diff options
| -rw-r--r-- | tools/perf/builtin-trace.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 123d7efc12e8..94c33bb573c1 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -127,6 +127,7 @@ struct trace { unsigned int min_stack; int raw_augmented_syscalls_args_size; bool raw_augmented_syscalls; + bool fd_path_disabled; bool sort_events; bool not_ev_qualifier; bool live; @@ -1178,7 +1179,7 @@ static const char *thread__fd_path(struct thread *thread, int fd, { struct thread_trace *ttrace = thread__priv(thread); - if (ttrace == NULL) + if (ttrace == NULL || trace->fd_path_disabled) return NULL; if (fd < 0) @@ -2097,7 +2098,7 @@ static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel, ret = perf_evsel__sc_tp_uint(evsel, ret, sample); - if (sc->is_open && ret >= 0 && ttrace->filename.pending_open) { + if (!trace->fd_path_disabled && sc->is_open && ret >= 0 && ttrace->filename.pending_open) { trace__set_fd_pathname(thread, ret, ttrace->filename.name); ttrace->filename.pending_open = false; ++trace->stats.vfs_getname; @@ -3206,7 +3207,6 @@ static int trace__run(struct trace *trace, int argc, const char **argv) if (trace->syscalls.prog_array.sys_enter) trace__init_syscalls_bpf_prog_array_maps(trace); - if (trace->ev_qualifier_ids.nr > 0) { err = trace__set_ev_qualifier_filter(trace); if (err < 0) @@ -3218,6 +3218,19 @@ static int trace__run(struct trace *trace, int argc, const char **argv) } } + /* + * If the "close" syscall is not traced, then we will not have the + * opportunity to, in syscall_arg__scnprintf_close_fd() invalidate the + * fd->pathname table and were ending up showing the last value set by + * syscalls opening a pathname and associating it with a descriptor or + * reading it from /proc/pid/fd/ in cases where that doesn't make + * sense. + * + * So just disable this beautifier (SCA_FD, SCA_FDAT) when 'close' is + * not in use. + */ + trace->fd_path_disabled = !trace__syscall_enabled(trace, syscalltbl__id(trace->sctbl, "close")); + err = perf_evlist__apply_filters(evlist, &evsel); if (err < 0) goto out_error_apply_filters; |