diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/Makefile | 4 | ||||
| -rw-r--r-- | tools/perf/builtin-stat.c | 40 | ||||
| -rw-r--r-- | tools/perf/util/header.c | 2 |
3 files changed, 38 insertions, 8 deletions
diff --git a/tools/perf/Makefile b/tools/perf/Makefile index 9bf3fc75934..92271d32bc3 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -774,10 +774,10 @@ $(OUTPUT)perf.o perf.spec \ # over the general rule for .o $(OUTPUT)util/%-flex.o: $(OUTPUT)util/%-flex.c $(OUTPUT)PERF-CFLAGS - $(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) -Iutil/ -Wno-redundant-decls -Wno-switch-default -Wno-unused-function $< + $(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) -Iutil/ -w $< $(OUTPUT)util/%-bison.o: $(OUTPUT)util/%-bison.c $(OUTPUT)PERF-CFLAGS - $(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) -DYYENABLE_NLS=0 -DYYLTYPE_IS_TRIVIAL=0 -Iutil/ -Wno-redundant-decls -Wno-switch-default -Wno-unused-function $< + $(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) -DYYENABLE_NLS=0 -DYYLTYPE_IS_TRIVIAL=0 -Iutil/ -w $< $(OUTPUT)%.o: %.c $(OUTPUT)PERF-CFLAGS $(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) $< diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index c941bb640f4..1e5e9b270f5 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -283,6 +283,8 @@ static int create_perf_stat_counter(struct perf_evsel *evsel, { struct perf_event_attr *attr = &evsel->attr; struct xyarray *group_fd = NULL; + bool exclude_guest_missing = false; + int ret; if (group && evsel != first) group_fd = first->fd; @@ -293,16 +295,39 @@ static int create_perf_stat_counter(struct perf_evsel *evsel, attr->inherit = !no_inherit; - if (system_wide) - return perf_evsel__open_per_cpu(evsel, evsel_list->cpus, +retry: + if (exclude_guest_missing) + evsel->attr.exclude_guest = evsel->attr.exclude_host = 0; + + if (system_wide) { + ret = perf_evsel__open_per_cpu(evsel, evsel_list->cpus, group, group_fd); + if (ret) + goto check_ret; + return 0; + } + if (!target_pid && !target_tid && (!group || evsel == first)) { attr->disabled = 1; attr->enable_on_exec = 1; } - return perf_evsel__open_per_thread(evsel, evsel_list->threads, - group, group_fd); + ret = perf_evsel__open_per_thread(evsel, evsel_list->threads, + group, group_fd); + if (!ret) + return 0; + /* fall through */ +check_ret: + if (ret && errno == EINVAL) { + if (!exclude_guest_missing && + (evsel->attr.exclude_guest || evsel->attr.exclude_host)) { + pr_debug("Old kernel, cannot exclude " + "guest or host samples.\n"); + exclude_guest_missing = true; + goto retry; + } + } + return ret; } /* @@ -463,8 +488,13 @@ static int run_perf_stat(int argc __used, const char **argv) list_for_each_entry(counter, &evsel_list->entries, node) { if (create_perf_stat_counter(counter, first) < 0) { + /* + * PPC returns ENXIO for HW counters until 2.6.37 + * (behavior changed with commit b0a873e). + */ if (errno == EINVAL || errno == ENOSYS || - errno == ENOENT || errno == EOPNOTSUPP) { + errno == ENOENT || errno == EOPNOTSUPP || + errno == ENXIO) { if (verbose) ui__warning("%s event is not supported by the kernel.\n", event_name(counter)); diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 4c7c2d73251..c0b70c697a3 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -296,7 +296,7 @@ int build_id_cache__add_s(const char *sbuild_id, const char *debugdir, if (mkdir_p(filename, 0755)) goto out_free; - snprintf(filename + len, sizeof(filename) - len, "/%s", sbuild_id); + snprintf(filename + len, size - len, "/%s", sbuild_id); if (access(filename, F_OK)) { if (is_kallsyms) { |