[v1,11/13] perf parse-events: Populate error column for BPF events

Message ID	20230627043458.662048-12-irogers@google.com (mailing list archive)
State	Superseded
Headers	show Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 621FF110C for <bpf@vger.kernel.org>; Tue, 27 Jun 2023 04:35:48 +0000 (UTC) Date: Mon, 26 Jun 2023 21:34:56 -0700 In-Reply-To: <20230627043458.662048-1-irogers@google.com> Message-Id: <20230627043458.662048-12-irogers@google.com> Precedence: bulk Mime-Version: 1.0 References: <20230627043458.662048-1-irogers@google.com> Subject: [PATCH v1 11/13] perf parse-events: Populate error column for BPF events From: Ian Rogers <irogers@google.com> To: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>, Arnaldo Carvalho de Melo <acme@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Alexander Shishkin <alexander.shishkin@linux.intel.com>, Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>, Ian Rogers <irogers@google.com>, Adrian Hunter <adrian.hunter@intel.com>, Athira Rajeev <atrajeev@linux.vnet.ibm.com>, Kan Liang <kan.liang@linux.intel.com>, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org Content-Type: text/plain; charset="UTF-8"
Series	parse-events clean up \| expand [v1,00/13] parse-events clean up [v1,01/13] perf parse-events: Remove unused PE_PMU_EVENT_FAKE token [v1,02/13] perf parse-events: Remove unused PE_KERNEL_PMU_EVENT token [v1,03/13] perf parse-events: Remove two unused tokens [v1,04/13] perf parse-events: Add more comments to parse_events_state [v1,05/13] perf parse-events: Avoid regrouped warning for wild card events [v1,06/13] perf parse-event: Add memory allocation test for name terms [v1,07/13] perf parse-events: Separate YYABORT and YYNOMEM cases [v1,08/13] perf parse-events: Move instances of YYABORT to YYNOMEM [v1,09/13] perf parse-events: Separate ENOMEM memory handling [v1,10/13] perf parse-events: Additional error reporting [v1,11/13] perf parse-events: Populate error column for BPF events [v1,12/13] perf parse-events: Improve location for add pmu [v1,13/13] perf parse-events: Remove ABORT_ON

