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Date: Thu, 18 Jul 2013 16:49:40 -0300
From: Arnaldo Carvalho de Melo <acme@...radead.org>
To: Ingo Molnar <mingo@...nel.org>
Cc: linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...hat.com>,
Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
Frederic Weisbecker <fweisbec@...il.com>,
Namhyung Kim <namhyung@...nel.org>,
Paul Mackerras <paulus@...ba.org>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 53/76] perf diff: Introducing diff_data object to hold files
From: Jiri Olsa <jolsa@...hat.com>
Introducing struct diff_data to hold data file specifics. It will be
handy when dealing with more than 2 data files.
Signed-off-by: Jiri Olsa <jolsa@...hat.com>
Reviewed-by: Namhyung Kim <namhyung@...nel.org>
Cc: Corey Ashford <cjashfor@...ux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/n/tip-981q265sf6h05zuu8fnvw842@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/perf/builtin-diff.c | 143 ++++++++++++++++++++++++++++++----------------
1 file changed, 95 insertions(+), 48 deletions(-)
diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 0aac5f3..015ca2d 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -19,10 +19,24 @@
#include <stdlib.h>
-static char const *input_old = "perf.data.old",
- *input_new = "perf.data";
-static char diff__default_sort_order[] = "dso,symbol";
-static bool force;
+struct data__file {
+ struct perf_session *session;
+ const char *file;
+ int idx;
+};
+
+static struct data__file *data__files;
+static int data__files_cnt;
+
+#define data__for_each_file_start(i, d, s) \
+ for (i = s, d = &data__files[s]; \
+ i < data__files_cnt; \
+ i++, d = &data__files[i])
+
+#define data__for_each_file(i, d) data__for_each_file_start(i, d, 0)
+
+static char diff__default_sort_order[] = "dso,symbol";
+static bool force;
static bool show_period;
static bool show_formula;
static bool show_baseline_only;
@@ -467,56 +481,62 @@ static void hists__process(struct hists *old, struct hists *new)
hists__fprintf(new, true, 0, 0, 0, stdout);
}
-static int __cmd_diff(void)
+static void data_process(void)
{
- int ret, i;
-#define older (session[0])
-#define newer (session[1])
- struct perf_session *session[2];
- struct perf_evlist *evlist_new, *evlist_old;
- struct perf_evsel *evsel;
+ struct perf_evlist *evlist_old = data__files[0].session->evlist;
+ struct perf_evlist *evlist_new = data__files[1].session->evlist;
+ struct perf_evsel *evsel_old;
bool first = true;
- older = perf_session__new(input_old, O_RDONLY, force, false,
- &tool);
- newer = perf_session__new(input_new, O_RDONLY, force, false,
- &tool);
- if (session[0] == NULL || session[1] == NULL)
- return -ENOMEM;
+ list_for_each_entry(evsel_old, &evlist_old->entries, node) {
+ struct perf_evsel *evsel_new;
- for (i = 0; i < 2; ++i) {
- ret = perf_session__process_events(session[i], &tool);
- if (ret)
- goto out_delete;
- }
+ evsel_new = evsel_match(evsel_old, evlist_new);
+ if (!evsel_new)
+ continue;
- evlist_old = older->evlist;
- evlist_new = newer->evlist;
+ fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
+ perf_evsel__name(evsel_old));
- perf_evlist__collapse_resort(evlist_old);
- perf_evlist__collapse_resort(evlist_new);
+ first = false;
- list_for_each_entry(evsel, &evlist_new->entries, node) {
- struct perf_evsel *evsel_old;
+ hists__process(&evsel_old->hists, &evsel_new->hists);
+ }
+}
- evsel_old = evsel_match(evsel, evlist_old);
- if (!evsel_old)
- continue;
+static int __cmd_diff(void)
+{
+ struct data__file *d;
+ int ret = -EINVAL, i;
+
+ data__for_each_file(i, d) {
+ d->session = perf_session__new(d->file, O_RDONLY, force,
+ false, &tool);
+ if (!d->session) {
+ pr_err("Failed to open %s\n", d->file);
+ ret = -ENOMEM;
+ goto out_delete;
+ }
- fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
- perf_evsel__name(evsel));
+ ret = perf_session__process_events(d->session, &tool);
+ if (ret) {
+ pr_err("Failed to process %s\n", d->file);
+ goto out_delete;
+ }
- first = false;
+ perf_evlist__collapse_resort(d->session->evlist);
+ }
+
+ data_process();
- hists__process(&evsel_old->hists, &evsel->hists);
+ out_delete:
+ data__for_each_file(i, d) {
+ if (d->session)
+ perf_session__delete(d->session);
}
-out_delete:
- for (i = 0; i < 2; ++i)
- perf_session__delete(session[i]);
+ free(data__files);
return ret;
-#undef older
-#undef newer
}
static const char * const diff_usage[] = {
@@ -589,27 +609,54 @@ static void ui_init(void)
}
}
-int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused)
+static int data_init(int argc, const char **argv)
{
- sort_order = diff__default_sort_order;
- argc = parse_options(argc, argv, options, diff_usage, 0);
+ struct data__file *d;
+ static const char *defaults[] = {
+ "perf.data.old",
+ "perf.data",
+ };
+ int i;
+
+ data__files_cnt = 2;
+
if (argc) {
if (argc > 2)
usage_with_options(diff_usage, options);
if (argc == 2) {
- input_old = argv[0];
- input_new = argv[1];
+ defaults[0] = argv[0];
+ defaults[1] = argv[1];
} else
- input_new = argv[0];
+ defaults[1] = argv[0];
} else if (symbol_conf.default_guest_vmlinux_name ||
symbol_conf.default_guest_kallsyms) {
- input_old = "perf.data.host";
- input_new = "perf.data.guest";
+ defaults[0] = "perf.data.host";
+ defaults[1] = "perf.data.guest";
}
+ data__files = zalloc(sizeof(*data__files) * data__files_cnt);
+ if (!data__files)
+ return -ENOMEM;
+
+ data__for_each_file(i, d) {
+ d->file = defaults[i];
+ d->idx = i;
+ }
+
+ return 0;
+}
+
+int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused)
+{
+ sort_order = diff__default_sort_order;
+ argc = parse_options(argc, argv, options, diff_usage, 0);
+
if (symbol__init() < 0)
return -1;
+ if (data_init(argc, argv) < 0)
+ return -1;
+
ui_init();
if (setup_sorting() < 0)
--
1.8.1.4
--
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