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Date: Sun, 30 Jun 2024 12:06:36 +0530
From: Madadi Vineeth Reddy <vineethr@...ux.ibm.com>
To: Namhyung Kim <namhyung@...nel.org>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>,
Ian Rogers <irogers@...gle.com>,
Athira Rajeev
<atrajeev@...ux.vnet.ibm.com>,
Chen Yu <yu.c.chen@...el.com>, Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>, 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>, acme@...hat.com,
Fernand Sieber <sieberf@...zon.com>,
linux-perf-users <linux-perf-users@...r.kernel.org>,
LKML <linux-kernel@...r.kernel.org>,
Madadi Vineeth Reddy <vineethr@...ux.ibm.com>
Subject: Re: [PATCH v5 3/3] perf sched map: Add --fuzzy-name option for fuzzy
matching in task names
Hi Namhyung,
On 28/06/24 05:09, Namhyung Kim wrote:
> On Wed, Jun 26, 2024 at 02:45:50PM +0530, Madadi Vineeth Reddy wrote:
>> The --fuzzy-name option can be used if fuzzy name matching is required.
>> For example, "taskname" can be matched to any string that contains
>> "taskname" as its substring.
>>
>> Sample output for --task-name wdav --fuzzy-name
>> =============
>> . *A0 . . . . - . 131040.641346 secs A0 => wdavdaemon:62509
>> . A0 *B0 . . . - . 131040.641378 secs B0 => wdavdaemon:62274
>> - *- - - - - - - 131040.641379 secs
>
> - *- B0 - - - - - 131040.641379 secs
>
>> *C0 . B0 . . . . . 131040.641572 secs C0 => wdavdaemon:62283
>> C0 . B0 . *D0 . . . 131040.641572 secs D0 => wdavdaemon:62277
>> C0 . B0 . D0 . *E0 . 131040.641578 secs E0 => wdavdaemon:62270
>> *- - - - - - - - 131040.641581 secs
>
> *- - B0 - D0 - E0 - 131040.641581 secs
>
Understood. Thank you for the review.
Thanks and Regards
Madadi Vineeth Reddy
> Thanks,
> Namhyung
>
>>
>> Suggested-by: Chen Yu <yu.c.chen@...el.com>
>> Reviewed-and-tested-by: Athira Rajeev <atrajeev@...ux.vnet.ibm.com>
>> Signed-off-by: Madadi Vineeth Reddy <vineethr@...ux.ibm.com>
>> ---
>> tools/perf/Documentation/perf-sched.txt | 3 +++
>> tools/perf/builtin-sched.c | 22 +++++++++++++++-------
>> 2 files changed, 18 insertions(+), 7 deletions(-)
>>
>> diff --git a/tools/perf/Documentation/perf-sched.txt b/tools/perf/Documentation/perf-sched.txt
>> index 3095e280eb92..938b41a3befa 100644
>> --- a/tools/perf/Documentation/perf-sched.txt
>> +++ b/tools/perf/Documentation/perf-sched.txt
>> @@ -137,6 +137,9 @@ OPTIONS for 'perf sched map'
>> task name(s).
>> ('-' indicates other tasks while '.' is idle).
>>
>> +--fuzzy-name::
>> + Given task name(s) can be partially matched (fuzzy matching).
>> +
>> OPTIONS for 'perf sched timehist'
>> ---------------------------------
>> -k::
>> diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
>> index ecb43deb9d74..c801c38e8b9a 100644
>> --- a/tools/perf/builtin-sched.c
>> +++ b/tools/perf/builtin-sched.c
>> @@ -157,6 +157,7 @@ struct perf_sched_map {
>> struct perf_cpu_map *color_cpus;
>> const char *color_cpus_str;
>> const char *task_name;
>> + bool fuzzy;
>> struct perf_cpu_map *cpus;
>> const char *cpus_str;
>> };
>> @@ -1599,12 +1600,16 @@ static struct CommandList *parse_commands(const char *commands)
>> return cmd_list;
>> }
>>
>> -static bool sched_match_task(const char *comm_str, struct CommandList *cmd_list)
>> +static bool sched_match_task(const char *comm_str, struct CommandList *cmd_list, bool fuzzy_match)
>> {
>> bool match_found = false;
>>
>> - for (int i = 0; i < cmd_list->command_count && !match_found; i++)
>> - match_found = !strcmp(comm_str, cmd_list->command_list[i]);
>> + for (int i = 0; i < cmd_list->command_count && !match_found; i++) {
>> + if (fuzzy_match)
>> + match_found = !!strstr(comm_str, cmd_list->command_list[i]);
>> + else
>> + match_found = !strcmp(comm_str, cmd_list->command_list[i]);
>> + }
>>
>> return match_found;
>> }
>> @@ -1727,7 +1732,8 @@ static int map_switch_event(struct perf_sched *sched, struct evsel *evsel,
>> */
>> tr->shortname[0] = '.';
>> tr->shortname[1] = ' ';
>> - } else if (!sched->map.task_name || sched_match_task(str, cmd_list)) {
>> + } else if (!sched->map.task_name || sched_match_task(str, cmd_list,
>> + sched->map.fuzzy)) {
>> tr->shortname[0] = sched->next_shortname1;
>> tr->shortname[1] = sched->next_shortname2;
>>
>> @@ -1756,15 +1762,15 @@ static int map_switch_event(struct perf_sched *sched, struct evsel *evsel,
>> * Check which of sched_in and sched_out matches the passed --task-name
>> * arguments and call the corresponding print_sched_map.
>> */
>> - if (sched->map.task_name && !sched_match_task(str, cmd_list)) {
>> - if (!sched_match_task(thread__comm_str(sched_out), cmd_list))
>> + if (sched->map.task_name && !sched_match_task(str, cmd_list, sched->map.fuzzy)) {
>> + if (!sched_match_task(thread__comm_str(sched_out), cmd_list, sched->map.fuzzy))
>> goto out;
>> else
>> goto sched_out;
>>
>> } else {
>> str = thread__comm_str(sched_out);
>> - if (!(sched->map.task_name && !sched_match_task(str, cmd_list)))
>> + if (!(sched->map.task_name && !sched_match_task(str, cmd_list, sched->map.fuzzy)))
>> proceed = 1;
>> }
>>
>> @@ -3707,6 +3713,8 @@ int cmd_sched(int argc, const char **argv)
>> "display given CPUs in map"),
>> OPT_STRING(0, "task-name", &sched.map.task_name, "task",
>> "map output only for the given task name(s)."),
>> + OPT_BOOLEAN(0, "fuzzy-name", &sched.map.fuzzy,
>> + "given command name can be partially matched (fuzzy matching)"),
>> OPT_PARENT(sched_options)
>> };
>> const struct option timehist_options[] = {
>> --
>> 2.43.2
>>
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