perf timechart: Implement IO mode

Currently, timechart records only scheduler and CPU events (task switches,
running times, CPU power states, etc); this commit adds IO mode which
makes it possible to record IO (disk, network) activity. In this mode
perf timechart will generate SVG with IO charts (writes, reads, tx, rx, polls).

Signed-off-by: Stanislav Fomichev <stfomichev@yandex-team.ru>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/n/1404835423-23098-3-git-send-email-stfomichev@yandex-team.ru
Signed-off-by: Jiri Olsa <jolsa@kernel.org>

2 files changed, 100 insertions, 4 deletions

diff --git a/tools/perf/util/svghelper.c b/tools/perf/util/svghelper.c
index 27caf0f45469..283d3e73e2f2 100644
--- a/tools/perf/util/svghelper.c
+++ b/tools/perf/util/svghelper.c
@@ -30,6 +30,7 @@ static u64 turbo_frequency, max_freq;
 
 #define SLOT_MULT 30.0
 #define SLOT_HEIGHT 25.0
+#define SLOT_HALF (SLOT_HEIGHT / 2)
 
 int svg_page_width = 1000;
 u64 svg_highlight;
@@ -114,8 +115,14 @@ void open_svg(const char *filename, int cpus, int rows, u64 start, u64 end)
 	fprintf(svgfile, "      rect          { stroke-width: 1; }\n");
 	fprintf(svgfile, "      rect.process  { fill:rgb(180,180,180); fill-opacity:0.9; stroke-width:1;   stroke:rgb(  0,  0,  0); } \n");
 	fprintf(svgfile, "      rect.process2 { fill:rgb(180,180,180); fill-opacity:0.9; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
+	fprintf(svgfile, "      rect.process3 { fill:rgb(180,180,180); fill-opacity:0.5; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
 	fprintf(svgfile, "      rect.sample   { fill:rgb(  0,  0,255); fill-opacity:0.8; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
 	fprintf(svgfile, "      rect.sample_hi{ fill:rgb(255,128,  0); fill-opacity:0.8; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
+	fprintf(svgfile, "      rect.error    { fill:rgb(255,  0,  0); fill-opacity:0.5; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
+	fprintf(svgfile, "      rect.net      { fill:rgb(  0,128,  0); fill-opacity:0.5; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
+	fprintf(svgfile, "      rect.disk     { fill:rgb(  0,  0,255); fill-opacity:0.5; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
+	fprintf(svgfile, "      rect.sync     { fill:rgb(128,128,  0); fill-opacity:0.5; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
+	fprintf(svgfile, "      rect.poll     { fill:rgb(  0,128,128); fill-opacity:0.2; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
 	fprintf(svgfile, "      rect.blocked  { fill:rgb(255,  0,  0); fill-opacity:0.5; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
 	fprintf(svgfile, "      rect.waiting  { fill:rgb(224,214,  0); fill-opacity:0.8; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
 	fprintf(svgfile, "      rect.WAITING  { fill:rgb(255,214, 48); fill-opacity:0.6; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
@@ -132,6 +139,75 @@ void open_svg(const char *filename, int cpus, int rows, u64 start, u64 end)
 	fprintf(svgfile, "    ]]>\n   </style>\n</defs>\n");
 }
 
+static double normalize_height(double height)
+{
+	if (height < 0.25)
+		return 0.25;
+	else if (height < 0.50)
+		return 0.50;
+	else if (height < 0.75)
+		return 0.75;
+	else
+		return 0.100;
+}
+
+void svg_ubox(int Yslot, u64 start, u64 end, double height, const char *type, int fd, int err, int merges)
+{
+	double w = time2pixels(end) - time2pixels(start);
+	height = normalize_height(height);
+
+	if (!svgfile)
+		return;
+
+	fprintf(svgfile, "<g>\n");
+	fprintf(svgfile, "<title>fd=%d error=%d merges=%d</title>\n", fd, err, merges);
+	fprintf(svgfile, "<rect x=\"%.8f\" width=\"%.8f\" y=\"%.1f\" height=\"%.1f\" class=\"%s\"/>\n",
+		time2pixels(start),
+		w,
+		Yslot * SLOT_MULT,
+		SLOT_HALF * height,
+		type);
+	fprintf(svgfile, "</g>\n");
+}
+
+void svg_lbox(int Yslot, u64 start, u64 end, double height, const char *type, int fd, int err, int merges)
+{
+	double w = time2pixels(end) - time2pixels(start);
+	height = normalize_height(height);
+
+	if (!svgfile)
+		return;
+
+	fprintf(svgfile, "<g>\n");
+	fprintf(svgfile, "<title>fd=%d error=%d merges=%d</title>\n", fd, err, merges);
+	fprintf(svgfile, "<rect x=\"%.8f\" width=\"%.8f\" y=\"%.1f\" height=\"%.1f\" class=\"%s\"/>\n",
+		time2pixels(start),
+		w,
+		Yslot * SLOT_MULT + SLOT_HEIGHT - SLOT_HALF * height,
+		SLOT_HALF * height,
+		type);
+	fprintf(svgfile, "</g>\n");
+}
+
+void svg_fbox(int Yslot, u64 start, u64 end, double height, const char *type, int fd, int err, int merges)
+{
+	double w = time2pixels(end) - time2pixels(start);
+	height = normalize_height(height);
+
+	if (!svgfile)
+		return;
+
+	fprintf(svgfile, "<g>\n");
+	fprintf(svgfile, "<title>fd=%d error=%d merges=%d</title>\n", fd, err, merges);
+	fprintf(svgfile, "<rect x=\"%.8f\" width=\"%.8f\" y=\"%.1f\" height=\"%.1f\" class=\"%s\"/>\n",
+		time2pixels(start),
+		w,
+		Yslot * SLOT_MULT + SLOT_HEIGHT - SLOT_HEIGHT * height,
+		SLOT_HEIGHT * height,
+		type);
+	fprintf(svgfile, "</g>\n");
+}
+
 void svg_box(int Yslot, u64 start, u64 end, const char *type)
 {
 	if (!svgfile)
@@ -543,6 +619,20 @@ static void svg_legenda_box(int X, const char *text, const char *style)
 		X + boxsize + 5, boxsize, 0.8 * boxsize, text);
 }
 
+void svg_io_legenda(void)
+{
+	if (!svgfile)
+		return;
+
+	fprintf(svgfile, "<g>\n");
+	svg_legenda_box(0,	"Disk", "disk");
+	svg_legenda_box(100,	"Network", "net");
+	svg_legenda_box(200,	"Sync", "sync");
+	svg_legenda_box(300,	"Poll", "poll");
+	svg_legenda_box(400,	"Error", "error");
+	fprintf(svgfile, "</g>\n");
+}
+
 void svg_legenda(void)
 {
 	if (!svgfile)
@@ -559,7 +649,7 @@ void svg_legenda(void)
 	fprintf(svgfile, "</g>\n");
 }
 
-void svg_time_grid(void)
+void svg_time_grid(double min_thickness)
 {
 	u64 i;
 
@@ -579,8 +669,10 @@ void svg_time_grid(void)
 			color = 128;
 		}
 
-		fprintf(svgfile, "<line x1=\"%.8f\" y1=\"%.2f\" x2=\"%.8f\" y2=\"%" PRIu64 "\" style=\"stroke:rgb(%i,%i,%i);stroke-width:%.3f\"/>\n",
-			time2pixels(i), SLOT_MULT/2, time2pixels(i), total_height, color, color, color, thickness);
+		if (thickness >= min_thickness)
+			fprintf(svgfile, "<line x1=\"%.8f\" y1=\"%.2f\" x2=\"%.8f\" y2=\"%" PRIu64 "\" style=\"stroke:rgb(%i,%i,%i);stroke-width:%.3f\"/>\n",
+				time2pixels(i), SLOT_MULT/2, time2pixels(i),
+				total_height, color, color, color, thickness);
 
 		i += 10000000;
 	}
diff --git a/tools/perf/util/svghelper.h b/tools/perf/util/svghelper.h
index e3aff5332e30..9292a5291445 100644
--- a/tools/perf/util/svghelper.h
+++ b/tools/perf/util/svghelper.h
@@ -4,6 +4,9 @@
 #include <linux/types.h>
 
 extern void open_svg(const char *filename, int cpus, int rows, u64 start, u64 end);
+extern void svg_ubox(int Yslot, u64 start, u64 end, double height, const char *type, int fd, int err, int merges);
+extern void svg_lbox(int Yslot, u64 start, u64 end, double height, const char *type, int fd, int err, int merges);
+extern void svg_fbox(int Yslot, u64 start, u64 end, double height, const char *type, int fd, int err, int merges);
 extern void svg_box(int Yslot, u64 start, u64 end, const char *type);
 extern void svg_blocked(int Yslot, int cpu, u64 start, u64 end, const char *backtrace);
 extern void svg_running(int Yslot, int cpu, u64 start, u64 end, const char *backtrace);
@@ -16,7 +19,8 @@ extern void svg_cstate(int cpu, u64 start, u64 end, int type);
 extern void svg_pstate(int cpu, u64 start, u64 end, u64 freq);
 
 
-extern void svg_time_grid(void);
+extern void svg_time_grid(double min_thickness);
+extern void svg_io_legenda(void);
 extern void svg_legenda(void);
 extern void svg_wakeline(u64 start, int row1, int row2, const char *backtrace);
 extern void svg_partial_wakeline(u64 start, int row1, char *desc1, int row2, char *desc2, const char *backtrace);