From e9bf54d25f4f64c410c2aca644749a3325b96f5a Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 9 Apr 2015 18:53:47 +0300 Subject: [PATCH] perf tools: Add a user event for AUX area tracing errors Errors encountered when decoding an AUX area trace need to be reported to the user. However the "user" might be a script or another tool, so provide a new user event to capture those errors. Signed-off-by: Adrian Hunter Acked-by: Jiri Olsa Cc: David Ahern Cc: Frederic Weisbecker Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1428594864-29309-8-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/event.c | 1 + tools/perf/util/event.h | 16 ++++++++++++++++ tools/perf/util/session.c | 25 +++++++++++++++++++++++++ tools/perf/util/tool.h | 3 ++- 4 files changed, 44 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index adada16a3f3b..32323e5d7b25 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -31,6 +31,7 @@ static const char *perf_event__names[] = { [PERF_RECORD_ID_INDEX] = "ID_INDEX", [PERF_RECORD_AUXTRACE_INFO] = "AUXTRACE_INFO", [PERF_RECORD_AUXTRACE] = "AUXTRACE", + [PERF_RECORD_AUXTRACE_ERROR] = "AUXTRACE_ERROR", }; const char *perf_event__name(unsigned int id) diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h index 6d81beca1f27..657dcfaf0389 100644 --- a/tools/perf/util/event.h +++ b/tools/perf/util/event.h @@ -217,6 +217,7 @@ enum perf_user_event_type { /* above any possible kernel type */ PERF_RECORD_ID_INDEX = 69, PERF_RECORD_AUXTRACE_INFO = 70, PERF_RECORD_AUXTRACE = 71, + PERF_RECORD_AUXTRACE_ERROR = 72, PERF_RECORD_HEADER_MAX }; @@ -300,6 +301,20 @@ struct auxtrace_event { u32 reserved__; /* For alignment */ }; +#define MAX_AUXTRACE_ERROR_MSG 64 + +struct auxtrace_error_event { + struct perf_event_header header; + u32 type; + u32 code; + u32 cpu; + u32 pid; + u32 tid; + u32 reserved__; /* For alignment */ + u64 ip; + char msg[MAX_AUXTRACE_ERROR_MSG]; +}; + union perf_event { struct perf_event_header header; struct mmap_event mmap; @@ -317,6 +332,7 @@ union perf_event { struct id_index_event id_index; struct auxtrace_info_event auxtrace_info; struct auxtrace_event auxtrace; + struct auxtrace_error_event auxtrace_error; }; void perf_event__print_totals(void); diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index d46ac4038fc7..4008dab73424 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -296,6 +296,15 @@ static s64 process_event_auxtrace_stub(struct perf_tool *tool __maybe_unused, return event->auxtrace.size; } +static +int process_event_auxtrace_error_stub(struct perf_tool *tool __maybe_unused, + union perf_event *event __maybe_unused, + struct perf_session *session __maybe_unused) +{ + dump_printf(": unhandled!\n"); + return 0; +} + void perf_tool__fill_defaults(struct perf_tool *tool) { if (tool->sample == NULL) @@ -336,6 +345,8 @@ void perf_tool__fill_defaults(struct perf_tool *tool) tool->auxtrace_info = process_event_auxtrace_info_stub; if (tool->auxtrace == NULL) tool->auxtrace = process_event_auxtrace_stub; + if (tool->auxtrace_error == NULL) + tool->auxtrace_error = process_event_auxtrace_error_stub; } static void swap_sample_id_all(union perf_event *event, void *data) @@ -539,6 +550,17 @@ static void perf_event__auxtrace_swap(union perf_event *event, event->auxtrace.cpu = bswap_32(event->auxtrace.cpu); } +static void perf_event__auxtrace_error_swap(union perf_event *event, + bool sample_id_all __maybe_unused) +{ + event->auxtrace_error.type = bswap_32(event->auxtrace_error.type); + event->auxtrace_error.code = bswap_32(event->auxtrace_error.code); + event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu); + event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid); + event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid); + event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip); +} + typedef void (*perf_event__swap_op)(union perf_event *event, bool sample_id_all); @@ -560,6 +582,7 @@ static perf_event__swap_op perf_event__swap_ops[] = { [PERF_RECORD_ID_INDEX] = perf_event__all64_swap, [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap, [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap, + [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap, [PERF_RECORD_HEADER_MAX] = NULL, }; @@ -1049,6 +1072,8 @@ static s64 perf_session__process_user_event(struct perf_session *session, /* setup for reading amidst mmap */ lseek(fd, file_offset + event->header.size, SEEK_SET); return tool->auxtrace(tool, event, session); + case PERF_RECORD_AUXTRACE_ERROR: + return tool->auxtrace_error(tool, event, session); default: return -EINVAL; } diff --git a/tools/perf/util/tool.h b/tools/perf/util/tool.h index 0146f8ef5cc3..20afe19a8eb0 100644 --- a/tools/perf/util/tool.h +++ b/tools/perf/util/tool.h @@ -50,7 +50,8 @@ struct perf_tool { event_oe finished_round; event_op2 build_id, id_index, - auxtrace_info; + auxtrace_info, + auxtrace_error; event_op3 auxtrace; bool ordered_events; bool ordering_requires_timestamps; -- 2.39.5