[PATCH v2 3/5] perf pmu: Rename name matching for no suffix or wildcard variants

Ian Rogers
2025-01-23T07:47:09Z

Wildcard PMU naming will match a name like pmu_1 to a PMU name like
pmu_10 but not to a PMU name like pmu_2 as the suffix forms part of
the match. No suffix matching will match pmu_10 to either pmu_1 or
pmu_2. Add or rename matching functions on PMU to make it clearer what
kind of matching is being performed.

Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/pmu-events/empty-pmu-events.c | 8 +-
tools/perf/pmu-events/jevents.py | 8 +-
tools/perf/tests/pmu.c | 85 ++++----
tools/perf/util/parse-events.c | 2 +-
tools/perf/util/pmu.c | 252 ++++++++++++++++-------
tools/perf/util/pmu.h | 5 +-
6 files changed, 231 insertions(+), 129 deletions(-)

diff --git a/tools/perf/pmu-events/empty-pmu-events.c b/tools/perf/pmu-events/empty-pmu-events.c
index 1c7a2cfa321f..0cb7ba7912e8 100644
--- a/tools/perf/pmu-events/empty-pmu-events.c
+++ b/tools/perf/pmu-events/empty-pmu-events.c
@@ -422,7 +422,7 @@ int pmu_events_table__for_each_event(const struct pmu_events_table *table,
const char *pmu_name = &big_c_string[table_pmu->pmu_name.offset];
int ret;

- if (pmu && !pmu__name_match(pmu, pmu_name))
+ if (pmu && !perf_pmu__name_wildcard_match(pmu, pmu_name))
continue;

ret = pmu_events_table__for_each_event_pmu(table, table_pmu, fn, data);
@@ -443,7 +443,7 @@ int pmu_events_table__find_event(const struct pmu_events_table *table,
const char *pmu_name = &big_c_string[table_pmu->pmu_name.offset];
int ret;

- if (!pmu__name_match(pmu, pmu_name))
+ if (!perf_pmu__name_wildcard_match(pmu, pmu_name))
continue;

ret = pmu_events_table__find_event_pmu(table, table_pmu, name, fn, data);
@@ -462,7 +462,7 @@ size_t pmu_events_table__num_events(const struct pmu_events_table *table,
const struct pmu_table_entry *table_pmu = &table->pmus[i];
const char *pmu_name = &big_c_string[table_pmu->pmu_name.offset];

- if (pmu__name_match(pmu, pmu_name))
+ if (perf_pmu__name_wildcard_match(pmu, pmu_name))
count += table_pmu->num_entries;
}
return count;
@@ -581,7 +581,7 @@ const struct pmu_events_table *perf_pmu__find_events_table(struct perf_pmu *pmu)
const struct pmu_table_entry *table_pmu = &map->event_table.pmus[i];
const char *pmu_name = &big_c_string[table_pmu->pmu_name.offset];

- if (pmu__name_match(pmu, pmu_name))
+ if (perf_pmu__name_wildcard_match(pmu, pmu_name))
return &map->event_table;
}
return NULL;
diff --git a/tools/perf/pmu-events/jevents.py b/tools/perf/pmu-events/jevents.py
index 3e204700b59a..7499a35bfadd 100755
--- a/tools/perf/pmu-events/jevents.py
+++ b/tools/perf/pmu-events/jevents.py
@@ -945,7 +945,7 @@ int pmu_events_table__for_each_event(const struct pmu_events_table *table,
const char *pmu_name = &big_c_string[table_pmu->pmu_name.offset];
int ret;

- if (pmu && !pmu__name_match(pmu, pmu_name))
+ if (pmu && !perf_pmu__name_wildcard_match(pmu, pmu_name))
continue;

ret = pmu_events_table__for_each_event_pmu(table, table_pmu, fn, data);
@@ -966,7 +966,7 @@ int pmu_events_table__find_event(const struct pmu_events_table *table,
const char *pmu_name = &big_c_string[table_pmu->pmu_name.offset];
int ret;

- if (!pmu__name_match(pmu, pmu_name))
+ if (!perf_pmu__name_wildcard_match(pmu, pmu_name))
continue;

ret = pmu_events_table__find_event_pmu(table, table_pmu, name, fn, data);
@@ -985,7 +985,7 @@ size_t pmu_events_table__num_events(const struct pmu_events_table *table,
const struct pmu_table_entry *table_pmu = &table->pmus[i];
const char *pmu_name = &big_c_string[table_pmu->pmu_name.offset];

