perf evsel: Add/use accessor for tp_format

Add an accessor function for tp_format. Rather than search+replace
uses try to use a variable and reuse it. Add additional NULL checks
when accessing/using the value. Make sure the PTR_ERR is nulled out on
error path in evsel__newtp_idx.

Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ben Gainey <ben.gainey@arm.com>
Cc: Colin Ian King <colin.i.king@gmail.com>
Cc: Dominique Martinet <asmadeus@codewreck.org>
Cc: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: Paran Lee <p4ranlee@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steinar H. Gunderson <sesse@google.com>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Thomas Falcon <thomas.falcon@intel.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Yang Jihong <yangjihong@bytedance.com>
Cc: Yang Li <yang.lee@linux.alibaba.com>
Cc: Ze Gao <zegao2021@gmail.com>
Cc: Zixian Cai <fzczx123@gmail.com>
Cc: zhaimingbing <zhaimingbing@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20241118225345.889810-6-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 21 insertions, 12 deletions

diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 9dd60c7869a2..3dd33721823f 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -1038,17 +1038,19 @@ static char *get_trace_output(struct hist_entry *he)
 		.data = he->raw_data,
 		.size = he->raw_size,
 	};
+	struct tep_event *tp_format;
 
 	evsel = hists_to_evsel(he->hists);
 
 	trace_seq_init(&seq);
-	if (symbol_conf.raw_trace) {
-		tep_print_fields(&seq, he->raw_data, he->raw_size,
-				 evsel->tp_format);
-	} else {
-		tep_print_event(evsel->tp_format->tep,
-				&seq, &rec, "%s", TEP_PRINT_INFO);
+	tp_format = evsel__tp_format(evsel);
+	if (tp_format) {
+		if (symbol_conf.raw_trace)
+			tep_print_fields(&seq, he->raw_data, he->raw_size, tp_format);
+		else
+			tep_print_event(tp_format->tep, &seq, &rec, "%s", TEP_PRINT_INFO);
 	}
+
 	/*
 	 * Trim the buffer, it starts at 4KB and we're not going to
 	 * add anything more to this buffer.
@@ -3293,9 +3295,8 @@ static int __dynamic_dimension__add(struct evsel *evsel,
 static int add_evsel_fields(struct evsel *evsel, bool raw_trace, int level)
 {
 	int ret;
-	struct tep_format_field *field;
-
-	field = evsel->tp_format->format.fields;
+	struct tep_event *tp_format = evsel__tp_format(evsel);
+	struct tep_format_field *field = tp_format ? tp_format->format.fields : NULL;
 	while (field) {
 		ret = __dynamic_dimension__add(evsel, field, raw_trace, level);
 		if (ret < 0)
@@ -3328,13 +3329,19 @@ static int add_all_matching_fields(struct evlist *evlist,
 {
 	int ret = -ESRCH;
 	struct evsel *evsel;
-	struct tep_format_field *field;
 
 	evlist__for_each_entry(evlist, evsel) {
+		struct tep_event *tp_format;
+		struct tep_format_field *field;
+
 		if (evsel->core.attr.type != PERF_TYPE_TRACEPOINT)
 			continue;
 
-		field = tep_find_any_field(evsel->tp_format, field_name);
+		tp_format = evsel__tp_format(evsel);
+		if (tp_format == NULL)
+			continue;
+
+		field = tep_find_any_field(tp_format, field_name);
 		if (field == NULL)
 			continue;
 
@@ -3416,7 +3423,9 @@ static int add_dynamic_entry(struct evlist *evlist, const char *tok,
 	if (!strcmp(field_name, "*")) {
 		ret = add_evsel_fields(evsel, raw_trace, level);
 	} else {
-		struct tep_format_field *field = tep_find_any_field(evsel->tp_format, field_name);
+		struct tep_event *tp_format = evsel__tp_format(evsel);
+		struct tep_format_field *field =
+			tp_format ? tep_find_any_field(tp_format, field_name) : NULL;
 
 		if (field == NULL) {
 			pr_debug("Cannot find event field for %s.%s\n",