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SubjectRe: [PATCH] ftrace: tracing_on to start/stop tracing
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On Fri, 2011-08-12 at 14:30 +0900, Geunsik Lim wrote:
> From: Geunsik Lim <geunsik.lim@samsung.com>
>
> 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

> Signed-off-by: Geunsik Lim <geunsik.lim@samsung.com>
> ---
> kernel/trace/trace.c | 4 ++--
> 1 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
> index e5df02c..91abdbf 100644
> --- a/kernel/trace/trace.c
> +++ b/kernel/trace/trace.c
> @@ -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




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