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linux-next/tools/perf/util/svghelper.c
Arnaldo Carvalho de Melo 2f5302533f perf svghelper: Fix unchecked usage of strncpy() 
The strncpy() function may leave the destination string buffer
unterminated, better use strlcpy() that we have a __weak fallback
implementation for systems without it.

In this specific case this would only happen if fgets() was buggy, as
its man page states that it should read one less byte than the size of
the destination buffer, so that it can put the nul byte at the end of
it, so it would never copy 255 non-nul chars, as fgets reads into the
orig buffer at most 254 non-nul chars and terminates it. But lets just
switch to strlcpy to keep the original intent and silence the gcc 8.2
warning.

This fixes this warning on an Alpine Linux Edge system with gcc 8.2:

  In function 'cpu_model',
      inlined from 'svg_cpu_box' at util/svghelper.c:378:2:
  util/svghelper.c:337:5: error: 'strncpy' output may be truncated copying 255 bytes from a string of length 255 [-Werror=stringop-truncation]
       strncpy(cpu_m, &buf[13], 255);
       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Fixes: f48d55ce78 ("perf: Add a SVG helper library file")
Link: https://lkml.kernel.org/n/tip-xzkoo0gyr56gej39ltivuh9g@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-12-17 14:59:20 -03:00

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/*
* svghelper.c - helper functions for outputting svg
*
* (C) Copyright 2009 Intel Corporation
*
* Authors:
* Arjan van de Ven <arjan@linux.intel.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; version 2
* of the License.
*/
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <linux/bitmap.h>
#include <linux/time64.h>
#include "perf.h"
#include "svghelper.h"
#include "util.h"
#include "cpumap.h"
static u64 first_time, last_time;
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;
const char *svg_highlight_name;
#define MIN_TEXT_SIZE 0.01
static u64 total_height;
static FILE *svgfile;
static double cpu2slot(int cpu)
{
return 2 * cpu + 1;
}
static int *topology_map;
static double cpu2y(int cpu)
{
if (topology_map)
return cpu2slot(topology_map[cpu]) * SLOT_MULT;
else
return cpu2slot(cpu) * SLOT_MULT;
}
static double time2pixels(u64 __time)
{
double X;
X = 1.0 * svg_page_width * (__time - first_time) / (last_time - first_time);
return X;
}
/*
* Round text sizes so that the svg viewer only needs a discrete
* number of renderings of the font
*/
static double round_text_size(double size)
{
int loop = 100;
double target = 10.0;
if (size >= 10.0)
return size;
while (loop--) {
if (size >= target)
return target;
target = target / 2.0;
}
return size;
}
void open_svg(const char *filename, int cpus, int rows, u64 start, u64 end)
{
int new_width;
svgfile = fopen(filename, "w");
if (!svgfile) {
fprintf(stderr, "Cannot open %s for output\n", filename);
return;
}
first_time = start;
first_time = first_time / 100000000 * 100000000;
last_time = end;
/*
* if the recording is short, we default to a width of 1000, but
* for longer recordings we want at least 200 units of width per second
*/
new_width = (last_time - first_time) / 5000000;
