Provide a small tool which translates an event string + modifiers to a raw
event code for use with the perf tool.
This example is very simple and takes a single event string as an argument.
Signed-off-by: Corey Ashford <cjash...@us.ibm.com>
---
perf_examples/Makefile | 2 +-
perf_examples/evt2raw.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 75 insertions(+), 1 deletions(-)
create mode 100644 perf_examples/evt2raw.c
diff --git a/perf_examples/Makefile b/perf_examples/Makefile
index 1d353d4..8ebb290 100644
--- a/perf_examples/Makefile
+++ b/perf_examples/Makefile
@@ -55,7 +55,7 @@ ifeq ($(SYS),Linux)
LPC_UTILS=perf_util.o
TARGETS+=self self_basic self_count task task_attach_timeout syst \
notify_self notify_group task_smpl self_smpl_multi \
- self_pipe syst_count task_cpu syst_smpl
+ self_pipe syst_count task_cpu syst_smpl evt2raw
#XTRA += rtop
endif
diff --git a/perf_examples/evt2raw.c b/perf_examples/evt2raw.c
new file mode 100644
index 0000000..917420f
--- /dev/null
+++ b/perf_examples/evt2raw.c
@@ -0,0 +1,74 @@
+/*
+ * evt2raw.c - example which converts an event string (event + modifiers) to
+ * a raw event code usable by the perf tool.
+ *
+ * Copyright (c) 2010 IBM Corp.
+ * Contributed by Corey Ashford <cjash...@us.ibm.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies
+ * of the Software, and to permit persons to whom the Software is furnished to
do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR
A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <perfmon/pfmlib_perf_event.h>
+
+static void
+usage(void)
+{
+ printf("usage: evt2raw <event>\n"
+ "<event> is the symbolic event, including modifiers, to "
+ "translate to a raw code.\n");
+}
+
+int
+main(int argc, char **argv)
+{
+ int ret;
+ struct perf_event_attr pea;
+ char *event_str;
+
+ if (argc != 2) {
+ usage();
+ return 1;
+ }
+ event_str = argv[1];
+
+ ret = pfm_initialize();
+ if (ret != PFM_SUCCESS) {
+ printf("Internal error: pfm_initialize returned %s\n",
+ pfm_strerror(ret));
+ return 1;
+ }
+
+ ret = pfm_get_perf_event_encoding(event_str, PFM_PLM0|PFM_PLM3, &pea,
+ NULL, NULL);
+ if (ret != PFM_SUCCESS) {
+ printf("Error: pfm_get_perf_encoding returned %s\n",
+ pfm_strerror(ret));
+ return 1;
+ }
+
+ if (pea.type != PERF_TYPE_RAW) {
+ printf("Error: %s is not a raw hardware event\n", event_str);
+ return 1;
+ }
+
+ printf("r%llx\n", pea.config);
+
+ return 0;
+}
--
1.7.0.4
------------------------------------------------------------------------------
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and start using them to simplify application deployment and
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