Commit-ID: dd6dda27a8be563eaebb3f38b1d1d50920bb7991
Gitweb: http://git.kernel.org/tip/dd6dda27a8be563eaebb3f38b1d1d50920bb7991
Author: Steven Rostedt (Red Hat) <rostedt@xxxxxxxxxxx>
AuthorDate: Mon, 2 Feb 2015 14:35:06 -0500
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Sat, 7 Feb 2015 14:00:10 +0100
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@xxxxxxxxxxx>
Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@xxxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/20150202193553.190606690@xxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/lib/api/fs/debugfs.c | 8 ++++++++
tools/lib/api/fs/debugfs.h | 1 +
tools/lib/api/fs/findfs.h | 2 ++
tools/lib/api/fs/tracefs.c | 8 ++++++++
tools/lib/api/fs/tracefs.h | 1 +
5 files changed, 20 insertions(+)
diff --git a/tools/lib/api/fs/debugfs.c b/tools/lib/api/fs/debugfs.c
index 07d74b0..8305b3e 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 1074ac8..4550236 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 9e7d876..b6f5d05 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 ef40d15..e4aa968 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 e6f7f51..da780ac 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);
--
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