- if (pmu__name_match(pmu, pmu_name))
+ if (perf_pmu__name_wildcard_match(pmu, pmu_name))
count += table_pmu->num_entries;
}
return count;
@@ -1104,7 +1104,7 @@ const struct pmu_events_table *perf_pmu__find_events_table(struct perf_pmu *pmu)
const struct pmu_table_entry *table_pmu = &map->event_table.pmus[i];
const char *pmu_name = &big_c_string[table_pmu->pmu_name.offset];

- if (pmu__name_match(pmu, pmu_name))
+ if (perf_pmu__name_wildcard_match(pmu, pmu_name))
return &map->event_table;
}
return NULL;
diff --git a/tools/perf/tests/pmu.c b/tools/perf/tests/pmu.c
index 6a681e3fb552..4a9f8e090cf4 100644
--- a/tools/perf/tests/pmu.c
+++ b/tools/perf/tests/pmu.c
@@ -452,9 +452,9 @@ static int test__name_cmp(struct test_suite *test __maybe_unused, int subtest __
}

/**
- * Test perf_pmu__match() that's used to search for a PMU given a name passed
+ * Test perf_pmu__wildcard_match() that's used to search for a PMU given a name passed
* on the command line. The name that's passed may also be a filename type glob
- * match. If the name does not match, perf_pmu__match() attempts to match the
+ * match. If the name does not match, perf_pmu__wildcard_match() attempts to match the
* alias of the PMU, if provided.
*/
static int test__pmu_match(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
@@ -463,41 +463,44 @@ static int test__pmu_match(struct test_suite *test __maybe_unused, int subtest _
.name = "pmuname",
};

- TEST_ASSERT_EQUAL("Exact match", perf_pmu__match(&test_pmu, "pmuname"), true);
- TEST_ASSERT_EQUAL("Longer token", perf_pmu__match(&test_pmu, "longertoken"), false);
- TEST_ASSERT_EQUAL("Shorter token", perf_pmu__match(&test_pmu, "pmu"), false);
+#define TEST_PMU_MATCH(msg, to_match, expect) \
+ TEST_ASSERT_EQUAL(msg, perf_pmu__wildcard_match(&test_pmu, to_match), expect)
+
+ TEST_PMU_MATCH("Exact match", "pmuname", true);
+ TEST_PMU_MATCH("Longer token", "longertoken", false);
+ TEST_PMU_MATCH("Shorter token", "pmu", false);

test_pmu.name = "pmuname_10";
- TEST_ASSERT_EQUAL("Diff suffix_", perf_pmu__match(&test_pmu, "pmuname_2"), false);
- TEST_ASSERT_EQUAL("Sub suffix_", perf_pmu__match(&test_pmu, "pmuname_1"), true);
- TEST_ASSERT_EQUAL("Same suffix_", perf_pmu__match(&test_pmu, "pmuname_10"), true);
- TEST_ASSERT_EQUAL("No suffix_", perf_pmu__match(&test_pmu, "pmuname"), true);
- TEST_ASSERT_EQUAL("Underscore_", perf_pmu__match(&test_pmu, "pmuname_"), true);
- TEST_ASSERT_EQUAL("Substring_", perf_pmu__match(&test_pmu, "pmuna"), false);
+ TEST_PMU_MATCH("Diff suffix_", "pmuname_2", false);
+ TEST_PMU_MATCH("Sub suffix_", "pmuname_1", true);
+ TEST_PMU_MATCH("Same suffix_", "pmuname_10", true);
+ TEST_PMU_MATCH("No suffix_", "pmuname", true);
+ TEST_PMU_MATCH("Underscore_", "pmuname_", true);
+ TEST_PMU_MATCH("Substring_", "pmuna", false);

