Re: [PATCH] perf list: Hide deprecated events by default

From: Jiri Olsa
Date: Fri Oct 18 2019 - 10:24:18 EST

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On Fri, Oct 18, 2019 at 10:09:44PM +0800, Jin, Yao wrote:
> Since now we go back to this version, can this patch be accepted?

right, sry

Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>

thanks,
jirka

>
> Thanks
> Jin Yao
>
> On 10/15/2019 10:53 AM, Jin Yao wrote:
> > There are some deprecated events listed by perf list. But we can't remove
> > them from perf list with ease because some old scripts may use them.
> >
> > Deprecated events are old names of renamed events. When an event gets
> > renamed the old name is kept around for some time and marked with
> > Deprecated. The newer Intel event lists in the tree already have these
> > headers.
> >
> > So we need to keep them in the event list, but provide a new option to
> > show them. The new option is "--deprecated".
> >
> > With this patch, the deprecated events are hidden by default but they can
> > be displayed when option "--deprecated" is enabled.
> >
> > Signed-off-by: Jin Yao <yao.jin@xxxxxxxxxxxxxxx>
> > ---
> > tools/perf/Documentation/perf-list.txt | 3 +++
> > tools/perf/builtin-list.c | 14 ++++++++++----
> > tools/perf/pmu-events/jevents.c | 26 ++++++++++++++++++++------
> > tools/perf/pmu-events/jevents.h | 3 ++-
> > tools/perf/pmu-events/pmu-events.h | 1 +
> > tools/perf/util/parse-events.c | 4 ++--
> > tools/perf/util/parse-events.h | 2 +-
> > tools/perf/util/pmu.c | 17 +++++++++++++----
> > tools/perf/util/pmu.h | 4 +++-
> > 9 files changed, 55 insertions(+), 19 deletions(-)
> >
> > diff --git a/tools/perf/Documentation/perf-list.txt b/tools/perf/Documentation/perf-list.txt
> > index 18ed1b0fceb3..6345db33c533 100644
> > --- a/tools/perf/Documentation/perf-list.txt
> > +++ b/tools/perf/Documentation/perf-list.txt
> > @@ -36,6 +36,9 @@ Enable debugging output.
> > Print how named events are resolved internally into perf events, and also
> > any extra expressions computed by perf stat.
> > +--deprecated::
> > +Print deprecated events. By default the deprecated events are hidden.
> > +
> > [[EVENT_MODIFIERS]]
> > EVENT MODIFIERS
> > ---------------
> > diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c
> > index 08e62ae9d37e..965ef017496f 100644
> > --- a/tools/perf/builtin-list.c
> > +++ b/tools/perf/builtin-list.c
> > @@ -26,6 +26,7 @@ int cmd_list(int argc, const char **argv)
> > int i;
> > bool raw_dump = false;
> > bool long_desc_flag = false;
> > + bool deprecated = false;
> > struct option list_options[] = {
> > OPT_BOOLEAN(0, "raw-dump", &raw_dump, "Dump raw events"),
> > OPT_BOOLEAN('d', "desc", &desc_flag,
> > @@ -34,6 +35,8 @@ int cmd_list(int argc, const char **argv)
> > "Print longer event descriptions."),
> > OPT_BOOLEAN(0, "details", &details_flag,
> > "Print information on the perf event names and expressions used internally by events."),
> > + OPT_BOOLEAN(0, "deprecated", &deprecated,
> > + "Print deprecated events."),
> > OPT_INCR(0, "debug", &verbose,
> > "Enable debugging output"),
> > OPT_END()
> > @@ -55,7 +58,7 @@ int cmd_list(int argc, const char **argv)
> > if (argc == 0) {
> > print_events(NULL, raw_dump, !desc_flag, long_desc_flag,
> > - details_flag);
> > + details_flag, deprecated);
> > return 0;
> > }
> > @@ -78,7 +81,8 @@ int cmd_list(int argc, const char **argv)
> > print_hwcache_events(NULL, raw_dump);
> > else if (strcmp(argv[i], "pmu") == 0)
> > print_pmu_events(NULL, raw_dump, !desc_flag,
> > - long_desc_flag, details_flag);
> > + long_desc_flag, details_flag,
> > + deprecated);
