[PATCH 03/20] perf hists: Separate overhead and baseline columns

Namhyung Kim
2012-10-04T12:56:51Z

From: Jiri Olsa <jolsa@redhat.com>

Currently the overhead and baseline columns are handled within
single function and the distinction is made by 'baseline hists'
pointer passed by 'struct perf_hpp::ptr'.

Since hists pointer is now part of each hist_entry, it's possible
to locate paired hists pointer directly from the passed struct
hist_entry pointer.

Also separating those 2 columns makes the code more obvious.

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/ui/hist.c | 74 ++++++++++++++++++++++++++++----------------
tools/perf/ui/stdio/hist.c | 11 +++++--
tools/perf/util/hist.h | 1 +
3 files changed, 58 insertions(+), 28 deletions(-)

diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index 55b9ca8f084c..532a60177c32 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -8,9 +8,7 @@
/* hist period print (hpp) functions */
static int hpp__header_overhead(struct perf_hpp *hpp)
{
- const char *fmt = hpp->ptr ? "Baseline" : "Overhead";
-
- return scnprintf(hpp->buf, hpp->size, fmt);
+ return scnprintf(hpp->buf, hpp->size, "Overhead");
}

static int hpp__width_overhead(struct perf_hpp *hpp __maybe_unused)
@@ -22,17 +20,6 @@ static int hpp__color_overhead(struct perf_hpp *hpp, struct hist_entry *he)
{
double percent = 100.0 * he->period / hpp->total_period;

- if (hpp->ptr) {
- struct hists *old_hists = hpp->ptr;
- u64 total_period = old_hists->stats.total_period;
- u64 base_period = he->pair ? he->pair->period : 0;
-
- if (total_period)
- percent = 100.0 * base_period / total_period;
- else
- percent = 0.0;
- }
-
return percent_color_snprintf(hpp->buf, hpp->size, " %6.2f%%", percent);
}

@@ -41,17 +28,6 @@ static int hpp__entry_overhead(struct perf_hpp *hpp, struct hist_entry *he)
double percent = 100.0 * he->period / hpp->total_period;
const char *fmt = symbol_conf.field_sep ? "%.2f" : " %6.2f%%";

- if (hpp->ptr) {
- struct hists *old_hists = hpp->ptr;
- u64 total_period = old_hists->stats.total_period;
- u64 base_period = he->pair ? he->pair->period : 0;
-
- if (total_period)
- percent = 100.0 * base_period / total_period;
- else
- percent = 0.0;
- }
-
return scnprintf(hpp->buf, hpp->size, fmt, percent);
}

@@ -159,6 +135,47 @@ static int hpp__entry_overhead_guest_us(struct perf_hpp *hpp,
return scnprintf(hpp->buf, hpp->size, fmt, percent);
}

+static int hpp__header_baseline(struct perf_hpp *hpp)
+{
+ return scnprintf(hpp->buf, hpp->size, "Baseline");
+}
+
+static int hpp__width_baseline(struct perf_hpp *hpp __maybe_unused)
+{
+ return 8;
+}
+
+static double baseline_percent(struct hist_entry *he)
+{
+ struct hist_entry *pair = he->pair;
+ struct hists *pair_hists = pair ? pair->hists : NULL;
+ double percent = 0.0;
+
+ if (pair) {
+ u64 total_period = pair_hists->stats.total_period;
+ u64 base_period = pair->period;
+
+ percent = 100.0 * base_period / total_period;
+ }
+
+ return percent;
+}
+
+static int hpp__color_baseline(struct perf_hpp *hpp, struct hist_entry *he)
+{
+ double percent = baseline_percent(he);
+
+ return percent_color_snprintf(hpp->buf, hpp->size, " %6.2f%%", percent);
+}
+
+static int hpp__entry_baseline(struct perf_hpp *hpp, struct hist_entry *he)
+{
+ double percent = baseline_percent(he);
+ const char *fmt = symbol_conf.field_sep ? "%.2f" : " %6.2f%%";
+
+ return scnprintf(hpp->buf, hpp->size, fmt, percent);
+}
+
static int hpp__header_samples(struct perf_hpp *hpp)
{
const char *fmt = symbol_conf.field_sep ? "%s" : "%11s";
@@ -269,6 +286,7 @@ static int hpp__entry_displ(struct perf_hpp *hpp,
.entry = hpp__entry_ ## _name

