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overlay: Include CPU usage in the overview chart

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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2013-08-18 15:56:22 +01:00
parent 98572f0446
commit 6a64ee938b
4 changed files with 85 additions and 3 deletions
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2
overlay/Makefile.am
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@ -12,6 +12,8 @@ intel_gpu_overlay_SOURCES = \
overlay.c \
chart.h \
chart.c \
cpu-top.h \
cpu-top.c \
gem-objects.h \
gem-objects.c \
gpu-top.h \

44
overlay/cpu-top.c Normal file
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@ -0,0 +1,44 @@
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include "cpu-top.h"
int cpu_top_update(struct cpu_top *cpu)
{
struct cpu_stat *s = &cpu->stat[cpu->count++&1];
struct cpu_stat *d = &cpu->stat[cpu->count&1];
uint64_t d_total, d_idle;
char buf[4096];
int fd, len = -1;
fd = open("/proc/stat", 0);
if (fd < 0)
return errno;
len = read(fd, buf, sizeof(buf)-1);
close(fd);
if (len < 0)
return EIO;
buf[len] = '\0';
#ifdef __x86_64__
sscanf(buf, "cpu %lu %lu %lu %lu",
&s->user, &s->nice, &s->sys, &s->idle);
#else
sscanf(buf, "cpu %llu %llu %llu %llu",
&s->user, &s->nice, &s->sys, &s->idle);
#endif
s->total = s->user + s->nice + s->sys + s->idle;
if (cpu->count == 1)
return EAGAIN;
d_total = s->total - d->total;
d_idle = s->idle - d->idle;
cpu->busy = 100 - 100 * d_idle / d_total;
return 0;
}

13
overlay/cpu-top.h Normal file
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@ -0,0 +1,13 @@
#include <stdint.h>
struct cpu_top {
uint8_t busy;
int count;
struct cpu_stat {
uint64_t user, nice, sys, idle;
uint64_t total;
} stat[2];
};
int cpu_top_update(struct cpu_top *cpu);

29
overlay/overlay.c
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@ -10,6 +10,7 @@
#include <errno.h>
#include "overlay.h"
#include "cpu-top.h"
#include "gpu-top.h"
#include "gpu-perf.h"
#include "gem-objects.h"
@ -59,8 +60,10 @@ struct overlay_context {
struct overlay_gpu_top {
struct gpu_top gpu_top;
struct cpu_top cpu_top;
struct chart busy[MAX_RINGS];
struct chart wait[MAX_RINGS];
struct chart cpu;
};
static void init_gpu_top(struct overlay_gpu_top *gt,
@ -75,6 +78,16 @@ static void init_gpu_top(struct overlay_gpu_top *gt,
int n;
gpu_top_init(&gt->gpu_top);
memset(&gt->cpu, 0, sizeof(gt->cpu));
chart_init(&gt->cpu, "CPU", 120);
chart_set_position(&gt->cpu, 12, 12);
chart_set_size(&gt->cpu,
cairo_image_surface_get_width(surface)-24,
100);
chart_set_stroke_rgba(&gt->cpu, 0.75, 0.25, 0.75, 1.);
chart_set_mode(&gt->cpu, CHART_STROKE);
chart_set_range(&gt->cpu, 0, 100);
for (n = 0; n < gt->gpu_top.num_rings; n++) {
chart_init(&gt->busy[n],
@ -107,9 +120,15 @@ static void init_gpu_top(struct overlay_gpu_top *gt,
static void show_gpu_top(struct overlay_context *ctx, struct overlay_gpu_top *gt)
{
int y, n, update;
int y, n, update, len;
char txt[160];
update = gpu_top_update(&gt->gpu_top);
if (update && cpu_top_update(&gt->cpu_top) == 0)
chart_add_sample(&gt->cpu, gt->cpu_top.busy);
chart_draw(&gt->cpu, ctx->cr);
for (n = 0; n < gt->gpu_top.num_rings; n++) {
if (update)
chart_add_sample(&gt->wait[n],
@ -126,10 +145,14 @@ static void show_gpu_top(struct overlay_context *ctx, struct overlay_gpu_top *gt
cairo_set_source_rgb(ctx->cr, 1, 1, 1);
y = 12;
cairo_set_source_rgba(ctx->cr, 0.75, 0.25, 0.75, 1.);
cairo_move_to(ctx->cr, 12, y);
sprintf(txt, "CPU: %d%% busy", gt->cpu_top.busy);
cairo_show_text(ctx->cr, txt);
y += 14;
for (n = 0; n < gt->gpu_top.num_rings; n++) {
struct chart *c =&gt->busy[n];
char txt[160];
int len;
len = sprintf(txt, "%s: %d%% busy",
gt->gpu_top.ring[n].name,