> > else if (strcmp(argv[i], "sdt") == 0)
> > print_sdt_events(NULL, NULL, raw_dump);
> > else if (strcmp(argv[i], "metric") == 0 || strcmp(argv[i], "metrics") == 0)
> > @@ -91,7 +95,8 @@ int cmd_list(int argc, const char **argv)
> > if (sep == NULL) {
> > print_events(argv[i], raw_dump, !desc_flag,
> > long_desc_flag,
> > - details_flag);
> > + details_flag,
> > + deprecated);
> > continue;
> > }
> > sep_idx = sep - argv[i];
> > @@ -117,7 +122,8 @@ int cmd_list(int argc, const char **argv)
> > print_hwcache_events(s, raw_dump);
> > print_pmu_events(s, raw_dump, !desc_flag,
> > long_desc_flag,
> > - details_flag);
> > + details_flag,
> > + deprecated);
> > print_tracepoint_events(NULL, s, raw_dump);
> > print_sdt_events(NULL, s, raw_dump);
> > metricgroup__print(true, true, s, raw_dump, details_flag);
> > diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
> > index e2837260ca4d..7d69727f44bd 100644
> > --- a/tools/perf/pmu-events/jevents.c
> > +++ b/tools/perf/pmu-events/jevents.c
> > @@ -322,7 +322,8 @@ static int print_events_table_entry(void *data, char *name, char *event,
> > char *desc, char *long_desc,
> > char *pmu, char *unit, char *perpkg,
> > char *metric_expr,
> > - char *metric_name, char *metric_group)
> > + char *metric_name, char *metric_group,
> > + char *deprecated)
> > {
> > struct perf_entry_data *pd = data;
> > FILE *outfp = pd->outfp;
> > @@ -354,6 +355,8 @@ static int print_events_table_entry(void *data, char *name, char *event,
> > fprintf(outfp, "\t.metric_name = \"%s\",\n", metric_name);
> > if (metric_group)
> > fprintf(outfp, "\t.metric_group = \"%s\",\n", metric_group);
> > + if (deprecated)
> > + fprintf(outfp, "\t.deprecated = \"%s\",\n", deprecated);
> > fprintf(outfp, "},\n");
> > return 0;
> > @@ -371,6 +374,7 @@ struct event_struct {
> > char *metric_expr;
> > char *metric_name;
> > char *metric_group;
> > + char *deprecated;
> > };
> > #define ADD_EVENT_FIELD(field) do { if (field) { \
> > @@ -398,6 +402,7 @@ struct event_struct {
> > op(metric_expr); \
> > op(metric_name); \
> > op(metric_group); \
> > + op(deprecated); \
> > } while (0)
> > static LIST_HEAD(arch_std_events);
> > @@ -416,7 +421,8 @@ static void free_arch_std_events(void)
> > static int save_arch_std_events(void *data, char *name, char *event,
> > char *desc, char *long_desc, char *pmu,
> > char *unit, char *perpkg, char *metric_expr,
> > - char *metric_name, char *metric_group)
> > + char *metric_name, char *metric_group,
> > + char *deprecated)
> > {
> > struct event_struct *es;
> > @@ -479,7 +485,8 @@ static int
> > try_fixup(const char *fn, char *arch_std, char **event, char **desc,
> > char **name, char **long_desc, char **pmu, char **filter,
> > char **perpkg, char **unit, char **metric_expr, char **metric_name,
> > - char **metric_group, unsigned long long eventcode)
> > + char **metric_group, unsigned long long eventcode,
> > + char **deprecated)
> > {
> > /* try to find matching event from arch standard values */
> > struct event_struct *es;
> > @@ -507,7 +514,8 @@ int json_events(const char *fn,
> > char *long_desc,
> > char *pmu, char *unit, char *perpkg,
> > char *metric_expr,
> > - char *metric_name, char *metric_group),
> > + char *metric_name, char *metric_group,
> > + char *deprecated),
> > void *data)
> > {
> > int err;
> > @@ -536,6 +544,7 @@ int json_events(const char *fn,
> > char *metric_expr = NULL;
> > char *metric_name = NULL;
> > char *metric_group = NULL;
> > + char *deprecated = NULL;
> > char *arch_std = NULL;
> > unsigned long long eventcode = 0;
> > struct msrmap *msr = NULL;
> > @@ -614,6 +623,8 @@ int json_events(const char *fn,
