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author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2015-02-02 22:35:06 +0300 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-02-07 16:00:10 +0300 |
commit | dd6dda27a8be563eaebb3f38b1d1d50920bb7991 (patch) | |
tree | 8b7ff4c2bb077665ad83897be7bfff7b5dee5a6b | |
parent | a9edf60749a9483341facfa7c28bcf8afb3c8311 (diff) | |
download | linux-dd6dda27a8be563eaebb3f38b1d1d50920bb7991.tar.xz |
tools lib api fs: Add {tracefs,debugfs}_configured() functions
Add tracefs_configured() to return true if tracefs is configured in the
kernel (succeeds to find tracefs), and debugfs_configured() if debugfs
is configured in the kernel (succeeds to find debugfs).
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20150202193553.190606690@goodmis.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r-- | tools/lib/api/fs/debugfs.c | 8 | ||||
-rw-r--r-- | tools/lib/api/fs/debugfs.h | 1 | ||||
-rw-r--r-- | tools/lib/api/fs/findfs.h | 2 | ||||
-rw-r--r-- | tools/lib/api/fs/tracefs.c | 8 | ||||
-rw-r--r-- | tools/lib/api/fs/tracefs.h | 1 |
5 files changed, 20 insertions, 0 deletions
diff --git a/tools/lib/api/fs/debugfs.c b/tools/lib/api/fs/debugfs.c index 07d74b03d828..8305b3e9d48e 100644 --- a/tools/lib/api/fs/debugfs.c +++ b/tools/lib/api/fs/debugfs.c @@ -3,8 +3,11 @@ #include <stdio.h> #include <stdlib.h> #include <string.h> +#include <unistd.h> #include <stdbool.h> #include <sys/vfs.h> +#include <sys/types.h> +#include <sys/stat.h> #include <sys/mount.h> #include <linux/kernel.h> @@ -24,6 +27,11 @@ static const char * const debugfs_known_mountpoints[] = { static bool debugfs_found; +bool debugfs_configured(void) +{ + return debugfs_find_mountpoint() != NULL; +} + /* find the path to the mounted debugfs */ const char *debugfs_find_mountpoint(void) { diff --git a/tools/lib/api/fs/debugfs.h b/tools/lib/api/fs/debugfs.h index 1074ac81358e..455023698d2b 100644 --- a/tools/lib/api/fs/debugfs.h +++ b/tools/lib/api/fs/debugfs.h @@ -11,6 +11,7 @@ #define PERF_DEBUGFS_ENVIRONMENT "PERF_DEBUGFS_DIR" #endif +bool debugfs_configured(void); const char *debugfs_find_mountpoint(void); char *debugfs_mount(const char *mountpoint); diff --git a/tools/lib/api/fs/findfs.h b/tools/lib/api/fs/findfs.h index 9e7d876791e1..b6f5d05acc42 100644 --- a/tools/lib/api/fs/findfs.h +++ b/tools/lib/api/fs/findfs.h @@ -1,6 +1,8 @@ #ifndef __API_FINDFS_H__ #define __API_FINDFS_H__ +#include <stdbool.h> + #define _STR(x) #x #define STR(x) _STR(x) diff --git a/tools/lib/api/fs/tracefs.c b/tools/lib/api/fs/tracefs.c index ef40d15821e9..e4aa9688b71e 100644 --- a/tools/lib/api/fs/tracefs.c +++ b/tools/lib/api/fs/tracefs.c @@ -2,8 +2,11 @@ #include <stdio.h> #include <stdlib.h> #include <string.h> +#include <unistd.h> #include <stdbool.h> #include <sys/vfs.h> +#include <sys/types.h> +#include <sys/stat.h> #include <sys/mount.h> #include <linux/kernel.h> @@ -25,6 +28,11 @@ static const char * const tracefs_known_mountpoints[] = { static bool tracefs_found; +bool tracefs_configured(void) +{ + return tracefs_find_mountpoint() != NULL; +} + /* find the path to the mounted tracefs */ const char *tracefs_find_mountpoint(void) { diff --git a/tools/lib/api/fs/tracefs.h b/tools/lib/api/fs/tracefs.h index e6f7f5183c87..da780ac49acb 100644 --- a/tools/lib/api/fs/tracefs.h +++ b/tools/lib/api/fs/tracefs.h @@ -11,6 +11,7 @@ #define PERF_TRACEFS_ENVIRONMENT "PERF_TRACEFS_DIR" #endif +bool tracefs_configured(void); const char *tracefs_find_mountpoint(void); int tracefs_valid_mountpoint(const char *debugfs); char *tracefs_mount(const char *mountpoint); |