From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752507AbZBQFSF (ORCPT ); Tue, 17 Feb 2009 00:18:05 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752925AbZBQFOX (ORCPT ); Tue, 17 Feb 2009 00:14:23 -0500 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.124]:33865 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752193AbZBQFOJ (ORCPT ); Tue, 17 Feb 2009 00:14:09 -0500 Message-Id: <20090217051408.109006651@goodmis.org> References: <20090217051227.957864159@goodmis.org> User-Agent: quilt/0.46-1 Date: Tue, 17 Feb 2009 00:12:42 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Andrew Morton , Peter Zijlstra , Frederic Weisbecker , Arnaldo Carvalho de Melo , Steven Rostedt Subject: [PATCH 15/15] ftrace: add pretty print function for traceon and traceoff hooks Content-Disposition: inline; filename=0015-ftrace-add-pretty-print-function-for-traceon-and-tr.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Steven Rostedt This patch adds a pretty print version of traceon and traceoff output for set_ftrace_filter. # echo 'sys_open:traceon:4' > set_ftrace_filter # cat set_ftrace_filter #### all functions enabled #### sys_open:traceon:count=4 Signed-off-by: Steven Rostedt --- kernel/trace/trace_functions.c | 28 ++++++++++++++++++++++++++++ 1 files changed, 28 insertions(+), 0 deletions(-) diff --git a/kernel/trace/trace_functions.c b/kernel/trace/trace_functions.c index 5c95708..f520aa4 100644 --- a/kernel/trace/trace_functions.c +++ b/kernel/trace/trace_functions.c @@ -267,15 +267,43 @@ ftrace_traceoff(unsigned long ip, unsigned long parent_ip, void **data) tracing_off(); } +static int +ftrace_trace_onoff_print(struct seq_file *m, unsigned long ip, + struct ftrace_hook_ops *ops, void *data); + static struct ftrace_hook_ops traceon_hook_ops = { .func = ftrace_traceon, + .print = ftrace_trace_onoff_print, }; static struct ftrace_hook_ops traceoff_hook_ops = { .func = ftrace_traceoff, + .print = ftrace_trace_onoff_print, }; static int +ftrace_trace_onoff_print(struct seq_file *m, unsigned long ip, + struct ftrace_hook_ops *ops, void *data) +{ + char str[KSYM_SYMBOL_LEN]; + long count = (long)data; + + kallsyms_lookup(ip, NULL, NULL, NULL, str); + seq_printf(m, "%s:", str); + + if (ops == &traceon_hook_ops) + seq_printf(m, "traceon"); + else + seq_printf(m, "traceoff"); + + if (count != -1) + seq_printf(m, ":count=%ld", count); + seq_putc(m, '\n'); + + return 0; +} + +static int ftrace_trace_onoff_unreg(char *glob, char *cmd, char *param) { struct ftrace_hook_ops *ops; -- 1.5.6.5 --