From: Adrian Hunter <adrian.hun...@intel.com> Add functions to synthesize, count and print AUX area tracing error events.
Signed-off-by: Adrian Hunter <adrian.hun...@intel.com> Cc: David Ahern <dsah...@gmail.com> Cc: Frederic Weisbecker <fweis...@gmail.com> Cc: Jiri Olsa <jo...@redhat.com> Cc: Namhyung Kim <namhy...@gmail.com> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Stephane Eranian <eran...@google.com> Link: http://lkml.kernel.org/r/1428594864-29309-11-git-send-email-adrian.hun...@intel.com Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/util/auxtrace.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++ tools/perf/util/auxtrace.h | 14 ++++++++ tools/perf/util/event.h | 6 ++++ tools/perf/util/session.c | 3 ++ 4 files changed, 104 insertions(+) diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c index db40d6c6c010..905188bd1dfa 100644 --- a/tools/perf/util/auxtrace.c +++ b/tools/perf/util/auxtrace.c @@ -24,6 +24,7 @@ #include <linux/log2.h> #include <stdlib.h> +#include <stdio.h> #include <string.h> #include <errno.h> @@ -36,6 +37,7 @@ #include "auxtrace.h" #include "event.h" +#include "session.h" #include "debug.h" #include "parse-options.h" @@ -172,6 +174,28 @@ auxtrace_record__init(struct perf_evlist *evlist __maybe_unused, int *err) return NULL; } +void auxtrace_synth_error(struct auxtrace_error_event *auxtrace_error, int type, + int code, int cpu, pid_t pid, pid_t tid, u64 ip, + const char *msg) +{ + size_t size; + + memset(auxtrace_error, 0, sizeof(struct auxtrace_error_event)); + + auxtrace_error->header.type = PERF_RECORD_AUXTRACE_ERROR; + auxtrace_error->type = type; + auxtrace_error->code = code; + auxtrace_error->cpu = cpu; + auxtrace_error->pid = pid; + auxtrace_error->tid = tid; + auxtrace_error->ip = ip; + strlcpy(auxtrace_error->msg, msg, MAX_AUXTRACE_ERROR_MSG); + + size = (void *)auxtrace_error->msg - (void *)auxtrace_error + + strlen(auxtrace_error->msg) + 1; + auxtrace_error->header.size = PERF_ALIGN(size, sizeof(u64)); +} + int perf_event__synthesize_auxtrace_info(struct auxtrace_record *itr, struct perf_tool *tool, struct perf_session *session, @@ -336,6 +360,63 @@ out_err: return -EINVAL; } +static const char * const auxtrace_error_type_name[] = { + [PERF_AUXTRACE_ERROR_ITRACE] = "instruction trace", +}; + +static const char *auxtrace_error_name(int type) +{ + const char *error_type_name = NULL; + + if (type < PERF_AUXTRACE_ERROR_MAX) + error_type_name = auxtrace_error_type_name[type]; + if (!error_type_name) + error_type_name = "unknown AUX"; + return error_type_name; +} + +size_t perf_event__fprintf_auxtrace_error(union perf_event *event, FILE *fp) +{ + struct auxtrace_error_event *e = &event->auxtrace_error; + int ret; + + ret = fprintf(fp, " %s error type %u", + auxtrace_error_name(e->type), e->type); + ret += fprintf(fp, " cpu %d pid %d tid %d ip %#"PRIx64" code %u: %s\n", + e->cpu, e->pid, e->tid, e->ip, e->code, e->msg); + return ret; +} + +void perf_session__auxtrace_error_inc(struct perf_session *session, + union perf_event *event) +{ + struct auxtrace_error_event *e = &event->auxtrace_error; + + if (e->type < PERF_AUXTRACE_ERROR_MAX) + session->evlist->stats.nr_auxtrace_errors[e->type] += 1; +} + +void events_stats__auxtrace_error_warn(const struct events_stats *stats) +{ + int i; + + for (i = 0; i < PERF_AUXTRACE_ERROR_MAX; i++) { + if (!stats->nr_auxtrace_errors[i]) + continue; + ui__warning("%u %s errors\n", + stats->nr_auxtrace_errors[i], + auxtrace_error_name(i)); + } +} + +int