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ftrace: tracing_on to start/stop tracing

PATCH In review Geunsik Lim 2 participants 2 messages Aug 12, 2011 Tracing

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Geunsik Lim

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PATCH 1/1 ftrace: tracing_on to start/stop tracing

From: Geunsik Lim <[email protected]>

tracing_enabled option is deprecated.
To start/stop tracing, write to /sys/kernel/debug/tracing/tracing_on without tracing_enabled. This patch is based on Linux 3.1.0-rc1

Signed-off-by Geunsik Lim <[email protected]>
---
 kernel/trace/trace.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
kernel/trace/trace.c +2 -2
index e5df02c..91abdbf 100644
@@ -2710,9 +2710,9 @@ static const char readme_msg[] =
 	"# cat /sys/kernel/debug/tracing/trace_options\n"
 	"noprint-parent nosym-offset nosym-addr noverbose\n"
 	"# echo print-parent > /sys/kernel/debug/tracing/trace_options\n"
-	"# echo 1 > /sys/kernel/debug/tracing/tracing_enabled\n"
+	"# echo 1 > /sys/kernel/debug/tracing/tracing_on\n"
 	"# cat /sys/kernel/debug/tracing/trace > /tmp/trace.txt\n"
-	"# echo 0 > /sys/kernel/debug/tracing/tracing_enabled\n"
+	"# echo 0 > /sys/kernel/debug/tracing/tracing_on\n"
 ;
 
 static ssize_t
Signature · 1 line
1.7.3.4
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#1 lore raw
Quoted 6 lines · Geunsik Lim

From: Geunsik Lim <[email protected]>

tracing_enabled option is deprecated.
To start/stop tracing, write to /sys/kernel/debug/tracing/tracing_on without tracing_enabled. This patch is based on Linux 3.1.0-rc1

Ug, I thought I fixed this. OK, thanks. Maybe we can add this to 3.1, as it is a very low risk patch and fixes something that can confuse people.

-- Steve

Quoted 21 lines
Signed-off-by Geunsik Lim <[email protected]>
---
 kernel/trace/trace.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
kernel/trace/trace.c +2 -2
index e5df02c..91abdbf 100644
@@ -2710,9 +2710,9 @@ static const char readme_msg[] =
 	"# cat /sys/kernel/debug/tracing/trace_options\n"
 	"noprint-parent nosym-offset nosym-addr noverbose\n"
 	"# echo print-parent > /sys/kernel/debug/tracing/trace_options\n"
-	"# echo 1 > /sys/kernel/debug/tracing/tracing_enabled\n"
+	"# echo 1 > /sys/kernel/debug/tracing/tracing_on\n"
 	"# cat /sys/kernel/debug/tracing/trace > /tmp/trace.txt\n"
-	"# echo 0 > /sys/kernel/debug/tracing/tracing_enabled\n"
+	"# echo 0 > /sys/kernel/debug/tracing/tracing_on\n"
 ;
 
 static ssize_t