perf tools: Save column length in perf_hpp_fmt

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>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1406785662-5534-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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;
 }