Re: [PATCH] add input subsystem instrumentation

Mathieu Desnoyers <[email protected]> Thu, 1 Nov 2007 22:28:53 -0400
Newsgroups gmane.linux.kernel.tracing
Message-ID <20071102022853.GA29356@Krystal>
merged.

* Pierre-Marc Fournier ([email protected]) wrote:
> Allows tracing of all input events that pass through the input subsystem.
> 
> Signed-off-by: Pierre-Marc Fournier <[email protected]>
> ---
>  drivers/input/input.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/input/input.c b/drivers/input/input.c
> index 5fe7555..c02632d 100644
> --- a/drivers/input/input.c
> +++ b/drivers/input/input.c
> @@ -50,6 +50,8 @@ void input_event(struct input_dev *dev, unsigned int type, unsigned int code, in
>  	if (type > EV_MAX || !test_bit(type, dev->evbit))
>  		return;
>  
> +	trace_mark(input_event, "type %u code %u value %d", type, code, value);
> +
>  	add_input_randomness(type, code, value);
>  
>  	switch (type) {
> -- 
> 1.5.3.4
> 

-- 
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68