if (new_width > svg_page_width)
svg_page_width = new_width;
total_height = (1 + rows + cpu2slot(cpus)) * SLOT_MULT;
fprintf(svgfile, "<?xml version=\"1.0\" standalone=\"no\"?> \n");
fprintf(svgfile, "<!DOCTYPE svg SYSTEM \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n");
fprintf(svgfile, "<svg width=\"%i\" height=\"%" PRIu64 "\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">\n", svg_page_width, total_height);
fprintf(svgfile, "<defs>\n <style type=\"text/css\">\n <![CDATA[\n");
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");
fprintf(svgfile, " rect.cpu { fill:rgb(192,192,192); fill-opacity:0.2; stroke-width:0.5; stroke:rgb(128,128,128); } \n");
fprintf(svgfile, " rect.pstate { fill:rgb(128,128,128); fill-opacity:0.8; stroke-width:0; } \n");
fprintf(svgfile, " rect.c1 { fill:rgb(255,214,214); fill-opacity:0.5; stroke-width:0; } \n");
fprintf(svgfile, " rect.c2 { fill:rgb(255,172,172); fill-opacity:0.5; stroke-width:0; } \n");
fprintf(svgfile, " rect.c3 { fill:rgb(255,130,130); fill-opacity:0.5; stroke-width:0; } \n");
fprintf(svgfile, " rect.c4 { fill:rgb(255, 88, 88); fill-opacity:0.5; stroke-width:0; } \n");
fprintf(svgfile, " rect.c5 { fill:rgb(255, 44, 44); fill-opacity:0.5; stroke-width:0; } \n");
fprintf(svgfile, " rect.c6 { fill:rgb(255, 0, 0); fill-opacity:0.5; stroke-width:0; } \n");
fprintf(svgfile, " line.pstate { stroke:rgb(255,255, 0); stroke-opacity:0.8; stroke-width:2; } \n");
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)
return;
fprintf(svgfile, "<rect x=\"%.8f\" width=\"%.8f\" y=\"%.1f\" height=\"%.1f\" class=\"%s\"/>\n",
time2pixels(start), time2pixels(end)-time2pixels(start), Yslot * SLOT_MULT, SLOT_HEIGHT, type);
}
static char *time_to_string(u64 duration);
void svg_blocked(int Yslot, int cpu, u64 start, u64 end, const char *backtrace)
{
if (!svgfile)
return;
fprintf(svgfile, "<g>\n");
fprintf(svgfile, "<title>#%d blocked %s</title>\n", cpu,
time_to_string(end - start));
if (backtrace)
fprintf(svgfile, "<desc>Blocked on:\n%s</desc>\n", backtrace);
svg_box(Yslot, start, end, "blocked");
fprintf(svgfile, "</g>\n");
}
void svg_running(int Yslot, int cpu, u64 start, u64 end, const char *backtrace)
{
double text_size;
const char *type;
if (!svgfile)
return;
if (svg_highlight && end - start > svg_highlight)
type = "sample_hi";
else
type = "sample";
fprintf(svgfile, "<g>\n");
fprintf(svgfile, "<title>#%d running %s</title>\n",
cpu, time_to_string(end - start));
if (backtrace)
fprintf(svgfile, "<desc>Switched because:\n%s</desc>\n", backtrace);
fprintf(svgfile, "<rect x=\"%.8f\" width=\"%.8f\" y=\"%.1f\" height=\"%.1f\" class=\"%s\"/>\n",
time2pixels(start), time2pixels(end)-time2pixels(start), Yslot * SLOT_MULT, SLOT_HEIGHT,
type);
text_size = (time2pixels(end)-time2pixels(start));
if (cpu > 9)
text_size = text_size/2;
if (text_size > 1.25)
text_size = 1.25;
text_size = round_text_size(text_size);
if (text_size > MIN_TEXT_SIZE)
fprintf(svgfile, "<text x=\"%.8f\" y=\"%.8f\" font-size=\"%.8fpt\">%i</text>\n",
time2pixels(start), Yslot * SLOT_MULT + SLOT_HEIGHT - 1, text_size, cpu + 1);
fprintf(svgfile, "</g>\n");
}
static char *time_to_string(u64 duration)
