Adding the way to create pmu event without the actual PMU being in place. This way we can test metrics defined for any processors.
The interface is to define fake_pmu in struct parse_events_state data. It will be used only in tests via special interface function added in following changes. Signed-off-by: Jiri Olsa <[email protected]> --- tools/perf/util/parse-events.c | 14 ++++++++++--- tools/perf/util/parse-events.h | 3 ++- tools/perf/util/parse-events.l | 8 ++++++-- tools/perf/util/parse-events.y | 37 ++++++++++++++++++++++++++++++++-- 4 files changed, 54 insertions(+), 8 deletions(-) diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 27b8e49d690e..8304f9b6e6be 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -1415,6 +1415,7 @@ int parse_events_add_pmu(struct parse_events_state *parse_state, bool auto_merge_stats, bool use_alias) { + bool is_fake = parse_state->fake_pmu; struct perf_event_attr attr; struct perf_pmu_info info; struct perf_pmu *pmu; @@ -1436,7 +1437,14 @@ int parse_events_add_pmu(struct parse_events_state *parse_state, fprintf(stderr, "' that may result in non-fatal errors\n"); } - pmu = perf_pmu__find(name); + if (is_fake) { + static struct perf_pmu fake_pmu = { }; + + pmu = &fake_pmu; + } else { + pmu = perf_pmu__find(name); + } + if (!pmu) { char *err_str; @@ -1469,7 +1477,7 @@ int parse_events_add_pmu(struct parse_events_state *parse_state, } } - if (perf_pmu__check_alias(pmu, head_config, &info)) + if (!is_fake && perf_pmu__check_alias(pmu, head_config, &info)) return -EINVAL; if (verbose > 1) { @@ -1502,7 +1510,7 @@ int parse_events_add_pmu(struct parse_events_state *parse_state, if (pmu->default_config && get_config_chgs(pmu, head_config, &config_terms)) return -ENOMEM; - if (perf_pmu__config(pmu, &attr, head_config, parse_state->error)) { + if (!is_fake && perf_pmu__config(pmu, &attr, head_config, parse_state->error)) { struct evsel_config_term *pos, *tmp; list_for_each_entry_safe(pos, tmp, &config_terms, list) { diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index d60510e0609f..963b0ea6c448 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -126,9 +126,10 @@ struct parse_events_state { int idx; int nr_groups; struct parse_events_error *error; - struct evlist *evlist; + struct evlist *evlist; struct list_head *terms; int stoken; + bool fake_pmu; }; void parse_events__handle_error(struct parse_events_error *err, int idx, diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l index 002802e17059..56912c9641f5 100644 --- a/tools/perf/util/parse-events.l +++ b/tools/perf/util/parse-events.l @@ -129,12 +129,16 @@ do { \ yyless(0); \ } while (0) -static int pmu_str_check(yyscan_t scanner) +static int pmu_str_check(yyscan_t scanner, struct parse_events_state *parse_state) { YYSTYPE *yylval = parse_events_get_lval(scanner); char *text = parse_events_get_text(scanner); yylval->str = strdup(text); + + if (parse_state->fake_pmu) + return PE_PMU_EVENT_FAKE; + switch (perf_pmu__parse_check(text)) { case PMU_EVENT_SYMBOL_PREFIX: return PE_PMU_EVENT_PRE; @@ -376,7 +380,7 @@ r{num_raw_hex} { return raw(yyscanner); } {modifier_event} { return str(yyscanner, PE_MODIFIER_EVENT); } {bpf_object} { if (!isbpf(yyscanner)) { USER_REJECT }; return str(yyscanner, PE_BPF_OBJECT); } {bpf_source} { if (!isbpf(yyscanner)) { USER_REJECT }; return str(yyscanner, PE_BPF_SOURCE); } -{name} { return pmu_str_check(yyscanner); } +{name} { return pmu_str_check(yyscanner, _parse_state); } {name_tag} { return str(yyscanner, PE_NAME); } "/" { BEGIN(config); return '/'; } - { return '-'; } diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y index c4ca932d092d..d1b04b8d81ea 100644 --- a/tools/perf/util/parse-events.y +++ b/tools/perf/util/parse-events.y @@ -69,7 +69,7 @@ static void inc_group_count(struct list_head *list, %token PE_NAME_CACHE_TYPE PE_NAME_CACHE_OP_RESULT %token PE_PREFIX_MEM PE_PREFIX_RAW PE_PREFIX_GROUP %token PE_ERROR -%token PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT +%token PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT PE_PMU_EVENT_FAKE %token PE_ARRAY_ALL PE_ARRAY_RANGE %token PE_DRV_CFG_TERM %type <num> PE_VALUE @@ -87,7 +87,7 @@ static void inc_group_count(struct list_head *list, %type <str> PE_MODIFIER_EVENT %type <str> PE_MODIFIER_BP %type <str> PE_EVENT_NAME -%type <str> PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT +%type <str> PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT PE_PMU_EVENT_FAKE %type <str> PE_DRV_CFG_TERM %destructor { free ($$); } <str> %type <term> event_term @@ -356,6 +356,39 @@ PE_PMU_EVENT_PRE '-' PE_PMU_EVENT_SUF sep_dc YYABORT; $$ = list; } +| +PE_PMU_EVENT_FAKE sep_dc +{ + struct list_head *list; + int err; + + list = alloc_list(); + if (!list) + YYABORT; + + err = parse_events_add_pmu(_parse_state, list, $1, NULL, false, false); + free($1); + if (err < 0) + YYABORT; + $$ = list; +} +| +PE_PMU_EVENT_FAKE opt_pmu_config +{ + struct list_head *list; + int err; + + list = alloc_list(); + if (!list) + YYABORT; + + err = parse_events_add_pmu(_parse_state, list, $1, $2, false, false); + free($1); + parse_events_terms__delete($2); + if (err < 0) + YYABORT; + $$ = list; +} value_sym: PE_VALUE_SYM_HW -- 2.25.4
