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

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

diff --git a/kernel/tools/lib/api/fs/debugfs.c b/kernel/tools/lib/api/fs/debugfs.c
deleted file mode 100644 (file)
index 8305b3e..0000000
--- a/kernel/tools/lib/api/fs/debugfs.c
+++ /dev/null
@@ -1,118 +0,0 @@
-#define _GNU_SOURCE
-#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 "debugfs.h"
-
-#ifndef DEBUGFS_DEFAULT_PATH
-#define DEBUGFS_DEFAULT_PATH           "/sys/kernel/debug"
-#endif
-
-char debugfs_mountpoint[PATH_MAX + 1] = DEBUGFS_DEFAULT_PATH;
-
-static const char * const debugfs_known_mountpoints[] = {
-       DEBUGFS_DEFAULT_PATH,
-       "/debug",
-       0,
-};
-
-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)
-{
-       const char *ret;
-
-       if (debugfs_found)
-               return (const char *)debugfs_mountpoint;
-
-       ret = find_mountpoint("debugfs", (long) DEBUGFS_MAGIC,
-                             debugfs_mountpoint, PATH_MAX + 1,
-                             debugfs_known_mountpoints);
-       if (ret)
-               debugfs_found = true;
-
-       return ret;
-}
-
-/* mount the debugfs somewhere if it's not mounted */
-char *debugfs_mount(const char *mountpoint)
-{
-       /* see if it's already mounted */
-       if (debugfs_find_mountpoint())
-               goto out;
-
-       /* if not mounted and no argument */
-       if (mountpoint == NULL) {
-               /* see if environment variable set */
-               mountpoint = getenv(PERF_DEBUGFS_ENVIRONMENT);
-               /* if no environment variable, use default */
-               if (mountpoint == NULL)
-                       mountpoint = DEBUGFS_DEFAULT_PATH;
-       }
-
-       if (mount(NULL, mountpoint, "debugfs", 0, NULL) < 0)
-               return NULL;
-
-       /* save the mountpoint */
-       debugfs_found = true;
-       strncpy(debugfs_mountpoint, mountpoint, sizeof(debugfs_mountpoint));
-out:
-       return debugfs_mountpoint;
-}
-
-int debugfs__strerror_open(int err, char *buf, size_t size, const char *filename)
-{
-       char sbuf[128];
-
-       switch (err) {
-       case ENOENT:
-               if (debugfs_found) {
-                       snprintf(buf, size,
-                                "Error:\tFile %s/%s not found.\n"
-                                "Hint:\tPerhaps this kernel misses some CONFIG_ setting to enable this feature?.\n",
-                                debugfs_mountpoint, filename);
-                       break;
-               }
-               snprintf(buf, size, "%s",
-                        "Error:\tUnable to find debugfs\n"
-                        "Hint:\tWas your kernel compiled with debugfs support?\n"
-                        "Hint:\tIs the debugfs filesystem mounted?\n"
-                        "Hint:\tTry 'sudo mount -t debugfs nodev /sys/kernel/debug'");
-               break;
-       case EACCES:
-               snprintf(buf, size,
-                        "Error:\tNo permissions to read %s/%s\n"
-                        "Hint:\tTry 'sudo mount -o remount,mode=755 %s'\n",
-                        debugfs_mountpoint, filename, debugfs_mountpoint);
-               break;
-       default:
-               snprintf(buf, size, "%s", strerror_r(err, sbuf, sizeof(sbuf)));
-               break;
-       }
-
-       return 0;
-}
-
-int debugfs__strerror_open_tp(int err, char *buf, size_t size, const char *sys, const char *name)
-{
-       char path[PATH_MAX];
-
-       snprintf(path, PATH_MAX, "tracing/events/%s/%s", sys, name ?: "*");
-
-       return debugfs__strerror_open(err, buf, size, path);
-}