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authorSteven Rostedt (Red Hat) <rostedt@goodmis.org>2015-02-02 14:35:06 -0500
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-02-07 14:00:10 +0100
commitdd6dda27a8be563eaebb3f38b1d1d50920bb7991 (patch)
tree8b7ff4c2bb077665ad83897be7bfff7b5dee5a6b /tools/lib/api
parenta9edf60749a9483341facfa7c28bcf8afb3c8311 (diff)
downloadblackbird-op-linux-dd6dda27a8be563eaebb3f38b1d1d50920bb7991.tar.gz
blackbird-op-linux-dd6dda27a8be563eaebb3f38b1d1d50920bb7991.zip
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>
Diffstat (limited to 'tools/lib/api')
-rw-r--r--tools/lib/api/fs/debugfs.c8
-rw-r--r--tools/lib/api/fs/debugfs.h1
-rw-r--r--tools/lib/api/fs/findfs.h2
-rw-r--r--tools/lib/api/fs/tracefs.c8
-rw-r--r--tools/lib/api/fs/tracefs.h1
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);
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