linux-kernel - [PATCH trace-cmd V5 1/6] trace-cmd: Support -N option for trace-cmd extract

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Date:	Mon, 22 Dec 2014 12:47:43 -0500
From:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Hidehiro Kawai <hidehiro.kawai.ez@...achi.com>,
	yrl.pp-manager.tt@...achi.com,
	Aaron Fabbri <aaronx.j.fabbri@...el.com>,
	linux-kernel@...r.kernel.org, Divya Vyas <edivya.vyas@...il.com>
Subject: [PATCH trace-cmd V5 1/6] trace-cmd: Support -N option for trace-cmd
 extract

There is no reason to prohibit supporting -N command in extract
mode, since both record and extract read trace logs from ftrace
and save it.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
---
 trace-record.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/trace-record.c b/trace-record.c
index 3e5def2..a3a07e1 100644
--- a/trace-record.c
+++ b/trace-record.c
@@ -390,6 +390,7 @@ static void stop_threads(void)
 	}
 }
 
+static void setup_network(void);
 static int create_recorder(struct buffer_instance *instance, int cpu, int extract);
 
 static void flush_threads(void)
@@ -400,6 +401,9 @@ static void flush_threads(void)
 	if (!cpu_count)
 		return;
 
+	if (host)
+		setup_network();
+
 	for (i = 0; i < cpu_count; i++) {
 		/* Extract doesn't support sub buffers yet */
 		ret = create_recorder(&top_instance, i, 1);
@@ -2987,8 +2991,8 @@ void trace_record (int argc, char **argv)
 			rt_prio = atoi(optarg);
 			break;
 		case 'N':
-			if (!record)
-				die("-N only available with record");
+			if (!record && !extract)
+				die("-N only available with record or extract");
 			if (output)
 				die("-N incompatible with -o");
 			host = optarg;


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