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Subject[PATCH 3/7] perf tools: Save column length in perf_hpp_fmt
Date
Save column length in the hpp format and pass it to print functions.
This is a preparation for users to control column width in the output.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
tools/perf/ui/browsers/hists.c | 2 +-
tools/perf/ui/hist.c | 135 +++++++++++++++++++++++++++--------------
tools/perf/util/hist.h | 2 +
tools/perf/util/sort.c | 3 +-
4 files changed, 94 insertions(+), 48 deletions(-)

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 02507ba944e3..c1d8d3925fe1 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -849,7 +849,7 @@ static int hists__scnprintf_headers(char *buf, size_t size, struct hists *hists)
if (perf_hpp__should_skip(fmt))
continue;

- /* We need to add the length of the columns header. */
+ /* We need to ensure length of the columns header. */
perf_hpp__reset_width(fmt, hists);

ret = fmt->header(fmt, &dummy_hpp, hists_to_evsel(hists));
diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index c6cffbd0b0e1..e28ca972d046 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -110,7 +110,7 @@ int __hpp__fmt_acc(struct perf_hpp *hpp, struct hist_entry *he,
{
if (!symbol_conf.cumulate_callchain) {
return snprintf(hpp->buf, hpp->size, "%*s",
- fmt_percent ? 8 : 12, "N/A");
+ fmt_percent ? len + 2 : len + 1, "N/A");
}

return __hpp__fmt(hpp, he, get_field, fmt, len, print_fn, fmt_percent);
@@ -190,32 +190,31 @@ static int __hpp__sort_acc(struct hist_entry *a, struct hist_entry *b,
return ret;
}

-#define __HPP_HEADER_FN(_type, _str, _min_width, _unit_width) \
-static int hpp__header_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \
- struct perf_hpp *hpp, \
- struct perf_evsel *evsel) \
-{ \
- int len = _min_width; \
- \
- if (symbol_conf.event_group) \
- len = max(len, evsel->nr_members * _unit_width); \
- \
- return scnprintf(hpp->buf, hpp->size, "%*s", len, _str); \
-}
-
-#define __HPP_WIDTH_FN(_type, _min_width, _unit_width) \
-static int hpp__width_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \
+#define __HPP_WIDTH_FN(_type, _str) \
+static int hpp__width_##_type(struct perf_hpp_fmt *fmt, \
struct perf_hpp *hpp __maybe_unused, \
struct perf_evsel *evsel) \
{ \
- int len = _min_width; \
+ int len = fmt->len; \
\
if (symbol_conf.event_group) \
- len = max(len, evsel->nr_members * _unit_width); \
+ len = max(len, evsel->nr_members * len); \
+ \
+ if (len < (int)strlen(_str)) \
+ len = strlen(_str); \
\
return len; \
}

+#define __HPP_HEADER_FN(_type, _str) \
+static int hpp__header_##_type(struct perf_hpp_fmt *fmt, \
+ struct perf_hpp *hpp, \
+ struct perf_evsel *evsel) \
+{ \
+ int len = hpp__width_##_type(fmt, hpp, evsel); \
+ return scnprintf(hpp->buf, hpp->size, "%*s", len, _str); \
+}
+
static int hpp_color_scnprintf(struct perf_hpp *hpp, const char *fmt, ...)
{
va_list args;
@@ -251,18 +250,19 @@ static u64 he_get_##_field(struct hist_entry *he) \
return he->stat._field; \
} \
\
-static int hpp__color_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \
+static int hpp__color_##_type(struct perf_hpp_fmt *fmt, \
struct perf_hpp *hpp, struct hist_entry *he) \
{ \
- return __hpp__fmt(hpp, he, he_get_##_field, " %*.2f%%", 6, \
+ int len = fmt->len - 2; /* 2 for a space and a % sign */ \
+ return __hpp__fmt(hpp, he, he_get_##_field, " %*.2f%%", len, \
hpp_color_scnprintf, true); \
}

