[PATCH 02/20] perf diff: Refactor diff displacement possition info

Namhyung Kim
2012-10-04T12:51:18Z

From: Jiri Olsa <jolsa@redhat.com>

Moving the position calculation into the diff command, so the position
is prepared inside struct hist_entry data and there's no need to compute
in the output display path.

Removing 'displacement' from struct perf_hpp as it is no longer needed.

Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
tools/perf/builtin-diff.c | 49 ++++++++++++++++++++++++++++---------------
tools/perf/builtin-report.c | 2 +-
tools/perf/builtin-top.c | 2 +-
tools/perf/ui/hist.c | 8 ++++---
tools/perf/ui/stdio/hist.c | 17 +++------------
tools/perf/util/hist.h | 4 +---
tools/perf/util/sort.h | 2 +-
7 files changed, 44 insertions(+), 40 deletions(-)

diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 761f4197a9e2..5cb577a3c5b2 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -70,8 +70,8 @@ static struct perf_tool tool = {
.ordering_requires_timestamps = true,
};

-static void perf_session__insert_hist_entry_by_name(struct rb_root *root,
- struct hist_entry *he)
+static void insert_hist_entry_by_name(struct rb_root *root,
+ struct hist_entry *he)
{
struct rb_node **p = &root->rb_node;
struct rb_node *parent = NULL;
@@ -90,7 +90,7 @@ static void perf_session__insert_hist_entry_by_name(struct rb_root *root,
rb_insert_color(&he->rb_node, root);
}

-static void hists__resort_entries(struct hists *self)
+static void hists__name_resort(struct hists *self, bool sort)
{
unsigned long position = 1;
struct rb_root tmp = RB_ROOT;
@@ -100,12 +100,16 @@ static void hists__resort_entries(struct hists *self)
struct hist_entry *n = rb_entry(next, struct hist_entry, rb_node);

next = rb_next(&n->rb_node);
- rb_erase(&n->rb_node, &self->entries);
n->position = position++;
- perf_session__insert_hist_entry_by_name(&tmp, n);
+
+ if (sort) {
+ rb_erase(&n->rb_node, &self->entries);
+ insert_hist_entry_by_name(&tmp, n);
+ }
}

- self->entries = tmp;
+ if (sort)
+ self->entries = tmp;
}

static struct hist_entry *hists__find_entry(struct hists *self,
@@ -121,7 +125,7 @@ static struct hist_entry *hists__find_entry(struct hists *self,
n = n->rb_left;
else if (cmp > 0)
n = n->rb_right;
- else
+ else
return iter;
}

@@ -150,6 +154,24 @@ static struct perf_evsel *evsel_match(struct perf_evsel *evsel,
return NULL;
}

+static void perf_evlist__resort_hists(struct perf_evlist *evlist, bool name)
+{
+ struct perf_evsel *evsel;
+
+ list_for_each_entry(evsel, &evlist->entries, node) {
+ struct hists *hists = &evsel->hists;
+
+ hists__output_resort(hists);
+
+ /*
+ * The hists__name_resort only sets possition
+ * if name is false.
+ */
+ if (name || ((!name) && show_displacement))
+ hists__name_resort(hists, name);
+ }
+}
+
static int __cmd_diff(void)
{
int ret, i;
@@ -176,15 +198,8 @@ static int __cmd_diff(void)
evlist_old = older->evlist;
evlist_new = newer->evlist;

- list_for_each_entry(evsel, &evlist_new->entries, node)
- hists__output_resort(&evsel->hists);
-
- list_for_each_entry(evsel, &evlist_old->entries, node) {
- hists__output_resort(&evsel->hists);
-
- if (show_displacement)
- hists__resort_entries(&evsel->hists);
- }
+ perf_evlist__resort_hists(evlist_old, true);
+ perf_evlist__resort_hists(evlist_new, false);

list_for_each_entry(evsel, &evlist_new->entries, node) {
struct perf_evsel *evsel_old;
@@ -200,7 +215,7 @@ static int __cmd_diff(void)

hists__match(&evsel_old->hists, &evsel->hists);
hists__fprintf(&evsel->hists, &evsel_old->hists,
- show_displacement, true, 0, 0, stdout);
+ true, 0, 0, stdout);
}

out_delete:
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 1da243dfbc3e..6748cac919d1 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -320,7 +320,7 @@ static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
const char *evname = perf_evsel__name(pos);

hists__fprintf_nr_sample_events(hists, evname, stdout);
- hists__fprintf(hists, NULL, false, true, 0, 0, stdout);
+ hists__fprintf(hists, NULL, true, 0, 0, stdout);
fprintf(stdout, "\n\n");
}

