linux-kernel - Re: [PATCH v2 05/11] perf python: Add member access to a number of evsel variables

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Message-ID: <Z89PhsZgHwKhstIC@x1>
Date: Mon, 10 Mar 2025 17:45:58 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Ian Rogers <irogers@...gle.com>
Cc: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Kan Liang <kan.liang@...ux.intel.com>,
	Yicong Yang <yangyicong@...ilicon.com>,
	James Clark <james.clark@...aro.org>,
	"Dr. David Alan Gilbert" <linux@...blig.org>,
	Levi Yun <yeoreum.yun@....com>, Ze Gao <zegao2021@...il.com>,
	Weilin Wang <weilin.wang@...el.com>, Xu Yang <xu.yang_2@....com>,
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
	Howard Chu <howardchu95@...il.com>
Subject: Re: [PATCH v2 05/11] perf python: Add member access to a number of
 evsel variables

On Fri, Feb 28, 2025 at 02:23:02PM -0800, Ian Rogers wrote:
> Most variables are part of the perf_event_attr, so that they may be
> queried and modified.
> 
> Reviewed-by: Howard Chu <howardchu95@...il.com>

Acked-by: Arnaldo Carvalho de Melo <acme@...hat.com>

- Arnaldo

> Signed-off-by: Ian Rogers <irogers@...gle.com>
> ---
>  tools/perf/util/python.c | 23 +++++++++++++++++++++++
>  1 file changed, 23 insertions(+)
> 
> diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
> index 0cf81cfcfafb..b600b6379b4e 100644
> --- a/tools/perf/util/python.c
> +++ b/tools/perf/util/python.c
> @@ -811,6 +811,28 @@ static PyMethodDef pyrf_evsel__methods[] = {
>  	{ .ml_name = NULL, }
>  };
>  
> +#define evsel_member_def(member, ptype, help) \
> +	{ #member, ptype, \
> +	  offsetof(struct pyrf_evsel, evsel.member), \
> +	  0, help }
> +
> +#define evsel_attr_member_def(member, ptype, help) \
> +	{ #member, ptype, \
> +	  offsetof(struct pyrf_evsel, evsel.core.attr.member), \
> +	  0, help }
> +
> +static PyMemberDef pyrf_evsel__members[] = {
> +	evsel_member_def(tracking, T_BOOL, "tracking event."),
> +	evsel_attr_member_def(type, T_UINT, "attribute type."),
> +	evsel_attr_member_def(size, T_UINT, "attribute size."),
> +	evsel_attr_member_def(config, T_ULONGLONG, "attribute config."),
> +	evsel_attr_member_def(sample_period, T_ULONGLONG, "attribute sample_period."),
> +	evsel_attr_member_def(sample_type, T_ULONGLONG, "attribute sample_type."),
> +	evsel_attr_member_def(read_format, T_ULONGLONG, "attribute read_format."),
> +	evsel_attr_member_def(wakeup_events, T_UINT, "attribute wakeup_events."),
> +	{ .name = NULL, },
> +};
> +
>  static const char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
>  
>  static PyTypeObject pyrf_evsel__type = {
> @@ -820,6 +842,7 @@ static PyTypeObject pyrf_evsel__type = {
>  	.tp_dealloc	= (destructor)pyrf_evsel__delete,
>  	.tp_flags	= Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
>  	.tp_doc		= pyrf_evsel__doc,
> +	.tp_members	= pyrf_evsel__members,
>  	.tp_methods	= pyrf_evsel__methods,
>  	.tp_init	= (initproc)pyrf_evsel__init,
>  	.tp_str         = pyrf_evsel__str,
> -- 
> 2.48.1.711.g2feabab25a-goog
>