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perf tools: Add event_update user level event 

It'll serve as a base event for additional event attributes details,
that are not part of the attr event.

At the moment this event is just a dummy one without any specific
functionality. The type value will distinguish the update event details.
It'll come in the following patches.

The idea for this event is to be extensible for any update that the
event might need in the future.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1445784728-21732-21-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2015-10-25 15:51:36 +01:00 committed by Arnaldo Carvalho de Melo
parent e08a4564e2
commit ffe777254c
6 changed files with 56 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
tools/perf/util/event.c
View File

@ -44,6 +44,7 @@ static const char *perf_event__names[] = {
[PERF_RECORD_STAT_CONFIG] = "STAT_CONFIG",
[PERF_RECORD_STAT] = "STAT",
[PERF_RECORD_STAT_ROUND] = "STAT_ROUND",
[PERF_RECORD_EVENT_UPDATE] = "EVENT_UPDATE",
};
const char *perf_event__name(unsigned int id)

10
tools/perf/util/event.h
View File

@ -231,6 +231,7 @@ enum perf_user_event_type { /* above any possible kernel type */
PERF_RECORD_STAT_CONFIG = 75,
PERF_RECORD_STAT = 76,
PERF_RECORD_STAT_ROUND = 77,
PERF_RECORD_EVENT_UPDATE = 78,
PERF_RECORD_HEADER_MAX
};
@ -307,6 +308,14 @@ struct attr_event {
u64 id[];
};
struct event_update_event {
struct perf_event_header header;
u64 type;
u64 id;
char data[];
};
#define MAX_EVENT_NAME 64
struct perf_trace_event_type {
@ -456,6 +465,7 @@ union perf_event {
struct throttle_event throttle;
struct sample_event sample;
struct attr_event attr;
struct event_update_event event_update;
struct event_type_event event_type;
struct tracing_data_event tracing_data;
struct build_id_event build_id;

20
tools/perf/util/header.c
View File

@ -2745,6 +2745,26 @@ int perf_event__process_attr(struct perf_tool *tool __maybe_unused,
return 0;
}
int perf_event__process_event_update(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_evlist **pevlist)
{
struct event_update_event *ev = &event->event_update;
struct perf_evlist *evlist;
struct perf_evsel *evsel;
if (!pevlist || *pevlist == NULL)
return -EINVAL;
evlist = *pevlist;
evsel = perf_evlist__id2evsel(evlist, ev->id);
if (evsel == NULL)
return -EINVAL;
return 0;
}
int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd,
struct perf_evlist *evlist,
perf_event__handler_t process)

3
tools/perf/util/header.h
View File

@ -107,6 +107,9 @@ int perf_event__synthesize_attrs(struct perf_tool *tool,
perf_event__handler_t process);
int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
struct perf_evlist **pevlist);
int perf_event__process_event_update(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_evlist **pevlist);
int perf_event__synthesize_tracing_data(struct perf_tool *tool,
int fd, struct perf_evlist *evlist,

21
tools/perf/util/session.c
View File

@ -205,6 +205,15 @@ static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused,
return 0;
}
static int process_event_synth_event_update_stub(struct perf_tool *tool __maybe_unused,
union perf_event *event __maybe_unused,
struct perf_evlist **pevlist
__maybe_unused)
{
dump_printf(": unhandled!\n");
return 0;
}
static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
union perf_event *event __maybe_unused,
struct perf_sample *sample __maybe_unused,
@ -374,6 +383,8 @@ void perf_tool__fill_defaults(struct perf_tool *tool)
tool->unthrottle = process_event_stub;
if (tool->attr == NULL)
tool->attr = process_event_synth_attr_stub;
if (tool->event_update == NULL)
tool->event_update = process_event_synth_event_update_stub;
if (tool->tracing_data == NULL)
tool->tracing_data = process_event_synth_tracing_data_stub;
if (tool->build_id == NULL)
@ -625,6 +636,13 @@ static void perf_event__hdr_attr_swap(union perf_event *event,
mem_bswap_64(event->attr.id, size);
}
static void perf_event__event_update_swap(union perf_event *event,
bool sample_id_all __maybe_unused)
{
event->event_update.type = bswap_64(event->event_update.type);
event->event_update.id = bswap_64(event->event_update.id);
}
static void perf_event__event_type_swap(union perf_event *event,
bool sample_id_all __maybe_unused)
{
@ -779,6 +797,7 @@ static perf_event__swap_op perf_event__swap_ops[] = {
[PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap,
[PERF_RECORD_STAT] = perf_event__stat_swap,
[PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap,
[PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap,
[PERF_RECORD_HEADER_MAX] = NULL,
};
@ -1290,6 +1309,8 @@ static s64 perf_session__process_user_event(struct perf_session *session,
perf_session__set_comm_exec(session);
}
return err;
case PERF_RECORD_EVENT_UPDATE:
return tool->event_update(tool, event, &session->evlist);
case PERF_RECORD_HEADER_EVENT_TYPE:
/*
* Depreceated, but we need to handle it for sake

1
tools/perf/util/tool.h
View File

@ -50,6 +50,7 @@ struct perf_tool {
throttle,
unthrottle;
event_attr_op attr;
event_attr_op event_update;
event_op2 tracing_data;
event_oe finished_round;
event_op2 build_id,