X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=tests%2Fperf%2Ffind_event.c;fp=tests%2Fperf%2Ffind_event.c;h=5aacd5911742a1081f55750a916260627ef28904;hp=0000000000000000000000000000000000000000;hb=6faa26cafc21ce8d5b8f20ae4d2682092fd74b03;hpb=8d12820e6a01d686c2fd135bbbef788991b5f445

diff --git a/tests/perf/find_event.c b/tests/perf/find_event.c
new file mode 100644
index 000000000..5aacd5911
--- /dev/null
+++ b/tests/perf/find_event.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c)  2016 Julien Desfossez <jdesfossez@efficios.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * as published by the Free Software Foundation; only version 2
+ * of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <stdio.h>
+#include <perfmon/pfmlib.h>
+#include <string.h>
+
+int main(int argc, char **argv)
+{
+	int ret, i;
+	unsigned int j;
+	pfm_pmu_info_t pinfo;
+
+	if (argc != 2) {
+		fprintf(stderr, "Usage: %s <pmu counter to find>\n"
+				"ex: %s UNHALTED_REFERENCE_CYCLES\n"
+				"Returns the first occurence it finds with "
+				"return code 0.\n"
+				"If not found returns 1, on error returns -1\n",
+				argv[0], argv[0]);
+		ret = -1;
+		goto end;
+	}
+
+	memset(&pinfo, 0, sizeof(pinfo));
+	pinfo.size = sizeof(pinfo);
+
+	ret = pfm_initialize();
+	if (ret != PFM_SUCCESS) {
+		fprintf(stderr, "Failed to initialise libpfm: %s",
+				pfm_strerror(ret));
+		ret = -1;
+		goto end;
+	}
+
+	pfm_for_all_pmus(j) {
+		ret = pfm_get_pmu_info(j, &pinfo);
+		if (ret != PFM_SUCCESS) {
+			continue;
+		}
+
+		for (i = pinfo.first_event; i != -1; i = pfm_get_event_next(i)) {
+			pfm_event_info_t info =
+					{ .size = sizeof(pfm_event_info_t) };
+
+			ret = pfm_get_event_info(i, PFM_OS_NONE, &info);
+			if (ret != PFM_SUCCESS) {
+				fprintf(stderr, "Cannot get event info: %s\n",
+						pfm_strerror(ret));
+				ret = -1;
+				goto end;
+			}
+
+			if (info.pmu != j) {
+				continue;
+			}
+
+			if (strcmp(info.name, argv[1]) == 0) {
+				fprintf(stdout, "r%" PRIx64 "\n", info.code);
+				ret = 0;
+				goto end;
+			}
+		}
+	}
+
+	ret = 1;
+
+end:
+	return ret;
+}