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perf diff: Add -b option for perf diff to display paired entries only 

Adding -b option to perf diff command to display only entries with match
in the baseline.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1349448287-18919-2-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2012-10-05 16:44:40 +02:00 committed by Arnaldo Carvalho de Melo
parent f15eb531d3
commit a06d143e7c
2 changed files with 33 additions and 2 deletions
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4
tools/perf/Documentation/perf-diff.txt
View File

@ -72,6 +72,10 @@ OPTIONS
--symfs=<directory>::
Look for files with symbols relative to this directory.
-b::
--baseline-only::
Show only items with match in baseline.
SEE ALSO
--------
linkperf:perf-record[1]

31
tools/perf/builtin-diff.c
View File

@ -24,6 +24,7 @@ static char const *input_old = "perf.data.old",
static char diff__default_sort_order[] = "dso,symbol";
static bool force;
static bool show_displacement;
static bool show_baseline_only;
static int hists__add_entry(struct hists *self,
struct addr_location *al, u64 period)
@ -172,6 +173,31 @@ static void perf_evlist__resort_hists(struct perf_evlist *evlist, bool name)
}
}
static void hists__baseline_only(struct hists *hists)
{
struct rb_node *next = rb_first(&hists->entries);
while (next != NULL) {
struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node);
next = rb_next(&he->rb_node);
if (!he->pair) {
rb_erase(&he->rb_node, &hists->entries);
hist_entry__free(he);
}
}
}
static void hists__process(struct hists *old, struct hists *new)
{
hists__match(old, new);
if (show_baseline_only)
hists__baseline_only(new);
hists__fprintf(new, true, 0, 0, stdout);
}
static int __cmd_diff(void)
{
int ret, i;
@ -213,8 +239,7 @@ static int __cmd_diff(void)
first = false;
hists__match(&evsel_old->hists, &evsel->hists);
hists__fprintf(&evsel->hists, true, 0, 0, stdout);
hists__process(&evsel_old->hists, &evsel->hists);
}
out_delete:
@ -235,6 +260,8 @@ static const struct option options[] = {
"be more verbose (show symbol address, etc)"),
OPT_BOOLEAN('M', "displacement", &show_displacement,
"Show position displacement relative to baseline"),
OPT_BOOLEAN('b', "baseline-only", &show_baseline_only,
"Show only items with match in baseline"),
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
"dump raw trace in ASCII"),
OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),