Commit-ID: d854861c4292a4e675a5d3bfd862c5f7421c81e8
Gitweb: http://git.kernel.org/tip/d854861c4292a4e675a5d3bfd862c5f7421c81e8
Author: Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Tue, 4 Jan 2011 00:16:20 -0200
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Tue, 4 Jan 2011 00:32:06 -0200
perf test: Add test for counting open syscalls
To test the use of the perf_evsel class on something other than
the tools from where we refactored code to create it.
It calls open() N times and then checks if the event created to
monitor it returns N events.
[acme@felicio linux]$ perf test
1: vmlinux symtab matches kallsyms: Ok
2: detect open syscall event: Ok
[acme@felicio linux]$
It does.
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Han Pingtian <phan@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-test.c | 83 +++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 83 insertions(+), 0 deletions(-)
diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c
index e0c3f47..6c99152 100644
--- a/tools/perf/builtin-test.c
+++ b/tools/perf/builtin-test.c
@@ -234,6 +234,85 @@ out:
return err;
}
+#include "util/evsel.h"
+#include <sys/types.h>
+
+static int trace_event__id(const char *event_name)
+{
+ char *filename;
+ int err = -1, fd;
+
+ if (asprintf(&filename,
+ "/sys/kernel/debug/tracing/events/syscalls/%s/id",
+ event_name) < 0)
+ return -1;
+
+ fd = open(filename, O_RDONLY);
+ if (fd >= 0) {
+ char id[16];
+ if (read(fd, id, sizeof(id)) > 0)
+ err = atoi(id);
+ close(fd);
+ }
+
+ free(filename);
+ return err;
+}
+
+static int test__open_syscall_event(void)
+{
+ int ...
