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-rw-r--r--tools/perf/perf.c44
-rw-r--r--tools/perf/util/parse-events.c17
2 files changed, 10 insertions, 51 deletions
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index 624e62d9d1e..601f403fbda 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -14,6 +14,7 @@
#include "util/run-command.h"
#include "util/parse-events.h"
#include "util/string.h"
+#include "util/debugfs.h"
const char perf_usage_string[] =
"perf [--version] [--help] COMMAND [ARGS]";
@@ -382,45 +383,12 @@ static int run_argv(int *argcp, const char ***argv)
/* mini /proc/mounts parser: searching for "^blah /mount/point debugfs" */
static void get_debugfs_mntpt(void)
{
- FILE *file;
- char fs_type[100];
- char debugfs[MAXPATHLEN];
+ const char *path = debugfs_find_mountpoint();
- /*
- * try the standard location
- */
- if (valid_debugfs_mount("/sys/kernel/debug/") == 0) {
- strcpy(debugfs_mntpt, "/sys/kernel/debug/");
- return;
- }
-
- /*
- * try the sane location
- */
- if (valid_debugfs_mount("/debug/") == 0) {
- strcpy(debugfs_mntpt, "/debug/");
- return;
- }
-
- /*
- * give up and parse /proc/mounts
- */
- file = fopen("/proc/mounts", "r");
- if (file == NULL)
- return;
-
- while (fscanf(file, "%*s %"
- STR(MAXPATHLEN)
- "s %99s %*s %*d %*d\n",
- debugfs, fs_type) == 2) {
- if (strcmp(fs_type, "debugfs") == 0)
- break;
- }
- fclose(file);
- if (strcmp(fs_type, "debugfs") == 0) {
- strncpy(debugfs_mntpt, debugfs, MAXPATHLEN);
- debugfs_mntpt[MAXPATHLEN - 1] = '\0';
- }
+ if (path)
+ strncpy(debugfs_mntpt, path, sizeof(debugfs_mntpt));
+ else
+ debugfs_mntpt[0] = '\0';
}
int main(int argc, const char **argv)
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 31baa5a6036..097938a96d7 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -7,6 +7,7 @@
#include "string.h"
#include "cache.h"
#include "header.h"
+#include "debugfs.h"
int nr_counters;
@@ -149,16 +150,6 @@ static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
#define MAX_EVENT_LENGTH 512
-int valid_debugfs_mount(const char *debugfs)
-{
- struct statfs st_fs;
-
- if (statfs(debugfs, &st_fs) < 0)
- return -ENOENT;
- else if (st_fs.f_type != (long) DEBUGFS_MAGIC)
- return -ENOENT;
- return 0;
-}
struct tracepoint_path *tracepoint_id_to_path(u64 config)
{
@@ -171,7 +162,7 @@ struct tracepoint_path *tracepoint_id_to_path(u64 config)
char evt_path[MAXPATHLEN];
char dir_path[MAXPATHLEN];
- if (valid_debugfs_mount(debugfs_path))
+ if (debugfs_valid_mountpoint(debugfs_path))
return NULL;
sys_dir = opendir(debugfs_path);
@@ -510,7 +501,7 @@ static enum event_result parse_tracepoint_event(const char **strp,
char sys_name[MAX_EVENT_LENGTH];
unsigned int sys_length, evt_length;
- if (valid_debugfs_mount(debugfs_path))
+ if (debugfs_valid_mountpoint(debugfs_path))
return 0;
evt_name = strchr(*strp, ':');
@@ -788,7 +779,7 @@ static void print_tracepoint_events(void)
char evt_path[MAXPATHLEN];
char dir_path[MAXPATHLEN];
- if (valid_debugfs_mount(debugfs_path))
+ if (debugfs_valid_mountpoint(debugfs_path))
return;
sys_dir = opendir(debugfs_path);