test_pmu.name = "pmuname_ab23";
- TEST_ASSERT_EQUAL("Diff suffix hex_", perf_pmu__match(&test_pmu, "pmuname_2"), false);
- TEST_ASSERT_EQUAL("Sub suffix hex_", perf_pmu__match(&test_pmu, "pmuname_ab"), true);
- TEST_ASSERT_EQUAL("Same suffix hex_", perf_pmu__match(&test_pmu, "pmuname_ab23"), true);
- TEST_ASSERT_EQUAL("No suffix hex_", perf_pmu__match(&test_pmu, "pmuname"), true);
- TEST_ASSERT_EQUAL("Underscore hex_", perf_pmu__match(&test_pmu, "pmuname_"), true);
- TEST_ASSERT_EQUAL("Substring hex_", perf_pmu__match(&test_pmu, "pmuna"), false);
+ TEST_PMU_MATCH("Diff suffix hex_", "pmuname_2", false);
+ TEST_PMU_MATCH("Sub suffix hex_", "pmuname_ab", true);
+ TEST_PMU_MATCH("Same suffix hex_", "pmuname_ab23", true);
+ TEST_PMU_MATCH("No suffix hex_", "pmuname", true);
+ TEST_PMU_MATCH("Underscore hex_", "pmuname_", true);
+ TEST_PMU_MATCH("Substring hex_", "pmuna", false);

test_pmu.name = "pmuname10";
- TEST_ASSERT_EQUAL("Diff suffix", perf_pmu__match(&test_pmu, "pmuname2"), false);
- TEST_ASSERT_EQUAL("Sub suffix", perf_pmu__match(&test_pmu, "pmuname1"), true);
- TEST_ASSERT_EQUAL("Same suffix", perf_pmu__match(&test_pmu, "pmuname10"), true);
- TEST_ASSERT_EQUAL("No suffix", perf_pmu__match(&test_pmu, "pmuname"), true);
- TEST_ASSERT_EQUAL("Underscore", perf_pmu__match(&test_pmu, "pmuname_"), false);
- TEST_ASSERT_EQUAL("Substring", perf_pmu__match(&test_pmu, "pmuna"), false);
+ TEST_PMU_MATCH("Diff suffix", "pmuname2", false);
+ TEST_PMU_MATCH("Sub suffix", "pmuname1", true);
+ TEST_PMU_MATCH("Same suffix", "pmuname10", true);
+ TEST_PMU_MATCH("No suffix", "pmuname", true);
+ TEST_PMU_MATCH("Underscore", "pmuname_", false);
+ TEST_PMU_MATCH("Substring", "pmuna", false);

test_pmu.name = "pmunameab23";
- TEST_ASSERT_EQUAL("Diff suffix hex", perf_pmu__match(&test_pmu, "pmuname2"), false);
- TEST_ASSERT_EQUAL("Sub suffix hex", perf_pmu__match(&test_pmu, "pmunameab"), true);
- TEST_ASSERT_EQUAL("Same suffix hex", perf_pmu__match(&test_pmu, "pmunameab23"), true);
- TEST_ASSERT_EQUAL("No suffix hex", perf_pmu__match(&test_pmu, "pmuname"), true);
- TEST_ASSERT_EQUAL("Underscore hex", perf_pmu__match(&test_pmu, "pmuname_"), false);
- TEST_ASSERT_EQUAL("Substring hex", perf_pmu__match(&test_pmu, "pmuna"), false);
+ TEST_PMU_MATCH("Diff suffix hex", "pmuname2", false);
+ TEST_PMU_MATCH("Sub suffix hex", "pmunameab", true);
+ TEST_PMU_MATCH("Same suffix hex", "pmunameab23", true);
+ TEST_PMU_MATCH("No suffix hex", "pmuname", true);
+ TEST_PMU_MATCH("Underscore hex", "pmuname_", false);
+ TEST_PMU_MATCH("Substring hex", "pmuna", false);

