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-rw-r--r--tools/perf/util/pmus.c115
1 files changed, 111 insertions, 4 deletions
diff --git a/tools/perf/util/pmus.c b/tools/perf/util/pmus.c
index 16505071d3..6907e3e7fb 100644
--- a/tools/perf/util/pmus.c
+++ b/tools/perf/util/pmus.c
@@ -16,6 +16,7 @@
#include "pmus.h"
#include "pmu.h"
#include "print-events.h"
+#include "strbuf.h"
/*
* core_pmus: A PMU belongs to core_pmus if it's name is "cpu" or it's sysfs
@@ -123,7 +124,8 @@ struct perf_pmu *perf_pmus__find(const char *name)
return NULL;
dirfd = perf_pmu__event_source_devices_fd();
- pmu = perf_pmu__lookup(core_pmu ? &core_pmus : &other_pmus, dirfd, name);
+ pmu = perf_pmu__lookup(core_pmu ? &core_pmus : &other_pmus, dirfd, name,
+ /*eager_load=*/false);
close(dirfd);
if (!pmu) {
@@ -158,7 +160,8 @@ static struct perf_pmu *perf_pmu__find2(int dirfd, const char *name)
if (core_pmu && read_sysfs_core_pmus)
return NULL;
- return perf_pmu__lookup(core_pmu ? &core_pmus : &other_pmus, dirfd, name);
+ return perf_pmu__lookup(core_pmu ? &core_pmus : &other_pmus, dirfd, name,
+ /*eager_load=*/false);
}
static int pmus_cmp(void *priv __maybe_unused,
@@ -474,8 +477,8 @@ void perf_pmus__print_pmu_events(const struct print_callbacks *print_cb, void *p
qsort(aliases, len, sizeof(struct sevent), cmp_sevent);
for (int j = 0; j < len; j++) {
/* Skip duplicates */
- if (j > 0 && pmu_alias_is_duplicate(&aliases[j], &aliases[j - 1]))
- continue;
+ if (j < len - 1 && pmu_alias_is_duplicate(&aliases[j], &aliases[j + 1]))
+ goto free;
print_cb->print_event(print_state,
aliases[j].pmu_name,
@@ -488,6 +491,7 @@ void perf_pmus__print_pmu_events(const struct print_callbacks *print_cb, void *p
aliases[j].desc,
aliases[j].long_desc,
aliases[j].encoding_desc);
+free:
zfree(&aliases[j].name);
zfree(&aliases[j].alias);
zfree(&aliases[j].scale_unit);
@@ -503,6 +507,99 @@ void perf_pmus__print_pmu_events(const struct print_callbacks *print_cb, void *p
zfree(&aliases);
}
+struct build_format_string_args {
+ struct strbuf short_string;
+ struct strbuf long_string;
+ int num_formats;
+};
+
+static int build_format_string(void *state, const char *name, int config,
+ const unsigned long *bits)
+{
+ struct build_format_string_args *args = state;
+ unsigned int num_bits;
+ int ret1, ret2 = 0;
+
+ (void)config;
+ args->num_formats++;
+ if (args->num_formats > 1) {
+ strbuf_addch(&args->long_string, ',');
+ if (args->num_formats < 4)
+ strbuf_addch(&args->short_string, ',');
+ }
+ num_bits = bits ? bitmap_weight(bits, PERF_PMU_FORMAT_BITS) : 0;
+ if (num_bits <= 1) {
+ ret1 = strbuf_addf(&args->long_string, "%s", name);
+ if (args->num_formats < 4)
+ ret2 = strbuf_addf(&args->short_string, "%s", name);
+ } else if (num_bits > 8) {
+ ret1 = strbuf_addf(&args->long_string, "%s=0..0x%llx", name,
+ ULLONG_MAX >> (64 - num_bits));
+ if (args->num_formats < 4) {
+ ret2 = strbuf_addf(&args->short_string, "%s=0..0x%llx", name,
+ ULLONG_MAX >> (64 - num_bits));
+ }
+ } else {
+ ret1 = strbuf_addf(&args->long_string, "%s=0..%llu", name,
+ ULLONG_MAX >> (64 - num_bits));
+ if (args->num_formats < 4) {
+ ret2 = strbuf_addf(&args->short_string, "%s=0..%llu", name,
+ ULLONG_MAX >> (64 - num_bits));
+ }
+ }
+ return ret1 < 0 ? ret1 : (ret2 < 0 ? ret2 : 0);
+}
+
+void perf_pmus__print_raw_pmu_events(const struct print_callbacks *print_cb, void *print_state)
+{
+ bool skip_duplicate_pmus = print_cb->skip_duplicate_pmus(print_state);
+ struct perf_pmu *(*scan_fn)(struct perf_pmu *);
+ struct perf_pmu *pmu = NULL;
+
+ if (skip_duplicate_pmus)
+ scan_fn = perf_pmus__scan_skip_duplicates;
+ else
+ scan_fn = perf_pmus__scan;
+
+ while ((pmu = scan_fn(pmu)) != NULL) {
+ struct build_format_string_args format_args = {
+ .short_string = STRBUF_INIT,
+ .long_string = STRBUF_INIT,
+ .num_formats = 0,
+ };
+ int len = pmu_name_len_no_suffix(pmu->name, /*num=*/NULL);
+ const char *desc = "(see 'man perf-list' or 'man perf-record' on how to encode it)";
+
+ if (!pmu->is_core)
+ desc = NULL;
+
+ strbuf_addf(&format_args.short_string, "%.*s/", len, pmu->name);
+ strbuf_addf(&format_args.long_string, "%.*s/", len, pmu->name);
+ perf_pmu__for_each_format(pmu, &format_args, build_format_string);
+
+ if (format_args.num_formats > 3)
+ strbuf_addf(&format_args.short_string, ",.../modifier");
+ else
+ strbuf_addf(&format_args.short_string, "/modifier");
+
+ strbuf_addf(&format_args.long_string, "/modifier");
+ print_cb->print_event(print_state,
+ /*topic=*/NULL,
+ /*pmu_name=*/NULL,
+ format_args.short_string.buf,
+ /*event_alias=*/NULL,
+ /*scale_unit=*/NULL,
+ /*deprecated=*/false,
+ "Raw event descriptor",
+ desc,
+ /*long_desc=*/NULL,
+ format_args.long_string.buf);
+
+ strbuf_release(&format_args.short_string);
+ strbuf_release(&format_args.long_string);
+ }
+}
+
bool perf_pmus__have_event(const char *pname, const char *name)
{
struct perf_pmu *pmu = perf_pmus__find(pname);
@@ -602,3 +699,13 @@ struct perf_pmu *perf_pmus__find_core_pmu(void)
{
return perf_pmus__scan_core(NULL);
}
+
+struct perf_pmu *perf_pmus__add_test_pmu(int test_sysfs_dirfd, const char *name)
+{
+ /*
+ * Some PMU functions read from the sysfs mount point, so care is
+ * needed, hence passing the eager_load flag to load things like the
+ * format files.
+ */
+ return perf_pmu__lookup(&other_pmus, test_sysfs_dirfd, name, /*eager_load=*/true);
+}