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authorIan Rogers <irogers@google.com>2020-05-07 15:06:04 -0700
committerArnaldo Carvalho de Melo <acme@redhat.com>2020-05-28 10:03:25 -0300
commitb027cc6fdf1bb41f4572e99e96ff95bbf8cb5783 (patch)
tree36555274c7a903b656f214c65d2b434a4b92d392
parent63b5930f4a4e8b5cce25f4ad78561f28b129aaac (diff)
perf c2c: Fix 'perf c2c record -e list' to show the default events used
When the event is passed as list, the default events should be listed as per 'perf mem record -e list'. Previous behavior is: $ perf c2c record -e list failed: event 'list' not found, use '-e list' to get list of available events Usage: perf c2c record [<options>] [<command>] or: perf c2c record [<options>] -- <command> [<options>] -e, --event <event> event selector. Use 'perf mem record -e list' to list available events $ New behavior: $ perf c2c record -e list ldlat-loads : available ldlat-stores : available v3: is a rebase. v2: addresses review comments by Jiri Olsa. https://lore.kernel.org/lkml/20191127081844.GH32367@krava/ Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20200507220604.3391-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r--tools/perf/Documentation/perf-c2c.txt2
-rw-r--r--tools/perf/builtin-c2c.c9
-rw-r--r--tools/perf/builtin-mem.c24
-rw-r--r--tools/perf/util/mem-events.c15
-rw-r--r--tools/perf/util/mem-events.h2
5 files changed, 33 insertions, 19 deletions
diff --git a/tools/perf/Documentation/perf-c2c.txt b/tools/perf/Documentation/perf-c2c.txt
index 2133eb320cb0..98efdab5fbd4 100644
--- a/tools/perf/Documentation/perf-c2c.txt
+++ b/tools/perf/Documentation/perf-c2c.txt
@@ -40,7 +40,7 @@ RECORD OPTIONS
--------------
-e::
--event=::
- Select the PMU event. Use 'perf mem record -e list'
+ Select the PMU event. Use 'perf c2c record -e list'
to list available events.
-v::
diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 1baf4cae086f..d617d5682c68 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -2887,8 +2887,15 @@ static int parse_record_events(const struct option *opt,
{
bool *event_set = (bool *) opt->value;
+ if (!strcmp(str, "list")) {
+ perf_mem_events__list();
+ exit(0);
+ }
+ if (perf_mem_events__parse(str))
+ exit(-1);
+
*event_set = true;
- return perf_mem_events__parse(str);
+ return 0;
}
diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c
index 68a7eb84561a..3523279af6af 100644
--- a/tools/perf/builtin-mem.c
+++ b/tools/perf/builtin-mem.c
@@ -38,26 +38,16 @@ static int parse_record_events(const struct option *opt,
const char *str, int unset __maybe_unused)
{
struct perf_mem *mem = *(struct perf_mem **)opt->value;
- int j;
- if (strcmp(str, "list")) {
- if (!perf_mem_events__parse(str)) {
- mem->operation = 0;
- return 0;
- }
- exit(-1);
+ if (!strcmp(str, "list")) {
+ perf_mem_events__list();
+ exit(0);
}
+ if (perf_mem_events__parse(str))
+ exit(-1);
- for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
- struct perf_mem_event *e = &perf_mem_events[j];
-
- fprintf(stderr, "%-13s%-*s%s\n",
- e->tag,
- verbose > 0 ? 25 : 0,
- verbose > 0 ? perf_mem_events__name(j) : "",
- e->supported ? ": available" : "");
- }
- exit(0);
+ mem->operation = 0;
+ return 0;
}
static const char * const __usage[] = {
diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c
index aa29589f6904..ea0af0bc4314 100644
--- a/tools/perf/util/mem-events.c
+++ b/tools/perf/util/mem-events.c
@@ -103,6 +103,21 @@ int perf_mem_events__init(void)
return found ? 0 : -ENOENT;
}
+void perf_mem_events__list(void)
+{
+ int j;
+
+ for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
+ struct perf_mem_event *e = &perf_mem_events[j];
+
+ fprintf(stderr, "%-13s%-*s%s\n",
+ e->tag,
+ verbose > 0 ? 25 : 0,
+ verbose > 0 ? perf_mem_events__name(j) : "",
+ e->supported ? ": available" : "");
+ }
+}
+
static const char * const tlb_access[] = {
"N/A",
"HIT",
diff --git a/tools/perf/util/mem-events.h b/tools/perf/util/mem-events.h
index f1389bdae7bf..904dad34f7f7 100644
--- a/tools/perf/util/mem-events.h
+++ b/tools/perf/util/mem-events.h
@@ -39,6 +39,8 @@ int perf_mem_events__init(void);
char *perf_mem_events__name(int i);
+void perf_mem_events__list(void);
+
struct mem_info;
int perf_mem__tlb_scnprintf(char *out, size_t sz, struct mem_info *mem_info);
int perf_mem__lvl_scnprintf(char *out, size_t sz, struct mem_info *mem_info);