* [PATCH] docs: ftrace: fix the wrong path of tracefs
@ 2021-11-13 13:37 Zhaoyu Liu
2021-11-13 14:11 ` Steven Rostedt
0 siblings, 1 reply; 3+ messages in thread
From: Zhaoyu Liu @ 2021-11-13 13:37 UTC (permalink / raw)
To: corbet, rostedt, mingo; +Cc: linux-doc, linux-kernel
Delete "tracing" due to it has been included in /proc/mounts.
Delete "echo nop > $tracefs/tracing/current_tracer", maybe
this command is redundant.
Signed-off-by: Zhaoyu Liu <zackary.liu.pro@gmail.com>
---
Documentation/trace/ftrace.rst | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/Documentation/trace/ftrace.rst b/Documentation/trace/ftrace.rst
index 4e5b26f03d5b..b3166c4a7867 100644
--- a/Documentation/trace/ftrace.rst
+++ b/Documentation/trace/ftrace.rst
@@ -2442,11 +2442,10 @@ Or this simple script!
#!/bin/bash
tracefs=`sed -ne 's/^tracefs \(.*\) tracefs.*/\1/p' /proc/mounts`
- echo nop > $tracefs/tracing/current_tracer
- echo 0 > $tracefs/tracing/tracing_on
- echo $$ > $tracefs/tracing/set_ftrace_pid
- echo function > $tracefs/tracing/current_tracer
- echo 1 > $tracefs/tracing/tracing_on
+ echo 0 > $tracefs/tracing_on
+ echo $$ > $tracefs/set_ftrace_pid
+ echo function > $tracefs/current_tracer
+ echo 1 > $tracefs/tracing_on
exec "$@"
--
2.17.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] docs: ftrace: fix the wrong path of tracefs
2021-11-13 13:37 [PATCH] docs: ftrace: fix the wrong path of tracefs Zhaoyu Liu
@ 2021-11-13 14:11 ` Steven Rostedt
2021-11-15 9:51 ` Jonathan Corbet
0 siblings, 1 reply; 3+ messages in thread
From: Steven Rostedt @ 2021-11-13 14:11 UTC (permalink / raw)
To: Zhaoyu Liu; +Cc: corbet, mingo, linux-doc, linux-kernel
On Sat, 13 Nov 2021 21:37:34 +0800
Zhaoyu Liu <zackary.liu.pro@gmail.com> wrote:
> Delete "tracing" due to it has been included in /proc/mounts.
> Delete "echo nop > $tracefs/tracing/current_tracer", maybe
> this command is redundant.
>
> Signed-off-by: Zhaoyu Liu <zackary.liu.pro@gmail.com>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Jon,
Can you take this through your tree?
Thanks,
-- Steve
> ---
> Documentation/trace/ftrace.rst | 9 ++++-----
> 1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/Documentation/trace/ftrace.rst b/Documentation/trace/ftrace.rst
> index 4e5b26f03d5b..b3166c4a7867 100644
> --- a/Documentation/trace/ftrace.rst
> +++ b/Documentation/trace/ftrace.rst
> @@ -2442,11 +2442,10 @@ Or this simple script!
> #!/bin/bash
>
> tracefs=`sed -ne 's/^tracefs \(.*\) tracefs.*/\1/p' /proc/mounts`
> - echo nop > $tracefs/tracing/current_tracer
> - echo 0 > $tracefs/tracing/tracing_on
> - echo $$ > $tracefs/tracing/set_ftrace_pid
> - echo function > $tracefs/tracing/current_tracer
> - echo 1 > $tracefs/tracing/tracing_on
> + echo 0 > $tracefs/tracing_on
> + echo $$ > $tracefs/set_ftrace_pid
> + echo function > $tracefs/current_tracer
> + echo 1 > $tracefs/tracing_on
> exec "$@"
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] docs: ftrace: fix the wrong path of tracefs
2021-11-13 14:11 ` Steven Rostedt
@ 2021-11-15 9:51 ` Jonathan Corbet
0 siblings, 0 replies; 3+ messages in thread
From: Jonathan Corbet @ 2021-11-15 9:51 UTC (permalink / raw)
To: Steven Rostedt, Zhaoyu Liu; +Cc: mingo, linux-doc, linux-kernel
Steven Rostedt <rostedt@goodmis.org> writes:
> On Sat, 13 Nov 2021 21:37:34 +0800
> Zhaoyu Liu <zackary.liu.pro@gmail.com> wrote:
>
>> Delete "tracing" due to it has been included in /proc/mounts.
>> Delete "echo nop > $tracefs/tracing/current_tracer", maybe
>> this command is redundant.
>>
>> Signed-off-by: Zhaoyu Liu <zackary.liu.pro@gmail.com>
>
> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
>
> Jon,
>
> Can you take this through your tree?
Applied, thanks.
jon
^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-11-13 13:37 [PATCH] docs: ftrace: fix the wrong path of tracefs Zhaoyu Liu
2021-11-13 14:11 ` Steven Rostedt
2021-11-15 9:51 ` Jonathan Corbet
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