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Message-ID: <ZyPZCbwBdypPhDHA@x1>
Date: Thu, 31 Oct 2024 16:22:49 -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>,
James Clark <james.clark@...aro.org>,
Howard Chu <howardchu95@...il.com>,
Athira Jajeev <atrajeev@...ux.vnet.ibm.com>,
Michael Petlan <mpetlan@...hat.com>,
Veronika Molnarova <vmolnaro@...hat.com>,
Dapeng Mi <dapeng1.mi@...ux.intel.com>,
Thomas Richter <tmricht@...ux.ibm.com>,
Ilya Leoshkevich <iii@...ux.ibm.com>,
Colin Ian King <colin.i.king@...il.com>,
Weilin Wang <weilin.wang@...el.com>,
Andi Kleen <ak@...ux.intel.com>,
Josh Poimboeuf <jpoimboe@...hat.com>, linux-kernel@...r.kernel.org,
linux-perf-users@...r.kernel.org
Subject: Re: [PATCH v5 19/21] perf python: Add __str__ and __repr__ functions
to evlist
On Wed, Oct 30, 2024 at 06:42:50PM -0700, Ian Rogers wrote:
> This allows the values in the evlist to be shown in the REPL like:
> ```
> Python 3.11.9 (main, Jun 19 2024, 00:38:48) [GCC 13.2.0] on linux
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import sys
> >>> sys.path.insert(0,'/tmp/perf/python')
> >>> import perf
> >>> perf.parse_events('cycles,data_read')
> evlist([cycles,uncore_imc_free_running_0/data_read/,uncore_imc_free_running_1/data_read/])
> ```
Tested-by: Arnaldo Carvalho de Melo <acme@...hat.com>
> Signed-off-by: Ian Rogers <irogers@...gle.com>
> ---
> tools/perf/util/python.c | 26 ++++++++++++++++++++++++++
> 1 file changed, 26 insertions(+)
>
> diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
> index 1a53a97c513d..a71bad3418da 100644
> --- a/tools/perf/util/python.c
> +++ b/tools/perf/util/python.c
> @@ -1069,6 +1069,30 @@ static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
> return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
> }
>
> +static PyObject *pyrf_evlist__str(PyObject *self)
> +{
> + struct pyrf_evlist *pevlist = (void *)self;
> + struct evsel *pos;
> + struct strbuf sb = STRBUF_INIT;
> + bool first = true;
> + PyObject *result;
> +
> + strbuf_addstr(&sb, "evlist([");
> + evlist__for_each_entry(&pevlist->evlist, pos) {
> + if (!first)
> + strbuf_addch(&sb, ',');
> + if (!pos->pmu)
> + strbuf_addstr(&sb, evsel__name(pos));
> + else
> + strbuf_addf(&sb, "%s/%s/", pos->pmu->name, evsel__name(pos));
> + first = false;
> + }
> + strbuf_addstr(&sb, "])");
> + result = PyUnicode_FromString(sb.buf);
> + strbuf_release(&sb);
> + return result;
> +}
> +
> static PySequenceMethods pyrf_evlist__sequence_methods = {
> .sq_length = pyrf_evlist__length,
> .sq_item = pyrf_evlist__item,
> @@ -1086,6 +1110,8 @@ static PyTypeObject pyrf_evlist__type = {
> .tp_doc = pyrf_evlist__doc,
> .tp_methods = pyrf_evlist__methods,
> .tp_init = (initproc)pyrf_evlist__init,
> + .tp_repr = pyrf_evlist__str,
> + .tp_str = pyrf_evlist__str,
> };
>
> static int pyrf_evlist__setup_types(void)
> --
> 2.47.0.163.g1226f6d8fa-goog
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