{
static char text[80];
text[0] = 0;
if (duration < NSEC_PER_USEC) /* less than 1 usec */
return text;
if (duration < NSEC_PER_MSEC) { /* less than 1 msec */
sprintf(text, "%.1f us", duration / (double)NSEC_PER_USEC);
return text;
}
sprintf(text, "%.1f ms", duration / (double)NSEC_PER_MSEC);
return text;
}
void svg_waiting(int Yslot, int cpu, u64 start, u64 end, const char *backtrace)
{
char *text;
const char *style;
double font_size;
if (!svgfile)
return;
style = "waiting";
if (end-start > 10 * NSEC_PER_MSEC) /* 10 msec */
style = "WAITING";
text = time_to_string(end-start);
font_size = 1.0 * (time2pixels(end)-time2pixels(start));
if (font_size > 3)
font_size = 3;
font_size = round_text_size(font_size);
fprintf(svgfile, "<g transform=\"translate(%.8f,%.8f)\">\n", time2pixels(start), Yslot * SLOT_MULT);
fprintf(svgfile, "<title>#%d waiting %s</title>\n", cpu, time_to_string(end - start));
if (backtrace)
fprintf(svgfile, "<desc>Waiting on:\n%s</desc>\n", backtrace);
fprintf(svgfile, "<rect x=\"0\" width=\"%.8f\" y=\"0\" height=\"%.1f\" class=\"%s\"/>\n",
time2pixels(end)-time2pixels(start), SLOT_HEIGHT, style);
if (font_size > MIN_TEXT_SIZE)
fprintf(svgfile, "<text transform=\"rotate(90)\" font-size=\"%.8fpt\"> %s</text>\n",
font_size, text);
fprintf(svgfile, "</g>\n");
}
static char *cpu_model(void)
{
static char cpu_m[255];
char buf[256];
FILE *file;
cpu_m[0] = 0;
/* CPU type */
file = fopen("/proc/cpuinfo", "r");
if (file) {
while (fgets(buf, 255, file)) {
if (strstr(buf, "model name")) {
strlcpy(cpu_m, &buf[13], 255);
break;
}
}
fclose(file);
}
/* CPU type */
file = fopen("/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies", "r");
if (file) {
while (fgets(buf, 255, file)) {
unsigned int freq;
freq = strtoull(buf, NULL, 10);
if (freq > max_freq)
max_freq = freq;
}
fclose(file);
}
return cpu_m;
}
void svg_cpu_box(int cpu, u64 __max_freq, u64 __turbo_freq)
{
char cpu_string[80];
if (!svgfile)
return;
max_freq = __max_freq;
turbo_frequency = __turbo_freq;
fprintf(svgfile, "<g>\n");
fprintf(svgfile, "<rect x=\"%.8f\" width=\"%.8f\" y=\"%.1f\" height=\"%.1f\" class=\"cpu\"/>\n",
time2pixels(first_time),
time2pixels(last_time)-time2pixels(first_time),
cpu2y(cpu), SLOT_MULT+SLOT_HEIGHT);
sprintf(cpu_string, "CPU %i", (int)cpu);
fprintf(svgfile, "<text x=\"%.8f\" y=\"%.8f\">%s</text>\n",
10+time2pixels(first_time), cpu2y(cpu) + SLOT_HEIGHT/2, cpu_string);
fprintf(svgfile, "<text transform=\"translate(%.8f,%.8f)\" font-size=\"1.25pt\">%s</text>\n",
10+time2pixels(first_time), cpu2y(cpu) + SLOT_MULT + SLOT_HEIGHT - 4, cpu_model());
fprintf(svgfile, "</g>\n");
}
void svg_process(int cpu, u64 start, u64 end, int pid, const char *name, const char *backtrace)
{
double width;
const char *type;
if (!svgfile)
return;
if (svg_highlight && end - start >= svg_highlight)
type = "sample_hi";
else if (svg_highlight_name && strstr(name, svg_highlight_name))
type = "sample_hi";
else
type = "sample";
fprintf(svgfile, "<g transform=\"translate(%.8f,%.8f)\">\n", time2pixels(start), cpu2y(cpu));
fprintf(svgfile, "<title>%d %s running %s</title>\n", pid, name, time_to_string(end - start));
if (backtrace)
