diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/perf_counter/builtin-report.c | 41 |
1 files changed, 38 insertions, 3 deletions
diff --git a/Documentation/perf_counter/builtin-report.c b/Documentation/perf_counter/builtin-report.c index 412d524dd65..4705679deba 100644 --- a/Documentation/perf_counter/builtin-report.c +++ b/Documentation/perf_counter/builtin-report.c @@ -23,6 +23,7 @@ static int show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV; static int dump_trace = 0; static int verbose; +static int full_paths; static unsigned long page_size; static unsigned long mmap_window = 32; @@ -134,6 +135,16 @@ static int load_kernel(void) return err; } +static int strcommon(const char *pathname, const char *cwd, int cwdlen) +{ + int n = 0; + + while (pathname[n] == cwd[n] && n < cwdlen) + ++n; + + return n; +} + struct map { struct list_head node; uint64_t start; @@ -142,16 +153,28 @@ struct map { struct dso *dso; }; -static struct map *map__new(struct mmap_event *event) +static struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen) { struct map *self = malloc(sizeof(*self)); if (self != NULL) { + const char *filename = event->filename; + char newfilename[PATH_MAX]; + + if (cwd) { + int n = strcommon(filename, cwd, cwdlen); + if (n == cwdlen) { + snprintf(newfilename, sizeof(newfilename), + ".%s", filename + n); + filename = newfilename; + } + } + self->start = event->start; self->end = event->start + event->len; self->pgoff = event->pgoff; - self->dso = dsos__findnew(event->filename); + self->dso = dsos__findnew(filename); if (self->dso == NULL) goto out_delete; } @@ -598,6 +621,8 @@ static int __cmd_report(void) int ret, rc = EXIT_FAILURE; uint32_t size; unsigned long total = 0, total_mmap = 0, total_comm = 0, total_unknown = 0; + char cwd[PATH_MAX], *cwdp = cwd; + int cwdlen; input = open(input_name, O_RDONLY); if (input < 0) { @@ -621,6 +646,14 @@ static int __cmd_report(void) return EXIT_FAILURE; } + if (!full_paths) { + if (getcwd(cwd, sizeof(cwd)) == NULL) { + perror("failed to get the current directory"); + return EXIT_FAILURE; + } + cwdlen = strlen(cwd); + } else + cwdp = NULL; remap: buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ, MAP_SHARED, input, offset); @@ -710,7 +743,7 @@ more: } else switch (event->header.type) { case PERF_EVENT_MMAP: { struct thread *thread = threads__findnew(event->mmap.pid); - struct map *map = map__new(&event->mmap); + struct map *map = map__new(&event->mmap, cwdp, cwdlen); if (dump_trace) { fprintf(stderr, "%p [%p]: PERF_EVENT_MMAP: [%p(%p) @ %p]: %s\n", @@ -809,6 +842,8 @@ static const struct option options[] = { OPT_STRING('k', "vmlinux", &vmlinux, "file", "vmlinux pathname"), OPT_STRING('s', "sort", &sort_order, "key[,key2...]", "sort by key(s): pid, comm, dso, symbol. Default: pid,symbol"), + OPT_BOOLEAN('P', "full-paths", &full_paths, + "Don't shorten the pathnames taking into account the cwd"), OPT_END() }; |