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index e434a16bb5ac..6b8c62918f41 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -316,7 +316,7 @@ static void perf_top__print_sym_table(struct perf_top *top)
hists__output_recalc_col_len(&top->sym_evsel->hists,
top->winsize.ws_row - 3);
putchar('\n');
- hists__fprintf(&top->sym_evsel->hists, NULL, false, false,
+ hists__fprintf(&top->sym_evsel->hists, NULL, false,
top->winsize.ws_row - 4 - printed, win_width, stdout);
}

diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index e3f8cd46e7d7..55b9ca8f084c 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -244,13 +244,15 @@ static int hpp__width_displ(struct perf_hpp *hpp __maybe_unused)
}

static int hpp__entry_displ(struct perf_hpp *hpp,
- struct hist_entry *he __maybe_unused)
+ struct hist_entry *he)
{
+ struct hist_entry *pair = he->pair;
+ long displacement = pair ? pair->position - he->position : 0;
const char *fmt = symbol_conf.field_sep ? "%s" : "%6.6s";
char buf[32] = " ";

- if (hpp->displacement)
- scnprintf(buf, sizeof(buf), "%+4ld", hpp->displacement);
+ if (displacement)
+ scnprintf(buf, sizeof(buf), "%+4ld", displacement);

return scnprintf(hpp->buf, hpp->size, fmt, buf);
}
diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index 882461a42830..d7405f064e88 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -308,7 +308,7 @@ static size_t hist_entry__callchain_fprintf(struct hist_entry *he,

static int hist_entry__fprintf(struct hist_entry *he, size_t size,
struct hists *hists, struct hists *pair_hists,
- long displacement, u64 total_period, FILE *fp)
+ u64 total_period, FILE *fp)
{
char bf[512];
int ret;
@@ -316,7 +316,6 @@ static int hist_entry__fprintf(struct hist_entry *he, size_t size,
.buf = bf,
.size = size,
.total_period = total_period,
- .displacement = displacement,
.ptr = pair_hists,
};
bool color = !symbol_conf.field_sep;
@@ -337,15 +336,13 @@ static int hist_entry__fprintf(struct hist_entry *he, size_t size,
}

size_t hists__fprintf(struct hists *hists, struct hists *pair,
- bool show_displacement, bool show_header, int max_rows,
+ bool show_header, int max_rows,
int max_cols, FILE *fp)
{
struct sort_entry *se;
struct rb_node *nd;
size_t ret = 0;
u64 total_period;
- unsigned long position = 1;
- long displacement = 0;
unsigned int width;
const char *sep = symbol_conf.field_sep;
const char *col_width = symbol_conf.col_width_list_str;
@@ -449,15 +446,7 @@ print_entries:
if (h->filtered)
continue;

- if (show_displacement) {
- if (h->pair != NULL)
- displacement = ((long)h->pair->position -
- (long)position);
- else
- displacement = 0;
- ++position;
- }
- ret += hist_entry__fprintf(h, max_cols, hists, pair, displacement,
+ ret += hist_entry__fprintf(h, max_cols, hists, pair,
total_period, fp);

if (max_rows && ++nr_rows >= max_rows)
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 6ca74079d5c9..efb8fc8a4d24 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -99,8 +99,7 @@ void hists__inc_nr_events(struct hists *self, u32 type);
size_t hists__fprintf_nr_events(struct hists *self, FILE *fp);

size_t hists__fprintf(struct hists *self, struct hists *pair,
- bool show_displacement, bool show_header,
- int max_rows, int max_cols, FILE *fp);
+ bool show_header, int max_rows, int max_cols, FILE *fp);

int hist_entry__inc_addr_samples(struct hist_entry *self, int evidx, u64 addr);
int hist_entry__annotate(struct hist_entry *self, size_t privsize);
@@ -120,7 +119,6 @@ struct perf_hpp {
size_t size;
u64 total_period;
const char *sep;
- long displacement;
void *ptr;
};

diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index eb3959b8e9d9..f070b523c81a 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -73,8 +73,8 @@ struct hist_entry {
u8 filtered;
char *srcline;
struct symbol *parent;
+ unsigned long position;
union {
- unsigned long position;
struct hist_entry *pair;
struct rb_root sorted_chain;
};
--
1.7.9.2