struct perf_hpp_fmt perf_hpp__format[] = {
+ { .cond = false, HPP__COLOR_PRINT_FNS(baseline) },
{ .cond = true, HPP__COLOR_PRINT_FNS(overhead) },
{ .cond = false, HPP__COLOR_PRINT_FNS(overhead_sys) },
{ .cond = false, HPP__COLOR_PRINT_FNS(overhead_us) },
@@ -302,6 +320,8 @@ void perf_hpp__init(bool need_pair, bool show_displacement)
perf_hpp__format[PERF_HPP__PERIOD].cond = true;

if (need_pair) {
+ perf_hpp__format[PERF_HPP__OVERHEAD].cond = false;
+ perf_hpp__format[PERF_HPP__BASELINE].cond = true;
perf_hpp__format[PERF_HPP__DELTA].cond = true;

if (show_displacement)
@@ -321,6 +341,7 @@ int hist_entry__period_snprintf(struct perf_hpp *hpp, struct hist_entry *he,
const char *sep = symbol_conf.field_sep;
char *start = hpp->buf;
int i, ret;
+ bool first = true;

if (symbol_conf.exclude_other && !he->parent)
return 0;
@@ -329,9 +350,10 @@ int hist_entry__period_snprintf(struct perf_hpp *hpp, struct hist_entry *he,
if (!perf_hpp__format[i].cond)
continue;

- if (!sep || i > 0) {
+ if (!sep || !first) {
ret = scnprintf(hpp->buf, hpp->size, "%s", sep ?: " ");
advance_hpp(hpp, ret);
+ first = false;
}

if (color && perf_hpp__format[i].color)
diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index d7405f064e88..0aa6776caba5 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -353,6 +353,7 @@ size_t hists__fprintf(struct hists *hists, struct hists *pair,
.size = sizeof(bf),
.ptr = pair,
};
+ bool first = true;

init_rem_hits();

@@ -364,8 +365,10 @@ size_t hists__fprintf(struct hists *hists, struct hists *pair,
if (!perf_hpp__format[idx].cond)
continue;

- if (idx)
+ if (!first)
fprintf(fp, "%s", sep ?: " ");
+ else
+ first = false;

perf_hpp__format[idx].header(&dummy_hpp);
fprintf(fp, "%s", bf);
@@ -400,6 +403,8 @@ size_t hists__fprintf(struct hists *hists, struct hists *pair,
if (sep)
goto print_entries;

+ first = true;
+
fprintf(fp, "# ");
for (idx = 0; idx < PERF_HPP__MAX_INDEX; idx++) {
unsigned int i;
@@ -407,8 +412,10 @@ size_t hists__fprintf(struct hists *hists, struct hists *pair,
if (!perf_hpp__format[idx].cond)
continue;

- if (idx)
+ if (!first)
fprintf(fp, "%s", sep ?: " ");
+ else
+ first = false;

width = perf_hpp__format[idx].width(&dummy_hpp);
for (i = 0; i < width; i++)
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index efb8fc8a4d24..b1a2b9d9b658 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -133,6 +133,7 @@ struct perf_hpp_fmt {
extern struct perf_hpp_fmt perf_hpp__format[];

enum {
+ PERF_HPP__BASELINE,
PERF_HPP__OVERHEAD,
PERF_HPP__OVERHEAD_SYS,
PERF_HPP__OVERHEAD_US,
--
1.7.9.2