diff options
Diffstat (limited to 'tools/perf/util')
| -rw-r--r-- | tools/perf/util/cache.h | 1 | ||||
| -rw-r--r-- | tools/perf/util/parse-events.c | 33 | ||||
| -rw-r--r-- | tools/perf/util/parse-events.h | 5 | ||||
| -rw-r--r-- | tools/perf/util/string.h | 3 |
4 files changed, 26 insertions, 16 deletions
diff --git a/tools/perf/util/cache.h b/tools/perf/util/cache.h index 161d5f413e28..4b50c412b9c5 100644 --- a/tools/perf/util/cache.h +++ b/tools/perf/util/cache.h @@ -18,6 +18,7 @@ #define PERFATTRIBUTES_FILE ".perfattributes" #define INFOATTRIBUTES_FILE "info/attributes" #define ATTRIBUTE_MACRO_PREFIX "[attr]" +#define PERF_DEBUGFS_ENVIRONMENT "PERF_DEBUGFS_DIR" typedef int (*config_fn_t)(const char *, const char *, void *); extern int perf_default_config(const char *, const char *, void *); diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 5a3cd3a34af1..7bdad8df22a6 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -5,6 +5,7 @@ #include "parse-events.h" #include "exec_cmd.h" #include "string.h" +#include "cache.h" extern char *strcasestr(const char *haystack, const char *needle); @@ -12,8 +13,6 @@ int nr_counters; struct perf_counter_attr attrs[MAX_COUNTERS]; -static char default_debugfs_path[] = "/sys/kernel/debug/tracing/events"; - struct event_symbol { u8 type; u64 config; @@ -21,6 +20,8 @@ struct event_symbol { char *alias; }; +char debugfs_path[MAXPATHLEN]; + #define CHW(x) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_##x #define CSW(x) .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_##x @@ -114,27 +115,27 @@ static unsigned long hw_cache_stat[C(MAX)] = { #define for_each_subsystem(sys_dir, sys_dirent, sys_next, file, st) \ while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \ - if (snprintf(file, MAXPATHLEN, "%s/%s", default_debugfs_path, \ - sys_dirent.d_name) && \ + if (snprintf(file, MAXPATHLEN, "%s/%s", debugfs_path, \ + sys_dirent.d_name) && \ (!stat(file, &st)) && (S_ISDIR(st.st_mode)) && \ (strcmp(sys_dirent.d_name, ".")) && \ (strcmp(sys_dirent.d_name, ".."))) #define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next, file, st) \ while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \ - if (snprintf(file, MAXPATHLEN, "%s/%s/%s", default_debugfs_path, \ - sys_dirent.d_name, evt_dirent.d_name) && \ + if (snprintf(file, MAXPATHLEN, "%s/%s/%s", debugfs_path, \ + sys_dirent.d_name, evt_dirent.d_name) && \ (!stat(file, &st)) && (S_ISDIR(st.st_mode)) && \ (strcmp(evt_dirent.d_name, ".")) && \ (strcmp(evt_dirent.d_name, ".."))) #define MAX_EVENT_LENGTH 30 -static int valid_debugfs_mount(void) +int valid_debugfs_mount(const char *debugfs) { struct statfs st_fs; - if (statfs(default_debugfs_path, &st_fs) < 0) + if (statfs(debugfs, &st_fs) < 0) return -ENOENT; else if (st_fs.f_type != (long) DEBUGFS_MAGIC) return -ENOENT; @@ -152,10 +153,10 @@ static char *tracepoint_id_to_name(u64 config) u64 id; char evt_path[MAXPATHLEN]; - if (valid_debugfs_mount()) + if (valid_debugfs_mount(debugfs_path)) return "unkown"; - sys_dir = opendir(default_debugfs_path); + sys_dir = opendir(debugfs_path); if (!sys_dir) goto cleanup; @@ -166,7 +167,7 @@ static char *tracepoint_id_to_name(u64 config) for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next, evt_path, st) { snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", - default_debugfs_path, sys_dirent.d_name, + debugfs_path, sys_dirent.d_name, evt_dirent.d_name); fd = open(evt_path, O_RDONLY); if (fd < 0) @@ -363,7 +364,7 @@ static int parse_tracepoint_event(const char **strp, u64 id; char evt_path[MAXPATHLEN]; - if (valid_debugfs_mount()) + if (valid_debugfs_mount(debugfs_path)) return 0; evt_name = strchr(*strp, ':'); @@ -381,8 +382,8 @@ static int parse_tracepoint_event(const char **strp, if (evt_length >= MAX_EVENT_LENGTH) return 0; - snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", default_debugfs_path, - sys_name, evt_name); + snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path, + sys_name, evt_name); fd = open(evt_path, O_RDONLY); if (fd < 0) return 0; @@ -568,10 +569,10 @@ static void print_tracepoint_events(void) struct stat st; char evt_path[MAXPATHLEN]; - if (valid_debugfs_mount()) + if (valid_debugfs_mount(debugfs_path)) return; - sys_dir = opendir(default_debugfs_path); + sys_dir = opendir(debugfs_path); if (!sys_dir) goto cleanup; diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index e3d552908e60..1ea5d09b6eb1 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -3,6 +3,8 @@ * Parse symbolic events/counts passed in as options: */ +struct option; + extern int nr_counters; extern struct perf_counter_attr attrs[MAX_COUNTERS]; @@ -15,3 +17,6 @@ extern int parse_events(const struct option *opt, const char *str, int unset); extern void print_events(void); +extern char debugfs_path[]; +extern int valid_debugfs_mount(const char *debugfs); + diff --git a/tools/perf/util/string.h b/tools/perf/util/string.h index 3dca2f654cd0..bf39dfadfd24 100644 --- a/tools/perf/util/string.h +++ b/tools/perf/util/string.h @@ -5,4 +5,7 @@ int hex2u64(const char *ptr, u64 *val); +#define _STR(x) #x +#define STR(x) _STR(x) + #endif |