/*
* 2 hex chars or less are not considered suffixes so it shouldn't be
@@ -505,7 +508,7 @@ static int test__pmu_match(struct test_suite *test __maybe_unused, int subtest _
* false results here than above.
*/
test_pmu.name = "pmuname_a3";
- TEST_ASSERT_EQUAL("Diff suffix 2 hex_", perf_pmu__match(&test_pmu, "pmuname_2"), false);
+ TEST_PMU_MATCH("Diff suffix 2 hex_", "pmuname_2", false);
/*
* This one should be false, but because pmuname_a3 ends in 3 which is
* decimal, it's not possible to determine if it's a short hex suffix or
@@ -513,19 +516,19 @@ static int test__pmu_match(struct test_suite *test __maybe_unused, int subtest _
* length of decimal suffix. Run the test anyway and expect the wrong
* result. And slightly fuzzy matching shouldn't do too much harm.
*/
- TEST_ASSERT_EQUAL("Sub suffix 2 hex_", perf_pmu__match(&test_pmu, "pmuname_a"), true);
- TEST_ASSERT_EQUAL("Same suffix 2 hex_", perf_pmu__match(&test_pmu, "pmuname_a3"), true);
- TEST_ASSERT_EQUAL("No suffix 2 hex_", perf_pmu__match(&test_pmu, "pmuname"), false);
- TEST_ASSERT_EQUAL("Underscore 2 hex_", perf_pmu__match(&test_pmu, "pmuname_"), false);
- TEST_ASSERT_EQUAL("Substring 2 hex_", perf_pmu__match(&test_pmu, "pmuna"), false);
+ TEST_PMU_MATCH("Sub suffix 2 hex_", "pmuname_a", true);
+ TEST_PMU_MATCH("Same suffix 2 hex_", "pmuname_a3", true);
+ TEST_PMU_MATCH("No suffix 2 hex_", "pmuname", false);
+ TEST_PMU_MATCH("Underscore 2 hex_", "pmuname_", false);
+ TEST_PMU_MATCH("Substring 2 hex_", "pmuna", false);

test_pmu.name = "pmuname_5";
- TEST_ASSERT_EQUAL("Glob 1", perf_pmu__match(&test_pmu, "pmu*"), true);
- TEST_ASSERT_EQUAL("Glob 2", perf_pmu__match(&test_pmu, "nomatch*"), false);
- TEST_ASSERT_EQUAL("Seq 1", perf_pmu__match(&test_pmu, "pmuname_[12345]"), true);
- TEST_ASSERT_EQUAL("Seq 2", perf_pmu__match(&test_pmu, "pmuname_[67890]"), false);
- TEST_ASSERT_EQUAL("? 1", perf_pmu__match(&test_pmu, "pmuname_?"), true);
- TEST_ASSERT_EQUAL("? 2", perf_pmu__match(&test_pmu, "pmuname_1?"), false);
+ TEST_PMU_MATCH("Glob 1", "pmu*", true);
+ TEST_PMU_MATCH("Glob 2", "nomatch*", false);
+ TEST_PMU_MATCH("Seq 1", "pmuname_[12345]", true);
+ TEST_PMU_MATCH("Seq 2", "pmuname_[67890]", false);
+ TEST_PMU_MATCH("? 1", "pmuname_?", true);
+ TEST_PMU_MATCH("? 2", "pmuname_1?", false);

return TEST_OK;
}
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 1e23faa364b1..6c36b98875bc 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -1660,7 +1660,7 @@ int parse_events_multi_pmu_add_or_add_pmu(struct parse_events_state *parse_state
/* Failed to add, try wildcard expansion of event_or_pmu as a PMU name. */
while ((pmu = perf_pmus__scan(pmu)) != NULL) {
if (!parse_events__filter_pmu(parse_state, pmu) &&
- perf_pmu__match(pmu, event_or_pmu)) {
+ perf_pmu__wildcard_match(pmu, event_or_pmu)) {
bool auto_merge_stats = perf_pmu__auto_merge_stats(pmu);

if (!parse_events_add_pmu(parse_state, *listp, pmu,
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 6206c8fe2bf9..4c6f9a1a9461 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -847,21 +847,23 @@ static size_t pmu_deduped_name_len(const struct perf_pmu *pmu, const char *name,
}

/**
- * perf_pmu__match_ignoring_suffix - Does the pmu_name match tok ignoring any
- * trailing suffix? The Suffix must be in form
- * tok_{digits}, or tok{digits}.
+ * perf_pmu__match_wildcard - Does the pmu_name start with tok and is then only
+ * followed by nothing or a suffix? tok may contain
+ * part of a suffix.
* @pmu_name: The pmu_name with possible suffix.
- * @tok: The possible match to pmu_name without suffix.
+ * @tok: The wildcard argument to match.
*/
-static bool perf_pmu__match_ignoring_suffix(const char *pmu_name, const char *tok)
+static bool perf_pmu__match_wildcard(const char *pmu_name, const char *tok)
{
const char *p, *suffix;
bool has_hex = false;
+ size_t tok_len = strlen(tok);

