Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753735Ab0ASCet (ORCPT ); Mon, 18 Jan 2010 21:34:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753456Ab0ASCer (ORCPT ); Mon, 18 Jan 2010 21:34:47 -0500 Received: from mx1.redhat.com ([209.132.183.28]:34771 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753320Ab0ASCep (ORCPT ); Mon, 18 Jan 2010 21:34:45 -0500 From: Masami Hiramatsu Subject: [PATCH -tip 1/2] kprobetrace, doc: shell need single quote to use $ character To: Ingo Molnar , lkml Cc: systemtap , DLE , KOSAKI Motohiro , Masami Hiramatsu Date: Mon, 18 Jan 2010 21:35:05 -0500 Message-ID: <20100119023505.31880.17367.stgit@localhost6.localdomain6> In-Reply-To: <20100117071411.GD19512@elte.hu> References: <20100117071411.GD19512@elte.hu> User-Agent: StGIT/0.14.3 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1815 Lines: 40 From: Motohiro KOSAKI shell interpret $val is as shell variable. thus we need quote if we use echo command. Signed-off-by: KOSAKI Motohiro Signed-off-by: Masami Hiramatsu --- Documentation/trace/kprobetrace.txt | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/trace/kprobetrace.txt b/Documentation/trace/kprobetrace.txt index f30978e..ab57f02 100644 --- a/Documentation/trace/kprobetrace.txt +++ b/Documentation/trace/kprobetrace.txt @@ -79,7 +79,7 @@ Usage examples To add a probe as a new event, write a new definition to kprobe_events as below. - echo p:myprobe do_sys_open dfd=%ax filename=%dx flags=%cx mode=+4($stack) > /sys/kernel/debug/tracing/kprobe_events + echo 'p:myprobe do_sys_open dfd=%ax filename=%dx flags=%cx mode=+4($stack)' > /sys/kernel/debug/tracing/kprobe_events This sets a kprobe on the top of do_sys_open() function with recording 1st to 4th arguments as "myprobe" event. Note, which register/stack entry is @@ -88,7 +88,7 @@ the ABI, please try to use probe subcommand of perf-tools (you can find it under tools/perf/). As this example shows, users can choose more familiar names for each arguments. - echo r:myretprobe do_sys_open $retval >> /sys/kernel/debug/tracing/kprobe_events + echo 'r:myretprobe do_sys_open $retval' >> /sys/kernel/debug/tracing/kprobe_events This sets a kretprobe on the return point of do_sys_open() function with recording return value as "myretprobe" event. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/