perf_event__process_auxtrace_error(struct perf_tool *tool __maybe_unused, + union perf_event *event, + struct perf_session *session __maybe_unused) +{ + perf_event__fprintf_auxtrace_error(event, stdout); + return 0; +} + int auxtrace_mmap__read(struct auxtrace_mmap *mm, struct auxtrace_record *itr, struct perf_tool *tool, process_auxtrace_t fn) { diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h index 6355315a91fb..bcfb9288bfea 100644 --- a/tools/perf/util/auxtrace.h +++ b/tools/perf/util/auxtrace.h @@ -23,6 +23,7 @@ #include <linux/types.h> #include "../perf.h" +#include "event.h" #include "session.h" union perf_event; @@ -32,6 +33,7 @@ struct perf_tool; struct option; struct record_opts; struct auxtrace_info_event; +struct events_stats; enum itrace_period_type { PERF_ITRACE_PERIOD_INSTRUCTIONS, @@ -222,14 +224,26 @@ int auxtrace_record__info_fill(struct auxtrace_record *itr, void auxtrace_record__free(struct auxtrace_record *itr); u64 auxtrace_record__reference(struct auxtrace_record *itr); +void auxtrace_synth_error(struct auxtrace_error_event *auxtrace_error, int type, + int code, int cpu, pid_t pid, pid_t tid, u64 ip, + const char *msg); + int perf_event__synthesize_auxtrace_info(struct auxtrace_record *itr, struct perf_tool *tool, struct perf_session *session, perf_event__handler_t process); +int perf_event__process_auxtrace_error(struct perf_tool *tool, + union perf_event *event, + struct perf_session *session); int itrace_parse_synth_opts(const struct option *opt, const char *str, int unset); void itrace_synth_opts__set_default(struct itrace_synth_opts *synth_opts); +size_t perf_event__fprintf_auxtrace_error(union perf_event *event, FILE *fp); +void perf_session__auxtrace_error_inc(struct perf_session *session, + union perf_event *event); +void events_stats__auxtrace_error_warn(const struct events_stats *stats); + static inline int auxtrace__process_event(struct perf_session *session, union perf_event *event, struct perf_sample *sample, diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h index 657dcfaf0389..8ef37251a7a9 100644 --- a/tools/perf/util/event.h +++ b/tools/perf/util/event.h @@ -221,6 +221,11 @@ enum perf_user_event_type { /* above any possible kernel type */ PERF_RECORD_HEADER_MAX }; +enum auxtrace_error_type { + PERF_AUXTRACE_ERROR_ITRACE = 1, + PERF_AUXTRACE_ERROR_MAX +}; + /* * The kernel collects the number of events it couldn't send in a stretch and * when possible sends this number in a PERF_RECORD_LOST event. The number of @@ -245,6 +250,7 @@ struct events_stats { u32 nr_invalid_chains; u32 nr_unknown_id; u32 nr_unprocessable_samples; + u32 nr_auxtrace_errors[PERF_AUXTRACE_ERROR_MAX]; }; struct attr_event { diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 7271c6bcb2dc..1db3ce118a54 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -1093,6 +1093,7 @@ static s64 perf_session__process_user_event(struct perf_session *session, lseek(fd, file_offset + event->header.size, SEEK_SET); return tool->auxtrace(tool, event, session); case PERF_RECORD_AUXTRACE_ERROR: + perf_session__auxtrace_error_inc(session, event); return tool->auxtrace_error(tool, event, session); default: return -EINVAL; @@ -1282,6 +1283,8 @@ static void perf_session__warn_about_errors(const struct perf_session *session) if (oe->nr_unordered_events != 0) ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events); + + events_stats__auxtrace_error_warn(stats); } volatile int session_done; -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