#define __HPP_ENTRY_PERCENT_FN(_type, _field) \
-static int hpp__entry_##_type(struct perf_hpp_fmt *_fmt __maybe_unused, \
+static int hpp__entry_##_type(struct perf_hpp_fmt *fmt, \
struct perf_hpp *hpp, struct hist_entry *he) \
{ \
- int len = symbol_conf.field_sep ? 1 : 6; \
+ int len = symbol_conf.field_sep ? 1 : fmt->len - 2; \
return __hpp__fmt(hpp, he, he_get_##_field, " %*.2f%%", len, \
hpp_entry_scnprintf, true); \
}
@@ -279,18 +279,19 @@ static u64 he_get_acc_##_field(struct hist_entry *he) \
return he->stat_acc->_field; \
} \
\
-static int hpp__color_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \
+static int hpp__color_##_type(struct perf_hpp_fmt *fmt, \
struct perf_hpp *hpp, struct hist_entry *he) \
{ \
- return __hpp__fmt_acc(hpp, he, he_get_acc_##_field, " %*.2f%%", 6, \
+ int len = fmt->len - 2; /* 2 for a space and a % sign */ \
+ return __hpp__fmt_acc(hpp, he, he_get_acc_##_field, " %*.2f%%", len, \
hpp_color_scnprintf, true); \
}

#define __HPP_ENTRY_ACC_PERCENT_FN(_type, _field) \
-static int hpp__entry_##_type(struct perf_hpp_fmt *_fmt __maybe_unused, \
+static int hpp__entry_##_type(struct perf_hpp_fmt *fmt, \
struct perf_hpp *hpp, struct hist_entry *he) \
{ \
- int len = symbol_conf.field_sep ? 1 : 6; \
+ int len = symbol_conf.field_sep ? 1 : fmt->len - 2; \
return __hpp__fmt_acc(hpp, he, he_get_##_field, " %*.2f%%", len, \
hpp_entry_scnprintf, true); \
}
@@ -307,10 +308,10 @@ static u64 he_get_raw_##_field(struct hist_entry *he) \
return he->stat._field; \
} \
\
-static int hpp__entry_##_type(struct perf_hpp_fmt *_fmt __maybe_unused, \
+static int hpp__entry_##_type(struct perf_hpp_fmt *fmt, \
struct perf_hpp *hpp, struct hist_entry *he) \
{ \
- int len = symbol_conf.field_sep ? 1 : 11; \
+ int len = symbol_conf.field_sep ? 1 : fmt->len - 1; \
return __hpp__fmt(hpp, he, he_get_raw_##_field, " %*"PRIu64, len, \
hpp_entry_scnprintf, false); \
}
@@ -322,37 +323,38 @@ static int64_t hpp__sort_##_type(struct hist_entry *a, struct hist_entry *b) \
}


-#define HPP_PERCENT_FNS(_type, _str, _field, _min_width, _unit_width) \
-__HPP_HEADER_FN(_type, _str, _min_width, _unit_width) \
-__HPP_WIDTH_FN(_type, _min_width, _unit_width) \
+#define HPP_PERCENT_FNS(_type, _str, _field) \
+__HPP_WIDTH_FN(_type, _str) \
+__HPP_HEADER_FN(_type, _str) \
__HPP_COLOR_PERCENT_FN(_type, _field) \
__HPP_ENTRY_PERCENT_FN(_type, _field) \
__HPP_SORT_FN(_type, _field)

-#define HPP_PERCENT_ACC_FNS(_type, _str, _field, _min_width, _unit_width)\
-__HPP_HEADER_FN(_type, _str, _min_width, _unit_width) \
-__HPP_WIDTH_FN(_type, _min_width, _unit_width) \
+#define HPP_PERCENT_ACC_FNS(_type, _str, _field) \
+__HPP_WIDTH_FN(_type, _str) \
+__HPP_HEADER_FN(_type, _str) \
__HPP_COLOR_ACC_PERCENT_FN(_type, _field) \
__HPP_ENTRY_ACC_PERCENT_FN(_type, _field) \
__HPP_SORT_ACC_FN(_type, _field)

-#define HPP_RAW_FNS(_type, _str, _field, _min_width, _unit_width) \
-__HPP_HEADER_FN(_type, _str, _min_width, _unit_width) \
-__HPP_WIDTH_FN(_type, _min_width, _unit_width) \
+#define HPP_RAW_FNS(_type, _str, _field) \
+__HPP_WIDTH_FN(_type, _str) \
+__HPP_HEADER_FN(_type, _str) \
__HPP_ENTRY_RAW_FN(_type, _field) \
__HPP_SORT_RAW_FN(_type, _field)

-__HPP_HEADER_FN(overhead_self, "Self", 8, 8)
+__HPP_WIDTH_FN(overhead_self, "Self")
+__HPP_HEADER_FN(overhead_self, "Self")

