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Subject[PATCH v2 3/3] perf util: Support color ops to print block percents in color
Date
It would be nice to print the block percents with colors.

This patch supports the 'Sampled Cycles%' and 'Avg Cycles%'
printed in colors.

For example,

perf record -b ...
perf report --total-cycles or perf report --total-cycles --stdio

percent > 5%, colored in red
percent > 0.5%, colored in green
percent < 0.5%, default color

v2:
---
No functional change

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
---
tools/perf/util/block-info.c | 25 +++++++++++++++----------
1 file changed, 15 insertions(+), 10 deletions(-)

diff --git a/tools/perf/util/block-info.c b/tools/perf/util/block-info.c
index 0818db17b3f2..60b3a0107177 100644
--- a/tools/perf/util/block-info.c
+++ b/tools/perf/util/block-info.c
@@ -185,6 +185,17 @@ static int block_column_width(struct perf_hpp_fmt *fmt,
return block_fmt->width;
}

+static int color_pct(struct perf_hpp *hpp, int width, double pct)
+{
+#ifdef HAVE_SLANG_SUPPORT
+ if (use_browser) {
+ return __hpp__slsmg_color_printf(hpp, "%*.2f%%",
+ width - 1, pct);
+ }
+#endif
+ return hpp_color_scnprintf(hpp, "%*.2f%%", width - 1, pct);
+}
+
static int block_total_cycles_pct_entry(struct perf_hpp_fmt *fmt,
struct perf_hpp *hpp,
struct hist_entry *he)
@@ -192,14 +203,11 @@ static int block_total_cycles_pct_entry(struct perf_hpp_fmt *fmt,
struct block_fmt *block_fmt = container_of(fmt, struct block_fmt, fmt);
struct block_info *bi = he->block_info;
double ratio = 0.0;
- char buf[16];

if (block_fmt->total_cycles)
ratio = (double)bi->cycles / (double)block_fmt->total_cycles;

- sprintf(buf, "%.2f%%", 100.0 * ratio);
-
- return scnprintf(hpp->buf, hpp->size, "%*s", block_fmt->width, buf);
+ return color_pct(hpp, block_fmt->width, 100.0 * ratio);
}

static int64_t block_total_cycles_pct_sort(struct perf_hpp_fmt *fmt,
@@ -252,16 +260,13 @@ static int block_cycles_pct_entry(struct perf_hpp_fmt *fmt,
struct block_info *bi = he->block_info;
double ratio = 0.0;
u64 avg;
- char buf[16];

if (block_fmt->block_cycles && bi->num_aggr) {
avg = bi->cycles_aggr / bi->num_aggr;
ratio = (double)avg / (double)block_fmt->block_cycles;
}

- sprintf(buf, "%.2f%%", 100.0 * ratio);
-
- return scnprintf(hpp->buf, hpp->size, "%*s", block_fmt->width, buf);
+ return color_pct(hpp, block_fmt->width, 100.0 * ratio);
}

static int block_avg_cycles_entry(struct perf_hpp_fmt *fmt,
@@ -348,7 +353,7 @@ static void hpp_register(struct block_fmt *block_fmt, int idx,

switch (idx) {
case PERF_HPP_REPORT__BLOCK_TOTAL_CYCLES_PCT:
- fmt->entry = block_total_cycles_pct_entry;
+ fmt->color = block_total_cycles_pct_entry;
fmt->cmp = block_info__cmp;
fmt->sort = block_total_cycles_pct_sort;
break;
@@ -356,7 +361,7 @@ static void hpp_register(struct block_fmt *block_fmt, int idx,
fmt->entry = block_cycles_lbr_entry;
break;
case PERF_HPP_REPORT__BLOCK_CYCLES_PCT:
- fmt->entry = block_cycles_pct_entry;
+ fmt->color = block_cycles_pct_entry;
break;
case PERF_HPP_REPORT__BLOCK_AVG_CYCLES:
fmt->entry = block_avg_cycles_entry;
--
2.17.1
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