Adding -b option to perf diff command to display only entries
with match in the baseline.
Cc: Arnaldo Carvalho de Melo <a...@ghostprotocols.net>
Cc: Peter Zijlstra <a.p.zijls...@chello.nl>
Cc: Ingo Molnar <mi...@elte.hu>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Corey Ashford <cjash...@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweis...@gmail.com>
Cc: Paul E. McKenney <paul...@linux.vnet.ibm.com>
Cc: Andi Kleen <a...@firstfloor.org>
Cc: David Ahern <dsah...@gmail.com>
Cc: Namhyung Kim <namhy...@kernel.org>
Signed-off-by: Jiri Olsa <jo...@redhat.com>
---
tools/perf/Documentation/perf-diff.txt | 4 ++++
tools/perf/builtin-diff.c | 31 +++++++++++++++++++++++++++++--
2 files changed, 33 insertions(+), 2 deletions(-)
diff --git a/tools/perf/Documentation/perf-diff.txt
b/tools/perf/Documentation/perf-diff.txt
index ab7f667..6ce9585 100644
--- a/tools/perf/Documentation/perf-diff.txt
+++ b/tools/perf/Documentation/perf-diff.txt
@@ -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]
diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 282fd5e..46f4a10 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -25,6 +25,7 @@ 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)
@@ -173,6 +174,31 @@ static void resort_evlist(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;
@@ -214,8 +240,7 @@ 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:
@@ -236,6 +261,8 @@ 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"),
--
1.7.11.4
--
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