These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / tools / lib / api / fs / tracefs.c

diff --git a/kernel/tools/lib/api/fs/tracefs.c b/kernel/tools/lib/api/fs/tracefs.c
deleted file mode 100644 (file)
index e4aa968..0000000
--- a/kernel/tools/lib/api/fs/tracefs.c
+++ /dev/null
@@ -1,78 +0,0 @@
-#include <errno.h>
-#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>
-
-#include "tracefs.h"
-
-#ifndef TRACEFS_DEFAULT_PATH
-#define TRACEFS_DEFAULT_PATH           "/sys/kernel/tracing"
-#endif
-
-char tracefs_mountpoint[PATH_MAX + 1] = TRACEFS_DEFAULT_PATH;
-
-static const char * const tracefs_known_mountpoints[] = {
-       TRACEFS_DEFAULT_PATH,
-       "/sys/kernel/debug/tracing",
-       "/tracing",
-       "/trace",
-       0,
-};
-
-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)
-{
-       const char *ret;
-
-       if (tracefs_found)
-               return (const char *)tracefs_mountpoint;
-
-       ret = find_mountpoint("tracefs", (long) TRACEFS_MAGIC,
-                             tracefs_mountpoint, PATH_MAX + 1,
-                             tracefs_known_mountpoints);
-
-       if (ret)
-               tracefs_found = true;
-
-       return ret;
-}
-
-/* mount the tracefs somewhere if it's not mounted */
-char *tracefs_mount(const char *mountpoint)
-{
-       /* see if it's already mounted */
-       if (tracefs_find_mountpoint())
-               goto out;
-
-       /* if not mounted and no argument */
-       if (mountpoint == NULL) {
-               /* see if environment variable set */
-               mountpoint = getenv(PERF_TRACEFS_ENVIRONMENT);
-               /* if no environment variable, use default */
-               if (mountpoint == NULL)
-                       mountpoint = TRACEFS_DEFAULT_PATH;
-       }
-
-       if (mount(NULL, mountpoint, "tracefs", 0, NULL) < 0)
-               return NULL;
-
-       /* save the mountpoint */
-       tracefs_found = true;
-       strncpy(tracefs_mountpoint, mountpoint, sizeof(tracefs_mountpoint));
-out:
-       return tracefs_mountpoint;
-}