW19TIN5lR/UL6i9j 8AzCouA+iIzW10LB12RMboCu2OF2DdDBDzqaYl3U= From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: Clark Williams , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Arnaldo Carvalho de Melo , Adrian Hunter , Jiri Olsa , =?UTF-8?q?Luis=20Cl=C3=A1udio=20Gon=C3=A7alves?= , Namhyung Kim , Wang Nan Subject: [PATCH 41/63] perf trace: Allow suppressing the syscall argument names Date: Tue, 18 Dec 2018 19:07:11 -0300 Message-Id: <20181218220733.15839-42-acme@kernel.org> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20181218220733.15839-1-acme@kernel.org> References: <20181218220733.15839-1-acme@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Arnaldo Carvalho de Melo To show just the values: Default: # trace -e open*,close,*sleep sleep 1 openat(dfd: CWD, filename: /etc/ld.so.cache, flags: CLOEXEC ) = 3 close(fd: 3 ) = 0 openat(dfd: CWD, filename: /lib64/libc.so.6, flags: CLOEXEC ) = 3 close(fd: 3 ) = 0 openat(dfd: CWD, filename: /usr/lib/locale/locale-archive, flags: CLOEXEC) = 3 close(fd: 3 ) = 0 nanosleep(rqtp: 0x7ffc0c4ea0d0, rmtp: 0 ) = 0 close(fd: 1 ) = 0 close(fd: 2 ) = 0 # Remove it: # perf config trace.show_arg_names=no # trace -e open*,close,*sleep sleep 1 openat(CWD, /etc/ld.so.cache, CLOEXEC ) = 3 close(3 ) = 0 openat(CWD, /lib64/libc.so.6, CLOEXEC ) = 3 close(3 ) = 0 openat(CWD, /usr/lib/locale/locale-archive, CLOEXEC ) = 3 close(3 ) = 0 nanosleep(0x7ffced3a8c40, 0 ) = 0 close(1 ) = 0 close(2 ) = 0 # Cc: Adrian Hunter Cc: Jiri Olsa Cc: Luis Cláudio Gonçalves Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-ta9tbdwgodpw719sr2bjm8eb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-config.txt | 4 ++++ tools/perf/builtin-trace.c | 22 ++++++++++++++++++---- 2 files changed, 22 insertions(+), 4 deletions(-) diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt index ecd1e9514925..35108fd61fa6 100644 --- a/tools/perf/Documentation/perf-config.txt +++ b/tools/perf/Documentation/perf-config.txt @@ -532,6 +532,10 @@ trace.*:: trace.no_inherit:: Do not follow children threads. + trace.show_arg_names:: + Should syscall argument names be printed? If not then trace.show_zeros + will be set. + trace.show_duration:: Show syscall duration. diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index e978ce034863..95dfcb851604 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -130,6 +130,7 @@ struct trace { bool show_tstamp; bool show_duration; bool show_zeros; + bool show_arg_names; bool force; bool vfs_getname; int trace_pgfaults; @@ -1613,8 +1614,11 @@ static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size, sc->arg_fmt[arg.idx].parm)) continue; - printed += scnprintf(bf + printed, size - printed, - "%s%s: ", printed ? ", " : "", field->name); + printed += scnprintf(bf + printed, size - printed, "%s", printed ? ", " : ""); + + if (trace->show_arg_names) + printed += scnprintf(bf + printed, size - printed, "%s: ", field->name); + printed += syscall__scnprintf_val(sc, bf + printed, size - printed, &arg, val); } } else if (IS_ERR(sc->tp_format)) { @@ -3546,12 +3550,21 @@ static int trace__config(const char *var, const char *value, void *arg) trace->show_tstamp = perf_config_bool(var, value); } else if (!strcmp(var, "trace.show_duration")) { trace->show_duration = perf_config_bool(var, value); + } else if (!strcmp(var, "trace.show_arg_names")) { + trace->show_arg_names = perf_config_bool(var, value); + if (!trace->show_arg_names) + trace->show_zeros = true; } else if (!strcmp(var, "trace.show_zeros")) { - trace->show_zeros = perf_config_bool(var, value); + bool new_show_zeros = perf_config_bool(var, value); + if (!trace->show_arg_names && !new_show_zeros) { + pr_warning("trace.show_zeros has to be set when trace.show_arg_names=no\n"); + goto out; + } + trace->show_zeros = new_show_zeros; } else if (!strcmp(var, "trace.no_inherit")) { trace->opts.no_inherit = perf_config_bool(var, value); } - +out: return err; } @@ -3582,6 +3595,7 @@ int cmd_trace(int argc, const char **argv) .show_comm = true, .show_tstamp = true, .show_duration = true, + .show_arg_names = true, .trace_syscalls = false, .kernel_syscallchains = false, .max_stack = UINT_MAX, -- 2.19.2