Context	Check	Description
netdev/tree_selection	success	Not a local patch

diff --git a/tools/perf/tests/bpf.c b/tools/perf/tests/bpf.c index 8beb46066034..31796f2a80f4 100644 --- a/tools/perf/tests/bpf.c +++ b/tools/perf/tests/bpf.c @@ -124,7 +124,7 @@ static int do_test(struct bpf_object *obj, int (*func)(void), parse_state.error = &parse_error; INIT_LIST_HEAD(&parse_state.list); - err = parse_events_load_bpf_obj(&parse_state, &parse_state.list, obj, NULL); + err = parse_events_load_bpf_obj(&parse_state, &parse_state.list, obj, NULL, NULL); parse_events_error__exit(&parse_error); if (err == -ENODATA) { pr_debug("Failed to add events selected by BPF, debuginfo package not installed\n"); diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index f31f233e395f..a92545908626 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -499,7 +499,7 @@ int parse_events_add_cache(struct list_head *list, int *idx, const char *name, #ifdef HAVE_LIBTRACEEVENT static void tracepoint_error(struct parse_events_error *e, int err, - const char *sys, const char *name) + const char *sys, const char *name, int column) { const char *str; char help[BUFSIZ]; @@ -526,18 +526,19 @@ static void tracepoint_error(struct parse_events_error *e, int err, } tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name); - parse_events_error__handle(e, 0, strdup(str), strdup(help)); + parse_events_error__handle(e, column, strdup(str), strdup(help)); } static int add_tracepoint(struct list_head *list, int *idx, const char *sys_name, const char *evt_name, struct parse_events_error *err, - struct list_head *head_config) + struct list_head *head_config, void *loc_) { + YYLTYPE *loc = loc_; struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, (*idx)++); if (IS_ERR(evsel)) { - tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name); + tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name, loc->first_column); return PTR_ERR(evsel); } @@ -556,7 +557,7 @@ static int add_tracepoint(struct list_head *list, int *idx, static int add_tracepoint_multi_event(struct list_head *list, int *idx, const char *sys_name, const char *evt_name, struct parse_events_error *err, - struct list_head *head_config) + struct list_head *head_config, YYLTYPE *loc) { char *evt_path; struct dirent *evt_ent; @@ -565,13 +566,13 @@ static int add_tracepoint_multi_event(struct list_head *list, int *idx, evt_path = get_events_file(sys_name); if (!evt_path) { - tracepoint_error(err, errno, sys_name, evt_name); + tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); return -1; } evt_dir = opendir(evt_path); if (!evt_dir) { put_events_file(evt_path); - tracepoint_error(err, errno, sys_name, evt_name); + tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); return -1; } @@ -588,11 +589,11 @@ static int add_tracepoint_multi_event(struct list_head *list, int *idx, found++; ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name, - err, head_config); + err, head_config, loc); } if (!found) { - tracepoint_error(err, ENOENT, sys_name, evt_name); + tracepoint_error(err, ENOENT, sys_name, evt_name, loc->first_column); ret = -1; } @@ -604,19 +605,19 @@ static int add_tracepoint_multi_event(struct list_head *list, int *idx, static int add_tracepoint_event(struct list_head *list, int *idx, const char *sys_name, const char *evt_name, struct parse_events_error *err, - struct list_head *head_config) + struct list_head *head_config, YYLTYPE *loc) { return strpbrk(evt_name, "*?") ? - add_tracepoint_multi_event(list, idx, sys_name, evt_name, - err, head_config) : - add_tracepoint(list, idx, sys_name, evt_name, - err, head_config); + add_tracepoint_multi_event(list, idx, sys_name, evt_name, + err, head_config, loc) : + add_tracepoint(list, idx, sys_name, evt_name, + err, head_config, loc); } static int add_tracepoint_multi_sys(struct list_head *list, int *idx, const char *sys_name, const char *evt_name, struct parse_events_error *err, - struct list_head *head_config) + struct list_head *head_config, YYLTYPE *loc) { struct dirent *events_ent; DIR *events_dir; @@ -624,7 +625,7 @@ static int add_tracepoint_multi_sys(struct list_head *list, int *idx, events_dir = tracing_events__opendir(); if (!events_dir) { - tracepoint_error(err, errno, sys_name, evt_name); + tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); return -1; } @@ -640,7 +641,7 @@ static int add_tracepoint_multi_sys(struct list_head *list, int *idx, continue; ret = add_tracepoint_event(list, idx, events_ent->d_name, - evt_name, err, head_config); + evt_name, err, head_config, loc); } closedir(events_dir); @@ -653,6 +654,7 @@ struct __add_bpf_event_param { struct parse_events_state *parse_state; struct list_head *list; struct list_head *head_config; + YYLTYPE *loc; }; static int add_bpf_event(const char *group, const char *event, int fd, struct bpf_object *obj, @@ -679,7 +681,7 @@ static int add_bpf_event(const char *group, const char *event, int fd, struct bp err = parse_events_add_tracepoint(&new_evsels, &parse_state->idx, group, event, parse_state->error, - param->head_config); + param->head_config, param->loc); if (err) { struct evsel *evsel, *tmp; @@ -706,12 +708,14 @@ static int add_bpf_event(const char *group, const char *event, int fd, struct bp int parse_events_load_bpf_obj(struct parse_events_state *parse_state, struct list_head *list, struct bpf_object *obj, - struct list_head *head_config) + struct list_head *head_config, + void *loc) { int err; char errbuf[BUFSIZ]; - struct __add_bpf_event_param param = {parse_state, list, head_config}; + struct __add_bpf_event_param param = {parse_state, list, head_config, loc}; static