> > addfield(map, &unit, "", "", val);
> > } else if (json_streq(map, field, "PerPkg")) {
> > addfield(map, &perpkg, "", "", val);
> > + } else if (json_streq(map, field, "Deprecated")) {
> > + addfield(map, &deprecated, "", "", val);
> > } else if (json_streq(map, field, "MetricName")) {
> > addfield(map, &metric_name, "", "", val);
> > } else if (json_streq(map, field, "MetricGroup")) {
> > @@ -658,12 +669,14 @@ int json_events(const char *fn,
> > err = try_fixup(fn, arch_std, &event, &desc, &name,
> > &long_desc, &pmu, &filter, &perpkg,
> > &unit, &metric_expr, &metric_name,
> > - &metric_group, eventcode);
> > + &metric_group, eventcode,
> > + &deprecated);
> > if (err)
> > goto free_strings;
> > }
> > err = func(data, name, real_event(name, event), desc, long_desc,
> > - pmu, unit, perpkg, metric_expr, metric_name, metric_group);
> > + pmu, unit, perpkg, metric_expr, metric_name,
> > + metric_group, deprecated);
> > free_strings:
> > free(event);
> > free(desc);
> > @@ -673,6 +686,7 @@ int json_events(const char *fn,
> > free(pmu);
> > free(filter);
> > free(perpkg);
> > + free(deprecated);
> > free(unit);
> > free(metric_expr);
> > free(metric_name);
> > diff --git a/tools/perf/pmu-events/jevents.h b/tools/perf/pmu-events/jevents.h
> > index 4684c673c445..5cda49a42143 100644
> > --- a/tools/perf/pmu-events/jevents.h
> > +++ b/tools/perf/pmu-events/jevents.h
> > @@ -7,7 +7,8 @@ int json_events(const char *fn,
> > char *long_desc,
> > char *pmu,
> > char *unit, char *perpkg, char *metric_expr,
> > - char *metric_name, char *metric_group),
> > + char *metric_name, char *metric_group,
> > + char *deprecated),
> > void *data);
> > char *get_cpu_str(void);
> > diff --git a/tools/perf/pmu-events/pmu-events.h b/tools/perf/pmu-events/pmu-events.h
> > index 92a4d15ee0b9..caeb577d36c9 100644
> > --- a/tools/perf/pmu-events/pmu-events.h
> > +++ b/tools/perf/pmu-events/pmu-events.h
> > @@ -17,6 +17,7 @@ struct pmu_event {
> > const char *metric_expr;
> > const char *metric_name;
> > const char *metric_group;
> > + const char *deprecated;
> > };
> > /*
> > diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
> > index b5e2adef49de..db882f630f7e 100644
> > --- a/tools/perf/util/parse-events.c
> > +++ b/tools/perf/util/parse-events.c
> > @@ -2600,7 +2600,7 @@ void print_symbol_events(const char *event_glob, unsigned type,
> > * Print the help text for the event symbols:
> > */
> > void print_events(const char *event_glob, bool name_only, bool quiet_flag,
> > - bool long_desc, bool details_flag)
> > + bool long_desc, bool details_flag, bool deprecated)
> > {
> > print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
> > event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
> > @@ -2612,7 +2612,7 @@ void print_events(const char *event_glob, bool name_only, bool quiet_flag,
> > print_hwcache_events(event_glob, name_only);
> > print_pmu_events(event_glob, name_only, quiet_flag, long_desc,
> > - details_flag);
> > + details_flag, deprecated);
> > if (event_glob != NULL)
> > return;
> > diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
> > index 616ca1eda0eb..769e07cddaa2 100644
> > --- a/tools/perf/util/parse-events.h
> > +++ b/tools/perf/util/parse-events.h
> > @@ -195,7 +195,7 @@ void parse_events_evlist_error(struct parse_events_state *parse_state,
> > int idx, const char *str);
> > void print_events(const char *event_glob, bool name_only, bool quiet,
> > - bool long_desc, bool details_flag);
> > + bool long_desc, bool details_flag, bool deprecated);
> > struct event_symbol {
> > const char *symbol;
> > diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