fprintf(svgfile, "<desc>Switched because:\n%s</desc>\n", backtrace);
fprintf(svgfile, "<rect x=\"0\" width=\"%.8f\" y=\"0\" height=\"%.1f\" class=\"%s\"/>\n",
time2pixels(end)-time2pixels(start), SLOT_MULT+SLOT_HEIGHT, type);
width = time2pixels(end)-time2pixels(start);
if (width > 6)
width = 6;
width = round_text_size(width);
if (width > MIN_TEXT_SIZE)
fprintf(svgfile, "<text transform=\"rotate(90)\" font-size=\"%.8fpt\">%s</text>\n",
width, name);
fprintf(svgfile, "</g>\n");
}
void svg_cstate(int cpu, u64 start, u64 end, int type)
{
double width;
char style[128];
if (!svgfile)
return;
fprintf(svgfile, "<g>\n");
if (type > 6)
type = 6;
sprintf(style, "c%i", type);
fprintf(svgfile, "<rect class=\"%s\" x=\"%.8f\" width=\"%.8f\" y=\"%.1f\" height=\"%.1f\"/>\n",
style,
time2pixels(start), time2pixels(end)-time2pixels(start),
cpu2y(cpu), SLOT_MULT+SLOT_HEIGHT);
width = (time2pixels(end)-time2pixels(start))/2.0;
if (width > 6)
width = 6;
width = round_text_size(width);
if (width > MIN_TEXT_SIZE)
fprintf(svgfile, "<text x=\"%.8f\" y=\"%.8f\" font-size=\"%.8fpt\">C%i</text>\n",
time2pixels(start), cpu2y(cpu)+width, width, type);
fprintf(svgfile, "</g>\n");
}
static char *HzToHuman(unsigned long hz)
{
static char buffer[1024];
unsigned long long Hz;
memset(buffer, 0, 1024);
Hz = hz;
/* default: just put the Number in */
sprintf(buffer, "%9lli", Hz);
if (Hz > 1000)
sprintf(buffer, " %6lli Mhz", (Hz+500)/1000);
if (Hz > 1500000)
sprintf(buffer, " %6.2f Ghz", (Hz+5000.0)/1000000);
if (Hz == turbo_frequency)
sprintf(buffer, "Turbo");
return buffer;
}
void svg_pstate(int cpu, u64 start, u64 end, u64 freq)
{
double height = 0;
if (!svgfile)
return;
fprintf(svgfile, "<g>\n");
if (max_freq)
height = freq * 1.0 / max_freq * (SLOT_HEIGHT + SLOT_MULT);
height = 1 + cpu2y(cpu) + SLOT_MULT + SLOT_HEIGHT - height;
fprintf(svgfile, "<line x1=\"%.8f\" x2=\"%.8f\" y1=\"%.1f\" y2=\"%.1f\" class=\"pstate\"/>\n",
time2pixels(start), time2pixels(end), height, height);
fprintf(svgfile, "<text x=\"%.8f\" y=\"%.8f\" font-size=\"0.25pt\">%s</text>\n",
time2pixels(start), height+0.9, HzToHuman(freq));
fprintf(svgfile, "</g>\n");
}
void svg_partial_wakeline(u64 start, int row1, char *desc1, int row2, char *desc2, const char *backtrace)
{
double height;
if (!svgfile)
return;
fprintf(svgfile, "<g>\n");
fprintf(svgfile, "<title>%s wakes up %s</title>\n",
desc1 ? desc1 : "?",
desc2 ? desc2 : "?");
if (backtrace)
fprintf(svgfile, "<desc>%s</desc>\n", backtrace);
if (row1 < row2) {
if (row1) {
fprintf(svgfile, "<line x1=\"%.8f\" y1=\"%.2f\" x2=\"%.8f\" y2=\"%.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
time2pixels(start), row1 * SLOT_MULT + SLOT_HEIGHT, time2pixels(start), row1 * SLOT_MULT + SLOT_HEIGHT + SLOT_MULT/32);
if (desc2)
fprintf(svgfile, "<g transform=\"translate(%.8f,%.8f)\"><text transform=\"rotate(90)\" font-size=\"0.02pt\">%s &gt;</text></g>\n",
time2pixels(start), row1 * SLOT_MULT + SLOT_HEIGHT + SLOT_HEIGHT/48, desc2);
}
if (row2) {
fprintf(svgfile, "<line x1=\"%.8f\" y1=\"%.2f\" x2=\"%.8f\" y2=\"%.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
time2pixels(start), row2 * SLOT_MULT - SLOT_MULT/32, time2pixels(start), row2 * SLOT_MULT);