- if (strncmp(pmu_name, tok, strlen(tok)))
+ /* Check start of pmu_name for equality. */
+ if (strncmp(pmu_name, tok, tok_len))
return false;

- suffix = p = pmu_name + strlen(tok);
+ suffix = p = pmu_name + tok_len;
if (*p == 0)
return true;

@@ -887,60 +889,80 @@ static bool perf_pmu__match_ignoring_suffix(const char *pmu_name, const char *to
}

/**
- * pmu_uncore_alias_match - does name match the PMU name?
- * @pmu_name: the json struct pmu_event name. This may lack a suffix (which
+ * perf_pmu__match_ignoring_suffix_uncore - Does the pmu_name match tok ignoring
+ * any trailing suffix on pmu_name and
+ * tok? The Suffix must be in form
+ * tok_{digits}, or tok{digits}.
+ * @pmu_name: The pmu_name with possible suffix.
+ * @tok: The possible match to pmu_name.
+ */
+static bool perf_pmu__match_ignoring_suffix_uncore(const char *pmu_name, const char *tok)
+{
+ size_t pmu_name_len, tok_len;
+
+ /* uncore_ prefixes are ignored. */
+ if (!strncmp(pmu_name, "uncore_", 7))
+ pmu_name += 7;
+ if (!strncmp(tok, "uncore_", 7))
+ tok += 7;
+
+ pmu_name_len = pmu_name_len_no_suffix(pmu_name);
+ tok_len = pmu_name_len_no_suffix(tok);
+ if (pmu_name_len != tok_len)
+ return false;
+
+ return strncmp(pmu_name, tok, pmu_name_len) == 0;
+}
+
+
+/**
+ * perf_pmu__match_wildcard_uncore - does to_match match the PMU's name?
+ * @pmu_name: The pmu->name or pmu->alias to match against.
+ * @to_match: the json struct pmu_event name. This may lack a suffix (which
* matches) or be of the form "socket,pmuname" which will match
* "socketX_pmunameY".
- * @name: a real full PMU name as from sysfs.
*/
-static bool pmu_uncore_alias_match(const char *pmu_name, const char *name)
+static bool perf_pmu__match_wildcard_uncore(const char *pmu_name, const char *to_match)
{
- char *tmp = NULL, *tok, *str;
- bool res;
+ char *mutable_to_match, *tok, *tmp;

- if (strchr(pmu_name, ',') == NULL)
- return perf_pmu__match_ignoring_suffix(name, pmu_name);
-
- str = strdup(pmu_name);
- if (!str)
+ if (!pmu_name)
return false;

- /*
- * uncore alias may be from different PMU with common prefix
- */
- tok = strtok_r(str, ",", &tmp);
- if (strncmp(pmu_name, tok, strlen(tok))) {
- res = false;
- goto out;
- }
+ /* uncore_ prefixes are ignored. */
+ if (!strncmp(pmu_name, "uncore_", 7))
+ pmu_name += 7;
+ if (!strncmp(to_match, "uncore_", 7))
+ to_match += 7;

- /*
- * Match more complex aliases where the alias name is a comma-delimited
- * list of tokens, orderly contained in the matching PMU name.
- *
- * Example: For alias "socket,pmuname" and PMU "socketX_pmunameY", we
- * match "socket" in "socketX_pmunameY" and then "pmuname" in
- * "pmunameY".
- */
- while (1) {
- char *next_tok = strtok_r(NULL, ",", &tmp);
+ if (strchr(to_match, ',') == NULL)
+ return perf_pmu__match_wildcard(pmu_name, to_match);

