diff options
| -rw-r--r-- | tools/perf/perf.c | 2 | ||||
| -rw-r--r-- | tools/perf/util/debugfs.c | 16 | ||||
| -rw-r--r-- | tools/perf/util/debugfs.h | 2 |
3 files changed, 9 insertions, 11 deletions
diff --git a/tools/perf/perf.c b/tools/perf/perf.c index 873e55fab375..fc89005c3e51 100644 --- a/tools/perf/perf.c +++ b/tools/perf/perf.c @@ -388,7 +388,7 @@ 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) { - const char *path = debugfs_find_mountpoint(); + const char *path = debugfs_mount(NULL); if (path) strncpy(debugfs_mntpt, path, sizeof(debugfs_mntpt)); diff --git a/tools/perf/util/debugfs.c b/tools/perf/util/debugfs.c index 06b73ee02c49..1f805fde5fd4 100644 --- a/tools/perf/util/debugfs.c +++ b/tools/perf/util/debugfs.c @@ -106,16 +106,14 @@ int debugfs_valid_entry(const char *path) return 0; } -/* mount the debugfs somewhere */ +/* mount the debugfs somewhere if it's not mounted */ -int debugfs_mount(const char *mountpoint) +char *debugfs_mount(const char *mountpoint) { - char mountcmd[128]; - /* see if it's already mounted */ if (debugfs_find_mountpoint()) { debugfs_premounted = 1; - return 0; + return debugfs_mountpoint; } /* if not mounted and no argument */ @@ -127,13 +125,13 @@ int debugfs_mount(const char *mountpoint) mountpoint = "/sys/kernel/debug"; } + if (mount(NULL, mountpoint, "debugfs", 0, NULL) < 0) + return NULL; + /* save the mountpoint */ strncpy(debugfs_mountpoint, mountpoint, sizeof(debugfs_mountpoint)); - /* mount it */ - snprintf(mountcmd, sizeof(mountcmd), - "/bin/mount -t debugfs debugfs %s", mountpoint); - return system(mountcmd); + return debugfs_mountpoint; } /* umount the debugfs */ diff --git a/tools/perf/util/debugfs.h b/tools/perf/util/debugfs.h index 3cd14f9ae784..83a02879745f 100644 --- a/tools/perf/util/debugfs.h +++ b/tools/perf/util/debugfs.h @@ -15,7 +15,7 @@ extern const char *debugfs_find_mountpoint(void); extern int debugfs_valid_mountpoint(const char *debugfs); extern int debugfs_valid_entry(const char *path); -extern int debugfs_mount(const char *mountpoint); +extern char *debugfs_mount(const char *mountpoint); extern int debugfs_umount(void); extern int debugfs_write(const char *entry, const char *value); extern int debugfs_read(const char *entry, char *buffer, size_t size); |