if (desc1)
fprintf(svgfile, "<g transform=\"translate(%.8f,%.8f)\"><text transform=\"rotate(90)\" font-size=\"0.02pt\">%s &gt;</text></g>\n",
time2pixels(start), row2 * SLOT_MULT - SLOT_MULT/32, desc1);
}
} else {
if (row2) {
fprintf(svgfile, "<line x1=\"%.8f\" y1=\"%.2f\" x2=\"%.8f\" y2=\"%.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
time2pixels(start), row2 * SLOT_MULT + SLOT_HEIGHT, time2pixels(start), row2 * SLOT_MULT + SLOT_HEIGHT + SLOT_MULT/32);
if (desc1)
fprintf(svgfile, "<g transform=\"translate(%.8f,%.8f)\"><text transform=\"rotate(90)\" font-size=\"0.02pt\">%s &lt;</text></g>\n",
time2pixels(start), row2 * SLOT_MULT + SLOT_HEIGHT + SLOT_MULT/48, desc1);
}
if (row1) {
fprintf(svgfile, "<line x1=\"%.8f\" y1=\"%.2f\" x2=\"%.8f\" y2=\"%.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
time2pixels(start), row1 * SLOT_MULT - SLOT_MULT/32, time2pixels(start), row1 * SLOT_MULT);
if (desc2)
fprintf(svgfile, "<g transform=\"translate(%.8f,%.8f)\"><text transform=\"rotate(90)\" font-size=\"0.02pt\">%s &lt;</text></g>\n",
time2pixels(start), row1 * SLOT_MULT - SLOT_HEIGHT/32, desc2);
}
}
height = row1 * SLOT_MULT;
if (row2 > row1)
height += SLOT_HEIGHT;
if (row1)
fprintf(svgfile, "<circle cx=\"%.8f\" cy=\"%.2f\" r = \"0.01\" style=\"fill:rgb(32,255,32)\"/>\n",
time2pixels(start), height);
fprintf(svgfile, "</g>\n");
}
void svg_wakeline(u64 start, int row1, int row2, const char *backtrace)
{
double height;
if (!svgfile)
return;
fprintf(svgfile, "<g>\n");
if (backtrace)
fprintf(svgfile, "<desc>%s</desc>\n", backtrace);
if (row1 < row2)
fprintf(svgfile, "<line x1=\"%.8f\" y1=\"%.2f\" x2=\"%.8f\" y2=\"%.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
time2pixels(start), row1 * SLOT_MULT + SLOT_HEIGHT, time2pixels(start), row2 * SLOT_MULT);
else
fprintf(svgfile, "<line x1=\"%.8f\" y1=\"%.2f\" x2=\"%.8f\" y2=\"%.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
time2pixels(start), row2 * SLOT_MULT + SLOT_HEIGHT, time2pixels(start), row1 * SLOT_MULT);
height = row1 * SLOT_MULT;
if (row2 > row1)
height += SLOT_HEIGHT;
fprintf(svgfile, "<circle cx=\"%.8f\" cy=\"%.2f\" r = \"0.01\" style=\"fill:rgb(32,255,32)\"/>\n",
time2pixels(start), height);
fprintf(svgfile, "</g>\n");
}
void svg_interrupt(u64 start, int row, const char *backtrace)
{
if (!svgfile)
return;
fprintf(svgfile, "<g>\n");
fprintf(svgfile, "<title>Wakeup from interrupt</title>\n");
if (backtrace)
fprintf(svgfile, "<desc>%s</desc>\n", backtrace);
fprintf(svgfile, "<circle cx=\"%.8f\" cy=\"%.2f\" r = \"0.01\" style=\"fill:rgb(255,128,128)\"/>\n",
time2pixels(start), row * SLOT_MULT);
fprintf(svgfile, "<circle cx=\"%.8f\" cy=\"%.2f\" r = \"0.01\" style=\"fill:rgb(255,128,128)\"/>\n",
time2pixels(start), row * SLOT_MULT + SLOT_HEIGHT);
fprintf(svgfile, "</g>\n");
}
void svg_text(int Yslot, u64 start, const char *text)
{
if (!svgfile)
return;
fprintf(svgfile, "<text x=\"%.8f\" y=\"%.8f\">%s</text>\n",
time2pixels(start), Yslot * SLOT_MULT+SLOT_HEIGHT/2, text);
}
static void svg_legenda_box(int X, const char *text, const char *style)
{
double boxsize;
boxsize = SLOT_HEIGHT / 2;