- name = strstr(name, tok);
- if (!name ||
- (!next_tok && !perf_pmu__match_ignoring_suffix(name, tok))) {
- res = false;
- goto out;
+ /* Process comma separated list of PMU name components. */
+ mutable_to_match = strdup(to_match);
+ if (!mutable_to_match)
+ return false;
+
+ tok = strtok_r(mutable_to_match, ",", &tmp);
+ while (tok) {
+ size_t tok_len = strlen(tok);
+
+ if (strncmp(pmu_name, tok, tok_len)) {
+ /* Mismatch between part of pmu_name and tok. */
+ free(mutable_to_match);
+ return false;
}
- if (!next_tok)
- break;
- tok = next_tok;
- name += strlen(tok);
+ /* Move pmu_name forward over tok and suffix. */
+ pmu_name += tok_len;
+ while (*pmu_name != '\0' && isdigit(*pmu_name))
+ pmu_name++;
+ if (*pmu_name == '_')
+ pmu_name++;
+
+ tok = strtok_r(NULL, ",", &tmp);
}
-
- res = true;
-out:
- free(str);
- return res;
+ free(mutable_to_match);
+ return *pmu_name == '\0';
}

bool pmu_uncore_identifier_match(const char *compat, const char *id)
@@ -1003,11 +1025,19 @@ static int pmu_add_sys_aliases_iter_fn(const struct pmu_event *pe,
{
struct perf_pmu *pmu = vdata;

- if (!pe->compat || !pe->pmu)
+ if (!pe->compat || !pe->pmu) {
+ /* No data to match. */
return 0;
+ }
+
+ if (!perf_pmu__match_wildcard_uncore(pmu->name, pe->pmu) &&
+ !perf_pmu__match_wildcard_uncore(pmu->alias_name, pe->pmu)) {
+ /* PMU name/alias_name don't match. */
+ return 0;
+ }

- if (pmu_uncore_alias_match(pe->pmu, pmu->name) &&
- pmu_uncore_identifier_match(pe->compat, pmu->id)) {
+ if (pmu_uncore_identifier_match(pe->compat, pmu->id)) {
+ /* Id matched. */
perf_pmu__new_alias(pmu,
pe->name,
pe->desc,
@@ -1016,7 +1046,6 @@ static int pmu_add_sys_aliases_iter_fn(const struct pmu_event *pe,
pe,
EVENT_SRC_SYS_JSON);
}
-
return 0;
}

@@ -1974,15 +2003,82 @@ int perf_pmu__for_each_event(struct perf_pmu *pmu, bool skip_duplicate_pmus,
return ret;
}

-bool pmu__name_match(const struct perf_pmu *pmu, const char *pmu_name)
+static bool perf_pmu___name_match(const struct perf_pmu *pmu, const char *to_match, bool wildcard)
{
- return !strcmp(pmu->name, pmu_name) ||
- (pmu->is_uncore && pmu_uncore_alias_match(pmu_name, pmu->name)) ||
+ const char *names[2] = {
+ pmu->name,
+ pmu->alias_name,
+ };
+ if (pmu->is_core) {
+ for (size_t i = 0; i < ARRAY_SIZE(names); i++) {
+ const char *name = names[i];
+
+ if (!name)
+ continue;
+
+ if (!strcmp(name, to_match)) {
+ /* Exact name match. */
+ return true;
+ }
+ }
+ if (!strcmp(to_match, "default_core")) {
+ /*
+ * jevents and tests use default_core as a marker for any core
+ * PMU as the PMU name varies across architectures.
+ */
+ return true;
+ }
+ return false;
+ }
+ if (!pmu->is_uncore) {
/*
- * jevents and tests use default_core as a marker for any core
- * PMU as the PMU name varies across architectures.
+ * PMU isn't core or uncore, some kind of broken CPU mask
+ * situation. Only match exact name.
*/
- (pmu->is_core && !strcmp(pmu_name, "default_core"));
+ for (size_t i = 0; i < ARRAY_SIZE(names); i++) {
+ const char *name = names[i];
+
+ if (!name)
+ continue;
+
+ if (!strcmp(name, to_match)) {
+ /* Exact name match. */
+ return true;
+ }
+ }
+ return false;
+ }
+ for (size_t i = 0; i < ARRAY_SIZE(names); i++) {
+ const char *name = names[i];
+
+ if (wildcard && perf_pmu__match_wildcard_uncore(name, to_match))
+ return true;
+ if (!wildcard && perf_pmu__match_ignoring_suffix_uncore(name, to_match))
+ return true;
+ }
+ return false;
+}
+
+/**
+ * perf_pmu__name_wildcard_match - Called by the jevents generated code to see
+ * if pmu matches the json to_match string.
+ * @pmu: The pmu whose name/alias to match.
+ * @to_match: The possible match to pmu_name.
+ */
+bool perf_pmu__name_wildcard_match(const struct perf_pmu *pmu, const char *to_match)
+{
+ return perf_pmu___name_match(pmu, to_match, /*wildcard=*/true);
+}
+
+/**
+ * perf_pmu__name_no_suffix_match - Does pmu's name match to_match ignoring any
+ * trailing suffix on the pmu_name and/or tok?
+ * @pmu: The pmu whose name/alias to match.
+ * @to_match: The possible match to pmu_name.
+ */
+bool perf_pmu__name_no_suffix_match(const struct perf_pmu *pmu, const char *to_match)
+{
+ return perf_pmu___name_match(pmu, to_match, /*wildcard=*/false);
}

