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perf c2c report: Add sample processing

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Adding basic sample processing specific hist_entry allocation callbacks
(via hists__add_entry_ops).

Overloading 'struct hist_entry' object with new 'struct c2c_hist_entry'.
The new hist entry object will carry specific stats and nested hists
objects.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1474558645-19956-17-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa
2016-09-22 17:36:44 +02:00
committed by Arnaldo Carvalho de Melo
parent 5f2eca833c
commit 78b2754378
1 changed files with 107 additions and 1 deletions
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108
tools/perf/builtin-c2c.c
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@@ -16,6 +16,15 @@ struct c2c_hists {
struct perf_hpp_list list;
};
struct c2c_hist_entry {
struct c2c_hists *hists;
/*
* must be at the end,
* because of its callchain dynamic entry
*/
struct hist_entry he;
};
struct perf_c2c {
struct perf_tool tool;
struct c2c_hists hists;
@@ -23,6 +32,86 @@ struct perf_c2c {
static struct perf_c2c c2c;
static void *c2c_he_zalloc(size_t size)
{
struct c2c_hist_entry *c2c_he;
c2c_he = zalloc(size + sizeof(*c2c_he));
if (!c2c_he)
return NULL;
return &c2c_he->he;
}
static void c2c_he_free(void *he)
{
struct c2c_hist_entry *c2c_he;
c2c_he = container_of(he, struct c2c_hist_entry, he);
if (c2c_he->hists) {
hists__delete_entries(&c2c_he->hists->hists);
free(c2c_he->hists);
}
free(c2c_he);
}
static struct hist_entry_ops c2c_entry_ops = {
.new = c2c_he_zalloc,
.free = c2c_he_free,
};
static int process_sample_event(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_sample *sample,
struct perf_evsel *evsel __maybe_unused,
struct machine *machine)
{
struct hists *hists = &c2c.hists.hists;
struct hist_entry *he;
struct addr_location al;
struct mem_info *mi;
int ret;
if (machine__resolve(machine, &al, sample) < 0) {
pr_debug("problem processing %d event, skipping it.\n",
event->header.type);
return -1;
}
mi = sample__resolve_mem(sample, &al);
if (mi == NULL)
return -ENOMEM;
he = hists__add_entry_ops(hists, &c2c_entry_ops,
&al, NULL, NULL, mi,
sample, true);
if (he == NULL) {
free(mi);
return -ENOMEM;
}
hists__inc_nr_samples(hists, he->filtered);
ret = hist_entry__append_callchain(he, sample);
addr_location__put(&al);
return ret;
}
static struct perf_c2c c2c = {
.tool = {
.sample = process_sample_event,
.mmap = perf_event__process_mmap,
.mmap2 = perf_event__process_mmap2,
.comm = perf_event__process_comm,
.exit = perf_event__process_exit,
.fork = perf_event__process_fork,
.lost = perf_event__process_lost,
.ordered_events = true,
.ordering_requires_timestamps = true,
},
};
static const char * const c2c_usage[] = {
"perf c2c {record|report}",
NULL
@@ -314,6 +403,7 @@ static int c2c_hists__reinit(struct c2c_hists *c2c_hists,
static int perf_c2c__report(int argc, const char **argv)
{
struct perf_session *session;
struct ui_progress prog;
struct perf_data_file file = {
.mode = PERF_DATA_MODE_READ,
};
@@ -330,9 +420,12 @@ static int perf_c2c__report(int argc, const char **argv)
argc = parse_options(argc, argv, c2c_options, report_c2c_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
if (!argc)
if (argc)
usage_with_options(report_c2c_usage, c2c_options);
if (!input_name || !strlen(input_name))
input_name = "perf.data";
file.path = input_name;
err = c2c_hists__init(&c2c.hists, "dcacheline");
@@ -356,6 +449,19 @@ static int perf_c2c__report(int argc, const char **argv)
goto out_session;
}
err = perf_session__process_events(session);
if (err) {
pr_err("failed to process sample\n");
goto out_session;
}
ui_progress__init(&prog, c2c.hists.hists.nr_entries, "Sorting...");
hists__collapse_resort(&c2c.hists.hists, NULL);
hists__output_resort(&c2c.hists.hists, &prog);
ui_progress__finish();
out_session:
perf_session__delete(session);
out: