linux-kernel - [PATCH 4/7] perf hists: Handle field separator properly

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Date:	Mon, 20 Aug 2012 13:52:08 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Namhyung Kim <namhyung.kim@....com>,
	Stephane Eranian <eranian@...gle.com>
Subject: [PATCH 4/7] perf hists: Handle field separator properly

From: Namhyung Kim <namhyung.kim@....com>

When a field separator is given, the output format doesn't need to be
fancy like aligning to column length, coloring the percent value and
so on. And since there's a slight difference to normal format, fix it
not to break backward compatibility.

Cc: Stephane Eranian <eranian@...gle.com>
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/ui/hist.c       | 42 ++++++++++++++++++++++++++++++++++++++++--
 tools/perf/ui/stdio/hist.c |  3 ++-
 2 files changed, 42 insertions(+), 3 deletions(-)

diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index 8062b38f7971..29c787c93452 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -30,6 +30,10 @@ static int hpp_entry_overhead(struct hpp_context *ctx,
 			      struct hist_entry *he)
 {
 	double percent = 100.0 * he->period / ctx->total_period;
+
+	if (symbol_conf.field_sep)
+		return scnprintf(ctx->s, ctx->size, "%.2f", percent);
+
 	return scnprintf(ctx->s, ctx->size, "  %5.2f%%", percent);
 }
 
@@ -54,6 +58,10 @@ static int hpp_entry_overhead_sys(struct hpp_context *ctx,
 				  struct hist_entry *he)
 {
 	double percent = 100.0 * he->period_sys / ctx->total_period;
+
+	if (symbol_conf.field_sep)
+		return scnprintf(ctx->s, ctx->size, "%.2f", percent);
+
 	return scnprintf(ctx->s, ctx->size, "%5.2f%%", percent);
 }
 
@@ -78,6 +86,10 @@ static int hpp_entry_overhead_us(struct hpp_context *ctx,
 				 struct hist_entry *he)
 {
 	double percent = 100.0 * he->period_us / ctx->total_period;
+
+	if (symbol_conf.field_sep)
+		return scnprintf(ctx->s, ctx->size, "%.2f", percent);
+
 	return scnprintf(ctx->s, ctx->size, "%5.2f%%", percent);
 }
 
@@ -102,6 +114,10 @@ static int hpp_entry_overhead_guest_sys(struct hpp_context *ctx,
 					struct hist_entry *he)
 {
 	double percent = 100.0 * he->period_guest_sys / ctx->total_period;
+
+	if (symbol_conf.field_sep)
+		return scnprintf(ctx->s, ctx->size, "%.2f", percent);
+
 	return scnprintf(ctx->s, ctx->size, "  %5.2f%% ", percent);
 }
 
@@ -126,6 +142,10 @@ static int hpp_entry_overhead_guest_us(struct hpp_context *ctx,
 				       struct hist_entry *he)
 {
 	double percent = 100.0 * he->period_guest_us / ctx->total_period;
+
+	if (symbol_conf.field_sep)
+		return scnprintf(ctx->s, ctx->size, "%.2f", percent);
+
 	return scnprintf(ctx->s, ctx->size, "  %5.2f%% ", percent);
 }
 
@@ -142,6 +162,9 @@ static int hpp_width_samples(struct hpp_context *ctx __used)
 static int hpp_entry_samples(struct hpp_context *ctx,
 			     struct hist_entry *he)
 {
+	if (symbol_conf.field_sep)
+		return scnprintf(ctx->s, ctx->size, "%" PRIu64, he->nr_events);
+
 	return scnprintf(ctx->s, ctx->size, "%11" PRIu64, he->nr_events);
 }
 
@@ -158,6 +181,9 @@ static int hpp_width_period(struct hpp_context *ctx __used)
 static int hpp_entry_period(struct hpp_context *ctx,
 			    struct hist_entry *he)
 {
+	if (symbol_conf.field_sep)
+		return scnprintf(ctx->s, ctx->size, "%" PRIu64, he->period);
+
 	return scnprintf(ctx->s, ctx->size, "%12" PRIu64, he->period);
 }
 
@@ -189,10 +215,16 @@ static int hpp_entry_delta(struct hpp_context *ctx,
 		new_percent = 100.0 * he->period / new_total;
 
 	diff = new_percent - old_percent;
-	if (fabs(diff) < 0.01)
+	if (fabs(diff) < 0.01) {
+		if (symbol_conf.field_sep)
+			return scnprintf(ctx->s, ctx->size, " ");
 		return scnprintf(ctx->s, ctx->size, "       ");
+	}
 
 	scnprintf(buf, sizeof(buf), "%+4.2F%%", diff);
+
+	if (symbol_conf.field_sep)
+		scnprintf(ctx->s, ctx->size, "%s", buf);
 	return scnprintf(ctx->s, ctx->size, "%7.7s", buf);
 }
 
@@ -211,10 +243,16 @@ static int hpp_entry_displ(struct hpp_context *ctx,
 {
 	char buf[32];
 
-	if (!ctx->displacement)
+	if (!ctx->displacement) {
+		if (symbol_conf.field_sep)
+			return scnprintf(ctx->s, ctx->size, " ");
 		return scnprintf(ctx->s, ctx->size, "     ");
+	}
 
 	scnprintf(buf, sizeof(buf), "%+4ld", ctx->displacement);
+
+	if (symbol_conf.field_sep)
+		scnprintf(ctx->s, ctx->size, "%s", buf);
 	return scnprintf(ctx->s, ctx->size, "%6.6s", buf);
 }
 
diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index c040b03cc6f4..0712fb5c1bb7 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -319,11 +319,12 @@ static int hist_entry__fprintf(struct hist_entry *he, size_t size,
 		.displacement	= displacement,
 		.ptr		= pair_hists,
 	};
+	bool color = !symbol_conf.field_sep;
 
 	if (size == 0 || size > sizeof(bf))
 		size = ctx.size = sizeof(bf);
 
-	ret = hist_entry__period_snprintf(&ctx, he, true);
+	ret = hist_entry__period_snprintf(&ctx, he, color);
 	hist_entry__sort_snprintf(he, bf + ret, size - ret, hists);
 
 	ret = fprintf(fp, "%s\n", bf);
-- 
1.7.11.2

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