diff options
Diffstat (limited to 'clocks.c')
| -rw-r--r-- | clocks.c | 54 |
1 files changed, 53 insertions, 1 deletions
@@ -15,6 +15,7 @@ *******************************************************************************/ #include "powerdebug.h" +#include "clocks.h" #include <errno.h> #include <sys/stat.h> @@ -27,7 +28,24 @@ static int gadder = 0; void init_clock_details(void) { - strcpy(clk_dir_path, "/debug/clock"); + char *path = debugfs_locate_mpoint(); + struct stat buf; + + + if (path) + strcpy(clk_dir_path, path); + else { + fprintf(stderr, "powerdebug: Unable to locate debugfs mount" + " point. Mount debugfs and try again..\n"); + exit(1); + } + sprintf(clk_dir_path, "%s/clock", clk_dir_path); + //strcpy(clk_dir_path, "/debug/clock"); // Hardcoded for testing.. + if (stat(clk_dir_path, &buf)) { + fprintf(stderr, "powerdebug: Unable to find clock tree" + " information at %s. Exiting..\n", clk_dir_path); + exit(1); + } strcpy(clk_name, ""); strcpy(highlighted_path, ""); } @@ -350,3 +368,37 @@ void print_clock_info(struct clock_info *clk, int level, int bmp) } } } + +char *debugfs_locate_mpoint(void) +{ + int ret; + FILE *filep; + char **path; + char fsname[64]; + struct statfs sfs; + + path = likely_mpoints; + while (*path) { + ret = statfs(*path, &sfs); + if (ret >= 0 && sfs.f_type == (long)DEBUGFS_MAGIC) + return *path; + path++; + } + + filep = fopen("/proc/mounts", "r"); + if (filep == NULL) { + fprintf(stderr, "powerdebug: Error opening /proc/mounts."); + exit(1); + } + + while (fscanf(filep, "%*s %s %s %*s %*d %*d\n", + debugfs_mntpoint, fsname) == 2) + if (!strcmp(fsname, "debugfs")) + break; + fclose(filep); + + if (strcmp(fsname, "debugfs")) + return NULL; + + return debugfs_mntpoint; +} |