-HPP_PERCENT_FNS(overhead, "Overhead", period, 8, 8)
-HPP_PERCENT_FNS(overhead_sys, "sys", period_sys, 8, 8)
-HPP_PERCENT_FNS(overhead_us, "usr", period_us, 8, 8)
-HPP_PERCENT_FNS(overhead_guest_sys, "guest sys", period_guest_sys, 9, 8)
-HPP_PERCENT_FNS(overhead_guest_us, "guest usr", period_guest_us, 9, 8)
-HPP_PERCENT_ACC_FNS(overhead_acc, "Children", period, 8, 8)
+HPP_PERCENT_FNS(overhead, "Overhead", period)
+HPP_PERCENT_FNS(overhead_sys, "sys", period_sys)
+HPP_PERCENT_FNS(overhead_us, "usr", period_us)
+HPP_PERCENT_FNS(overhead_guest_sys, "guest sys", period_guest_sys)
+HPP_PERCENT_FNS(overhead_guest_us, "guest usr", period_guest_us)
+HPP_PERCENT_ACC_FNS(overhead_acc, "Children", period)

-HPP_RAW_FNS(samples, "Samples", nr_events, 12, 12)
-HPP_RAW_FNS(period, "Period", period, 12, 12)
+HPP_RAW_FNS(samples, "Samples", nr_events)
+HPP_RAW_FNS(period, "Period", period)

static int64_t hpp__nop_cmp(struct hist_entry *a __maybe_unused,
struct hist_entry *b __maybe_unused)
@@ -453,6 +455,8 @@ void perf_hpp__init(void)

perf_hpp__format[PERF_HPP__OVERHEAD].header =
hpp__header_overhead_self;
+ perf_hpp__format[PERF_HPP__OVERHEAD].width =
+ hpp__width_overhead_self;
}

perf_hpp__column_enable(PERF_HPP__OVERHEAD);
@@ -519,6 +523,7 @@ void perf_hpp__cancel_cumulate(void)

perf_hpp__column_disable(PERF_HPP__OVERHEAD_ACC);
perf_hpp__format[PERF_HPP__OVERHEAD].header = hpp__header_overhead;
+ perf_hpp__format[PERF_HPP__OVERHEAD].width = hpp__width_overhead;
}

void perf_hpp__setup_output_field(void)
@@ -623,3 +628,41 @@ unsigned int hists__sort_list_width(struct hists *hists)

return ret;
}
+
+void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists)
+{
+ int idx;
+
+ if (perf_hpp__is_sort_entry(fmt))
+ return perf_hpp__reset_sort_width(fmt, hists);
+
+ for (idx = 0; idx < PERF_HPP__MAX_INDEX; idx++) {
+ if (fmt == &perf_hpp__format[idx])
+ break;
+ }
+
+ if (idx == PERF_HPP__MAX_INDEX)
+ return;
+
+ switch (idx) {
+ case PERF_HPP__OVERHEAD:
+ case PERF_HPP__OVERHEAD_SYS:
+ case PERF_HPP__OVERHEAD_US:
+ case PERF_HPP__OVERHEAD_ACC:
+ fmt->len = 8;
+ break;
+
+ case PERF_HPP__OVERHEAD_GUEST_SYS:
+ case PERF_HPP__OVERHEAD_GUEST_US:
+ fmt->len = 9;
+ break;
+
+ case PERF_HPP__SAMPLES:
+ case PERF_HPP__PERIOD:
+ fmt->len = 12;
+ break;
+
+ default:
+ break;
+ }
+}
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 13d074db9ef1..a7ae890f4c71 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -207,6 +207,7 @@ struct perf_hpp_fmt {
struct list_head list;
struct list_head sort_list;
bool elide;
+ int len;
};

extern struct list_head perf_hpp__list;
@@ -261,6 +262,7 @@ static inline bool perf_hpp__should_skip(struct perf_hpp_fmt *format)
}

void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists);
+void perf_hpp__reset_sort_width(struct perf_hpp_fmt *fmt, struct hists *hists);

typedef u64 (*hpp_field_fn)(struct hist_entry *he);
typedef int (*hpp_callback_fn)(struct perf_hpp *hpp, bool front);
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index eda9ee836cee..a7f8a7b0eced 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -1194,7 +1194,7 @@ bool perf_hpp__same_sort_entry(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b)
return hse_a->se == hse_b->se;
}

-void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists)
+void perf_hpp__reset_sort_width(struct perf_hpp_fmt *fmt, struct hists *hists)
{
struct hpp_sort_entry *hse;

@@ -1265,6 +1265,7 @@ __sort_dimension__alloc_hpp(struct sort_dimension *sd)
INIT_LIST_HEAD(&hse->hpp.list);
INIT_LIST_HEAD(&hse->hpp.sort_list);
hse->hpp.elide = false;
+ hse->hpp.len = 0;

return hse;
}
--
2.0.0


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