diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/builtin-trace.c | 9 | ||||
| -rw-r--r-- | tools/perf/util/bpf-loader.c | 23 | ||||
| -rw-r--r-- | tools/perf/util/bpf-loader.h | 7 |
3 files changed, 21 insertions, 18 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 9b4e24217c46..43a699cfcadf 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -3216,8 +3216,9 @@ int cmd_trace(int argc, const char **argv) }; bool __maybe_unused max_stack_user_set = true; bool mmap_pages_user_set = true; + struct perf_evsel *evsel; const char * const trace_subcommands[] = { "record", NULL }; - int err; + int err = -1; char bf[BUFSIZ]; signal(SIGSEGV, sighandler_dump_stack); @@ -3240,9 +3241,9 @@ int cmd_trace(int argc, const char **argv) "cgroup monitoring only available in system-wide mode"); } - err = bpf__setup_output_event(trace.evlist, "__augmented_syscalls__"); - if (err) { - bpf__strerror_setup_output_event(trace.evlist, err, bf, sizeof(bf)); + evsel = bpf__setup_output_event(trace.evlist, "__augmented_syscalls__"); + if (IS_ERR(evsel)) { + bpf__strerror_setup_output_event(trace.evlist, PTR_ERR(evsel), bf, sizeof(bf)); pr_err("ERROR: Setup trace syscalls enter failed: %s\n", bf); goto out; } diff --git a/tools/perf/util/bpf-loader.c b/tools/perf/util/bpf-loader.c index 80dead642719..47aac41349a2 100644 --- a/tools/perf/util/bpf-loader.c +++ b/tools/perf/util/bpf-loader.c @@ -1535,7 +1535,7 @@ int bpf__apply_obj_config(void) (strcmp(name, \ bpf_map__name(pos)) == 0)) -int bpf__setup_output_event(struct perf_evlist *evlist, const char *name) +struct perf_evsel *bpf__setup_output_event(struct perf_evlist *evlist, const char *name) { struct bpf_map_priv *tmpl_priv = NULL; struct bpf_object *obj, *tmp; @@ -1548,7 +1548,7 @@ int bpf__setup_output_event(struct perf_evlist *evlist, const char *name) struct bpf_map_priv *priv = bpf_map__priv(map); if (IS_ERR(priv)) - return -BPF_LOADER_ERRNO__INTERNAL; + return ERR_PTR(-BPF_LOADER_ERRNO__INTERNAL); /* * No need to check map type: type should have been @@ -1561,20 +1561,20 @@ int bpf__setup_output_event(struct perf_evlist *evlist, const char *name) } if (!need_init) - return 0; + return NULL; if (!tmpl_priv) { char *event_definition = NULL; if (asprintf(&event_definition, "bpf-output/no-inherit=1,name=%s/", name) < 0) - return -ENOMEM; + return ERR_PTR(-ENOMEM); err = parse_events(evlist, event_definition, NULL); free(event_definition); if (err) { pr_debug("ERROR: failed to create the \"%s\" bpf-output event\n", name); - return -err; + return ERR_PTR(-err); } evsel = perf_evlist__last(evlist); @@ -1584,37 +1584,38 @@ int bpf__setup_output_event(struct perf_evlist *evlist, const char *name) struct bpf_map_priv *priv = bpf_map__priv(map); if (IS_ERR(priv)) - return -BPF_LOADER_ERRNO__INTERNAL; + return ERR_PTR(-BPF_LOADER_ERRNO__INTERNAL); if (priv) continue; if (tmpl_priv) { priv = bpf_map_priv__clone(tmpl_priv); if (!priv) - return -ENOMEM; + return ERR_PTR(-ENOMEM); err = bpf_map__set_priv(map, priv, bpf_map_priv__clear); if (err) { bpf_map_priv__clear(map, priv); - return err; + return ERR_PTR(err); } } else if (evsel) { struct bpf_map_op *op; op = bpf_map__add_newop(map, NULL); if (IS_ERR(op)) - return PTR_ERR(op); + return ERR_PTR(PTR_ERR(op)); op->op_type = BPF_MAP_OP_SET_EVSEL; op->v.evsel = evsel; } } - return 0; + return evsel; } int bpf__setup_stdout(struct perf_evlist *evlist) { - return bpf__setup_output_event(evlist, "__bpf_stdout__"); + struct perf_evsel *evsel = bpf__setup_output_event(evlist, "__bpf_stdout__"); + return IS_ERR(evsel) ? PTR_ERR(evsel) : 0; } #define ERRNO_OFFSET(e) ((e) - __BPF_LOADER_ERRNO__START) diff --git a/tools/perf/util/bpf-loader.h b/tools/perf/util/bpf-loader.h index 8eca75145ac2..62d245a90e1d 100644 --- a/tools/perf/util/bpf-loader.h +++ b/tools/perf/util/bpf-loader.h @@ -43,6 +43,7 @@ enum bpf_loader_errno { __BPF_LOADER_ERRNO__END, }; +struct perf_evsel; struct bpf_object; struct parse_events_term; #define PERF_BPF_PROBE_GROUP "perf_bpf_probe" @@ -82,7 +83,7 @@ int bpf__apply_obj_config(void); int bpf__strerror_apply_obj_config(int err, char *buf, size_t size); int bpf__setup_stdout(struct perf_evlist *evlist); -int bpf__setup_output_event(struct perf_evlist *evlist, const char *name); +struct perf_evsel *bpf__setup_output_event(struct perf_evlist *evlist, const char *name); int bpf__strerror_setup_output_event(struct perf_evlist *evlist, int err, char *buf, size_t size); #else #include <errno.h> @@ -137,10 +138,10 @@ bpf__setup_stdout(struct perf_evlist *evlist __maybe_unused) return 0; } -static inline int +static inline struct perf_evsel * bpf__setup_output_event(struct perf_evlist *evlist __maybe_unused, const char *name __maybe_unused) { - return 0; + return NULL; } static inline int |