> > index 5608da82ad23..adbe97e941dd 100644
> > --- a/tools/perf/util/pmu.c
> > +++ b/tools/perf/util/pmu.c
> > @@ -308,7 +308,8 @@ static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
> > char *long_desc, char *topic,
> > char *unit, char *perpkg,
> > char *metric_expr,
> > - char *metric_name)
> > + char *metric_name,
> > + char *deprecated)
> > {
> > struct parse_events_term *term;
> > struct perf_pmu_alias *alias;
> > @@ -325,6 +326,7 @@ static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
> > alias->unit[0] = '\0';
> > alias->per_pkg = false;
> > alias->snapshot = false;
> > + alias->deprecated = false;
> > ret = parse_events_terms(&alias->terms, val);
> > if (ret) {
> > @@ -379,6 +381,9 @@ static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
> > alias->per_pkg = perpkg && sscanf(perpkg, "%d", &num) == 1 && num == 1;
> > alias->str = strdup(newval);
> > + if (deprecated)
> > + alias->deprecated = true;
> > +
> > if (!perf_pmu_merge_alias(alias, list))
> > list_add_tail(&alias->list, list);
> > @@ -400,7 +405,7 @@ static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FI
> > strim(buf);
> > return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL, NULL,
> > - NULL, NULL, NULL);
> > + NULL, NULL, NULL, NULL);
> > }
> > static inline bool pmu_alias_info_file(char *name)
> > @@ -787,7 +792,8 @@ static void pmu_add_cpu_aliases(struct list_head *head, struct perf_pmu *pmu)
> > (char *)pe->long_desc, (char *)pe->topic,
> > (char *)pe->unit, (char *)pe->perpkg,
> > (char *)pe->metric_expr,
> > - (char *)pe->metric_name);
> > + (char *)pe->metric_name,
> > + (char *)pe->deprecated);
> > }
> > }
> > @@ -1383,7 +1389,7 @@ static void wordwrap(char *s, int start, int max, int corr)
> > }
> > void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
> > - bool long_desc, bool details_flag)
> > + bool long_desc, bool details_flag, bool deprecated)
> > {
> > struct perf_pmu *pmu;
> > struct perf_pmu_alias *alias;
> > @@ -1414,6 +1420,9 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
> > format_alias(buf, sizeof(buf), pmu, alias);
> > bool is_cpu = !strcmp(pmu->name, "cpu");
> > + if (alias->deprecated && !deprecated)
> > + continue;
> > +
> > if (event_glob != NULL &&
> > !(strglobmatch_nocase(name, event_glob) ||
> > (!is_cpu && strglobmatch_nocase(alias->name,
> > diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
> > index f36ade6df76d..3e8cd31a89cc 100644
> > --- a/tools/perf/util/pmu.h
> > +++ b/tools/perf/util/pmu.h
> > @@ -57,6 +57,7 @@ struct perf_pmu_alias {
> > double scale;
> > bool per_pkg;
> > bool snapshot;
> > + bool deprecated;
> > char *metric_expr;
> > char *metric_name;
> > };
> > @@ -85,7 +86,8 @@ int perf_pmu__format_parse(char *dir, struct list_head *head);
> > struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu);
> > void print_pmu_events(const char *event_glob, bool name_only, bool quiet,
> > - bool long_desc, bool details_flag);
> > + bool long_desc, bool details_flag,
> > + bool deprecated);
> > bool pmu_have_event(const char *pname, const char *name);
> > int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt, ...) __scanf(3, 4);
> >

Next message: Matthew Wilcox: "Re: [PATCH] mm,thp: recheck each page before collapsing file THP"
Previous message: Jeffrey Hugo: "Re: [PATCH v4 1/2] clk: qcom: Add MSM8998 GPU Clock Controller (GPUCC) driver"
In reply to: Jin, Yao: "Re: [PATCH] perf list: Hide deprecated events by default"
Next in thread: Arnaldo Carvalho de Melo: "Re: [PATCH] perf list: Hide deprecated events by default"
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