Change the default threshold for osnoise to 1us, so that any noise equal or above this value is recorded. Let the user set a higher threshold if necessary.
Suggested-by: Daniel Bristot de Oliveira <[email protected]> Reviewed-by: Clark Williams <[email protected]> Signed-off-by: Luis Claudio R. Goncalves <[email protected]> --- Documentation/trace/osnoise-tracer.rst | 2 +- kernel/trace/trace_osnoise.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/Documentation/trace/osnoise-tracer.rst b/Documentation/trace/osnoise-tracer.rst index 140ef2533d26a..a520adbd34765 100644 --- a/Documentation/trace/osnoise-tracer.rst +++ b/Documentation/trace/osnoise-tracer.rst @@ -108,7 +108,7 @@ The tracer has a set of options inside the osnoise directory, they are: option. - tracing_threshold: the minimum delta between two time() reads to be considered as noise, in us. When set to 0, the default value will - be used, which is currently 5 us. + be used, which is currently 1 us. - osnoise/options: a set of on/off options that can be enabled by writing the option name to the file or disabled by writing the option name preceded with the 'NO\_' prefix. For example, writing diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c index a8e28f9b9271c..66a871553d4a1 100644 --- a/kernel/trace/trace_osnoise.c +++ b/kernel/trace/trace_osnoise.c @@ -1444,9 +1444,9 @@ static int run_osnoise(void) save_osn_sample_stats(osn_var, &s); /* - * if threshold is 0, use the default value of 5 us. + * if threshold is 0, use the default value of 1 us. */ - threshold = tracing_thresh ? : 5000; + threshold = tracing_thresh ? : 1000; /* * Apply PREEMPT and IRQ disabled options. -- 2.45.2
