Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

perf/core improvements and fixes:

 * Improve 'perf bench' docs, by Namhyung Kim

 * Fix build when O= is not used, from David Ahern

 * Fix cross compilation build, from Namhyung Kim

 * Fix pipe mode when callchains are used, from David Ahern

 * Follow .gnu_debuglink section to find separate symbols, from Pierre-Loup A. Griffais

 * Fix 'perf test' raw events entries, from Jiri Olsa

 * Use the events description in the perf.data file, not the sysfs ones.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 56 insertions, 0 deletions

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 6b305fb..f5baff1 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -14,6 +14,7 @@
 #include "sort.h"
 #include "util.h"
 #include "cpumap.h"
+#include "event-parse.h"
 
 static int perf_session__open(struct perf_session *self, bool force)
 {
@@ -1610,3 +1611,58 @@ void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
 	perf_header__fprintf_info(session, fp, full);
 	fprintf(fp, "# ========\n#\n");
 }
+
+
+int __perf_session__set_tracepoints_handlers(struct perf_session *session,
+					     const struct perf_evsel_str_handler *assocs,
+					     size_t nr_assocs)
+{
+	struct perf_evlist *evlist = session->evlist;
+	struct event_format *format;
+	struct perf_evsel *evsel;
+	char *tracepoint, *name;
+	size_t i;
+	int err;
+
+	for (i = 0; i < nr_assocs; i++) {
+		err = -ENOMEM;
+		tracepoint = strdup(assocs[i].name);
+		if (tracepoint == NULL)
+			goto out;
+
+		err = -ENOENT;
+		name = strchr(tracepoint, ':');
+		if (name == NULL)
+			goto out_free;
+
+		*name++ = '\0';
+		format = pevent_find_event_by_name(session->pevent,
+						   tracepoint, name);
+		if (format == NULL) {
+			/*
+			 * Adding a handler for an event not in the session,
+			 * just ignore it.
+			 */
+			goto next;
+		}
+
+		evsel = perf_evlist__find_tracepoint_by_id(evlist, format->id);
+		if (evsel == NULL)
+			goto next;
+
+		err = -EEXIST;
+		if (evsel->handler.func != NULL)
+			goto out_free;
+		evsel->handler.func = assocs[i].handler;
+next:
+		free(tracepoint);
+	}
+
+	err = 0;
+out:
+	return err;
+
+out_free:
+	free(tracepoint);
+	goto out;
+}