bool registered_unprobe_atexit = false; + YYLTYPE test_loc = {.first_column = -1}; if (IS_ERR(obj) || !obj) { snprintf(errbuf, sizeof(errbuf), @@ -742,6 +746,9 @@ int parse_events_load_bpf_obj(struct parse_events_state *parse_state, goto errout; } + if (!param.loc) + param.loc = &test_loc; + err = bpf__foreach_event(obj, add_bpf_event, &param); if (err) { snprintf(errbuf, sizeof(errbuf), @@ -751,7 +758,7 @@ int parse_events_load_bpf_obj(struct parse_events_state *parse_state, return 0; errout: - parse_events_error__handle(parse_state->error, 0, + parse_events_error__handle(parse_state->error, param.loc->first_column, strdup(errbuf), strdup("(add -v to see detail)")); return err; } @@ -839,11 +846,13 @@ int parse_events_load_bpf(struct parse_events_state *parse_state, struct list_head *list, char *bpf_file_name, bool source, - struct list_head *head_config) + struct list_head *head_config, + void *loc_) { int err; struct bpf_object *obj; LIST_HEAD(obj_head_config); + YYLTYPE *loc = loc_; if (head_config) split_bpf_config_terms(head_config, &obj_head_config); @@ -863,12 +872,12 @@ int parse_events_load_bpf(struct parse_events_state *parse_state, -err, errbuf, sizeof(errbuf)); - parse_events_error__handle(parse_state->error, 0, + parse_events_error__handle(parse_state->error, loc->first_column, strdup(errbuf), strdup("(add -v to see detail)")); return err; } - err = parse_events_load_bpf_obj(parse_state, list, obj, head_config); + err = parse_events_load_bpf_obj(parse_state, list, obj, head_config, loc); if (err) return err; err = parse_events_config_bpf(parse_state, obj, &obj_head_config); @@ -885,9 +894,12 @@ int parse_events_load_bpf(struct parse_events_state *parse_state, int parse_events_load_bpf_obj(struct parse_events_state *parse_state, struct list_head *list __maybe_unused, struct bpf_object *obj __maybe_unused, - struct list_head *head_config __maybe_unused) + struct list_head *head_config __maybe_unused, + void *loc_) { - parse_events_error__handle(parse_state->error, 0, + YYLTYPE *loc = loc_; + + parse_events_error__handle(parse_state->error, loc->first_column, strdup("BPF support is not compiled"), strdup("Make sure libbpf-devel is available at build time.")); return -ENOTSUP; @@ -897,9 +909,12 @@ int parse_events_load_bpf(struct parse_events_state *parse_state, struct list_head *list __maybe_unused, char *bpf_file_name __maybe_unused, bool source __maybe_unused, - struct list_head *head_config __maybe_unused) + struct list_head *head_config __maybe_unused, + void *loc_) { - parse_events_error__handle(parse_state->error, 0, + YYLTYPE *loc = loc_; + + parse_events_error__handle(parse_state->error, loc->first_column, strdup("BPF support is not compiled"), strdup("Make sure libbpf-devel is available at build time.")); return -ENOTSUP; @@ -1433,7 +1448,7 @@ static int get_config_chgs(struct perf_pmu *pmu, struct list_head *head_config, int parse_events_add_tracepoint(struct list_head *list, int *idx, const char *sys, const char *event, struct parse_events_error *err, - struct list_head *head_config) + struct list_head *head_config, void *loc) { #ifdef HAVE_LIBTRACEEVENT if (head_config) { @@ -1446,10 +1461,10 @@ int parse_events_add_tracepoint(struct list_head *list, int *idx, if (strpbrk(sys, "*?")) return add_tracepoint_multi_sys(list, idx, sys, event, - err, head_config); + err, head_config, loc); else return add_tracepoint_event(list, idx, sys, event, - err, head_config); + err, head_config, loc); #else (void)list; (void)idx; diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index b37e5ee193a8..cabbe70adb82 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -169,18 +169,20 @@ int parse_events_name(struct list_head *list, const char *name); int parse_events_add_tracepoint(struct list_head *list, int *idx, const char *sys, const char *event, struct parse_events_error *error, - struct list_head *head_config); + struct list_head *head_config, void *loc); int parse_events_load_bpf(struct parse_events_state *parse_state, struct list_head *list, char *bpf_file_name, bool source, - struct list_head *head_config); + struct list_head *head_config, + void *loc); /* Provide this function for perf test */ struct bpf_object; int parse_events_load_bpf_obj(struct parse_events_state *parse_state, struct list_head *list, struct bpf_object *obj, - struct list_head *head_config); + struct list_head *head_config, + void *loc); int parse_events_add_numeric(struct parse_events_state *parse_state, struct list_head *list, u32 type, u64 config, diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y index a636a7db6e6f..50f5b819de37 100644 --- a/tools/perf/util/parse-events.y +++ b/tools/perf/util/parse-events.y @@ -567,7 +567,7 @@ tracepoint_name opt_event_config error->idx = @1.first_column; err = parse_events_add_tracepoint(list, &parse_state->idx, $1.sys, $1.event, - error, $2); + error, $2, &@1); parse_events_terms__delete($2); free($1.sys); @@ -640,7 +640,7 @@ PE_BPF_OBJECT opt_event_config list = alloc_list(); if (!list) YYNOMEM; - err = parse_events_load_bpf(parse_state, list, $1, false, $2); + err = parse_events_load_bpf(parse_state, list, $1, false, $2, &@1); parse_events_terms__delete($2); free($1); if (err) { @@ -658,7 +658,7 @@ PE_BPF_SOURCE opt_event_config list = alloc_list(); if (!list) YYNOMEM; - err = parse_events_load_bpf(_parse_state, list, $1, true, $2); + err = parse_events_load_bpf(_parse_state, list, $1, true, $2, &@1); parse_events_terms__delete($2); if (err) { free(list);

[v1,11/13] perf parse-events: Populate error column for BPF events

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