From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755310AbcHWVvb (ORCPT ); Tue, 23 Aug 2016 17:51:31 -0400 Received: from merlin.infradead.org ([205.233.59.134]:53652 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932759AbcHWVts (ORCPT ); Tue, 23 Aug 2016 17:49:48 -0400 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Masami Hiramatsu , Alexander Shishkin , Hemant Kumar , Naohiro Aota , Peter Zijlstra , Wang Nan , Arnaldo Carvalho de Melo Subject: [PATCH 27/35] ftrace: probe: Add README entries for k/uprobe-events Date: Tue, 23 Aug 2016 18:03:28 -0300 Message-Id: <1471986216-18390-28-git-send-email-acme@kernel.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1471986216-18390-1-git-send-email-acme@kernel.org> References: <1471986216-18390-1-git-send-email-acme@kernel.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by merlin.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Masami Hiramatsu Add README entries for kprobe-events and uprobe-events. This allows user to check what options can be acceptable for running kernel. E.g. perf tools can choose correct types for the kernel. Signed-off-by: Masami Hiramatsu Acked-by: Steven Rostedt Cc: Alexander Shishkin Cc: Hemant Kumar Cc: Naohiro Aota Cc: Peter Zijlstra Cc: Wang Nan Link: http://lkml.kernel.org/r/147151069524.12957.12957179170304055028.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo --- kernel/trace/trace.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index dade4c9559cc..1e2ce3b52e51 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -4123,6 +4123,30 @@ static const char readme_msg[] = "\t\t\t traces\n" #endif #endif /* CONFIG_STACK_TRACER */ +#ifdef CONFIG_KPROBE_EVENT + " kprobe_events\t\t- Add/remove/show the kernel dynamic events\n" + "\t\t\t Write into this file to define/undefine new trace events.\n" +#endif +#ifdef CONFIG_UPROBE_EVENT + " uprobe_events\t\t- Add/remove/show the userspace dynamic events\n" + "\t\t\t Write into this file to define/undefine new trace events.\n" +#endif +#if defined(CONFIG_KPROBE_EVENT) || defined(CONFIG_UPROBE_EVENT) + "\t accepts: event-definitions (one definition per line)\n" + "\t Format: p|r[:[/]] []\n" + "\t -:[/]\n" +#ifdef CONFIG_KPROBE_EVENT + "\t place: [:][+]|\n" +#endif +#ifdef CONFIG_UPROBE_EVENT + "\t place: :\n" +#endif + "\t args: =fetcharg[:type]\n" + "\t fetcharg: %, @
, @[+|-],\n" + "\t $stack, $stack, $retval, $comm\n" + "\t type: s8/16/32/64, u8/16/32/64, x8/16/32/64, string,\n" + "\t b@/\n" +#endif " events/\t\t- Directory containing all trace event subsystems:\n" " enable\t\t- Write 0/1 to enable/disable tracing of all events\n" " events//\t- Directory containing all trace events for :\n" -- 2.7.4