bool perf_pmu__is_software(const struct perf_pmu *pmu)
@@ -2229,29 +2325,31 @@ void perf_pmu__warn_invalid_config(struct perf_pmu *pmu, __u64 config,
name ?: "N/A", buf, config_name, config);
}

-bool perf_pmu__match(const struct perf_pmu *pmu, const char *tok)
+bool perf_pmu__wildcard_match(const struct perf_pmu *pmu, const char *wildcard_to_match)
{
- const char *name = pmu->name;
- bool need_fnmatch = strisglob(tok);
+ const char *names[2] = {
+ pmu->name,
+ pmu->alias_name,
+ };
+ bool need_fnmatch = strisglob(wildcard_to_match);

- if (!strncmp(tok, "uncore_", 7))
- tok += 7;
- if (!strncmp(name, "uncore_", 7))
- name += 7;
+ if (!strncmp(wildcard_to_match, "uncore_", 7))
+ wildcard_to_match += 7;

- if (perf_pmu__match_ignoring_suffix(name, tok) ||
- (need_fnmatch && !fnmatch(tok, name, 0)))
- return true;
+ for (size_t i = 0; i < ARRAY_SIZE(names); i++) {
+ const char *pmu_name = names[i];

- name = pmu->alias_name;
- if (!name)
- return false;
+ if (!pmu_name)
+ continue;

- if (!strncmp(name, "uncore_", 7))
- name += 7;
+ if (!strncmp(pmu_name, "uncore_", 7))
+ pmu_name += 7;

- return perf_pmu__match_ignoring_suffix(name, tok) ||
- (need_fnmatch && !fnmatch(tok, name, 0));
+ if (perf_pmu__match_wildcard(pmu_name, wildcard_to_match) ||
+ (need_fnmatch && !fnmatch(wildcard_to_match, pmu_name, 0)))
+ return true;
+ }
+ return false;
}

int perf_pmu__event_source_devices_scnprintf(char *pathname, size_t size)
diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
index edd36c20aedc..f5306428c03f 100644
--- a/tools/perf/util/pmu.h
+++ b/tools/perf/util/pmu.h
@@ -240,7 +240,8 @@ bool perf_pmu__have_event(struct perf_pmu *pmu, const char *name);
size_t perf_pmu__num_events(struct perf_pmu *pmu);
int perf_pmu__for_each_event(struct perf_pmu *pmu, bool skip_duplicate_pmus,
void *state, pmu_event_callback cb);
-bool pmu__name_match(const struct perf_pmu *pmu, const char *pmu_name);
+bool perf_pmu__name_wildcard_match(const struct perf_pmu *pmu, const char *to_match);
+bool perf_pmu__name_no_suffix_match(const struct perf_pmu *pmu, const char *to_match);

/**
* perf_pmu_is_software - is the PMU a software PMU as in it uses the
@@ -275,7 +276,7 @@ void perf_pmu__warn_invalid_config(struct perf_pmu *pmu, __u64 config,
const char *config_name);
void perf_pmu__warn_invalid_formats(struct perf_pmu *pmu);

-bool perf_pmu__match(const struct perf_pmu *pmu, const char *tok);
+bool perf_pmu__wildcard_match(const struct perf_pmu *pmu, const char *wildcard_to_match);

int perf_pmu__event_source_devices_scnprintf(char *pathname, size_t size);
int perf_pmu__pathname_scnprintf(char *buf, size_t size,
--
2.48.1.262.g85cc9f2d1e-goog