fprintf(svgfile, "<rect x=\"%i\" width=\"%.8f\" y=\"0\" height=\"%.1f\" class=\"%s\"/>\n",
X, boxsize, boxsize, style);
fprintf(svgfile, "<text transform=\"translate(%.8f, %.8f)\" font-size=\"%.8fpt\">%s</text>\n",
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)
return;
fprintf(svgfile, "<g>\n");
svg_legenda_box(0, "Running", "sample");
svg_legenda_box(100, "Idle","c1");
svg_legenda_box(200, "Deeper Idle", "c3");
svg_legenda_box(350, "Deepest Idle", "c6");
svg_legenda_box(550, "Sleeping", "process2");
svg_legenda_box(650, "Waiting for cpu", "waiting");
svg_legenda_box(800, "Blocked on IO", "blocked");
fprintf(svgfile, "</g>\n");
}
void svg_time_grid(double min_thickness)
{
u64 i;
if (!svgfile)
return;
i = first_time;
while (i < last_time) {
int color = 220;
double thickness = 0.075;
if ((i % 100000000) == 0) {
thickness = 0.5;
color = 192;
}
if ((i % 1000000000) == 0) {
thickness = 2.0;
color = 128;
}
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;
}
}
void svg_close(void)
{
if (svgfile) {
fprintf(svgfile, "</svg>\n");
fclose(svgfile);
svgfile = NULL;
}
}
#define cpumask_bits(maskp) ((maskp)->bits)
typedef struct { DECLARE_BITMAP(bits, MAX_NR_CPUS); } cpumask_t;
struct topology {
cpumask_t *sib_core;
int sib_core_nr;
cpumask_t *sib_thr;
int sib_thr_nr;
};
static void scan_thread_topology(int *map, struct topology *t, int cpu, int *pos)
{
int i;
int thr;
for (i = 0; i < t->sib_thr_nr; i++) {
if (!test_bit(cpu, cpumask_bits(&t->sib_thr[i])))
continue;
for_each_set_bit(thr,
cpumask_bits(&t->sib_thr[i]),
MAX_NR_CPUS)
if (map[thr] == -1)
map[thr] = (*pos)++;
}
}
static void scan_core_topology(int *map, struct topology *t)
{
int pos = 0;
int i;
int cpu;
for (i = 0; i < t->sib_core_nr; i++)
for_each_set_bit(cpu,
cpumask_bits(&t->sib_core[i]),
MAX_NR_CPUS)
scan_thread_topology(map, t, cpu, &pos);
}
static int str_to_bitmap(char *s, cpumask_t *b)
{
int i;
int ret = 0;
struct cpu_map *m;
int c;
m = cpu_map__new(s);
if (!m)
return -1;
for (i = 0; i < m->nr; i++) {
c = m->map[i];
if (c >= MAX_NR_CPUS) {
ret = -1;
break;
}
set_bit(c, cpumask_bits(b));
}
cpu_map__put(m);
return ret;
}
int svg_build_topology_map(char *sib_core, int sib_core_nr,
char *sib_thr, int sib_thr_nr)
{
int i;
struct topology t;
t.sib_core_nr = sib_core_nr;
t.sib_thr_nr = sib_thr_nr;
t.sib_core = calloc(sib_core_nr, sizeof(cpumask_t));
t.sib_thr = calloc(sib_thr_nr, sizeof(cpumask_t));
if (!t.sib_core || !t.sib_thr) {
fprintf(stderr, "topology: no memory\n");
goto exit;
}
for (i = 0; i < sib_core_nr; i++) {
if (str_to_bitmap(sib_core, &t.sib_core[i])) {
fprintf(stderr, "topology: can't parse siblings map\n");
goto exit;
}
sib_core += strlen(sib_core) + 1;
}
for (i = 0; i < sib_thr_nr; i++) {
if (str_to_bitmap(sib_thr, &t.sib_thr[i])) {
fprintf(stderr, "topology: can't parse siblings map\n");
goto exit;
}
sib_thr += strlen(sib_thr) + 1;
}
topology_map = malloc(sizeof(int) * MAX_NR_CPUS);
if (!topology_map) {
fprintf(stderr, "topology: no memory\n");
goto exit;
}
for (i = 0; i < MAX_NR_CPUS; i++)
topology_map[i] = -1;
scan_core_topology(topology_map, &t);
return 0;
exit:
zfree(&t.sib_core);
zfree(&t.sib_thr);
return -1;
}
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