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tests/pm_pc8: try to reuse FBs when possible

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Instead of creating a new FB every time we need one, create a cache of
FBs and reuse whenever possible. That means we'll create at most two
FBs, and reuse them hundreds and hundreds of times.

The kmstest_paint_test_pattern function takes about 1-2 seconds to
run, and we'll avoid it whenever we reuse the FB.

This makes the time taken to run the modeset-lpsp-stress subtest go
from 2:29 to 1:29.

A full "time ./pm_pc8 --quick" goes from 8:14 to 6:27.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
This commit is contained in:
Paulo Zanoni 2013-11-21 18:19:07 -02:00
parent 78227101e2
commit 0df88f5e64
1 changed files with 54 additions and 6 deletions
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60
tests/pm_pc8.c
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@ -84,6 +84,7 @@ enum screen_type {
int drm_fd, msr_fd, pm_status_fd, pc8_status_fd;
bool has_runtime_pm, has_pc8;
struct mode_set_data ms_data;
struct scanout_fb *fbs = NULL;
/* Stuff used when creating FBs and mode setting. */
struct mode_set_data {
@ -103,6 +104,15 @@ struct compare_data {
drmModePropertyBlobPtr edids[MAX_CONNECTORS];
};
/* During the stress tests we want to be as fast as possible, so use pre-created
* FBs instead of creating them again and again. */
struct scanout_fb {
uint32_t handle;
int width;
int height;
struct scanout_fb *next;
};
/* If the read fails, then the machine doesn't support PC8+ residencies. */
static bool supports_pc8_plus_residencies(void)
{
@ -249,17 +259,46 @@ static void disable_all_screens(struct mode_set_data *data)
}
}
static uint32_t create_fb(struct mode_set_data *data, int width, int height)
static struct scanout_fb *create_fb(struct mode_set_data *data, int width,
int height)
{
struct scanout_fb *fb_info;
struct kmstest_fb fb;
cairo_t *cr;
uint32_t buffer_id;
buffer_id = kmstest_create_fb(drm_fd, width, height, 32, 24, false,
&fb);
fb_info = malloc(sizeof(struct scanout_fb));
igt_assert(fb_info);
fb_info->handle = kmstest_create_fb(drm_fd, width, height, 32, 24,
false, &fb);
fb_info->width = width;
fb_info->height = height;
fb_info->next = NULL;
cr = kmstest_get_cairo_ctx(drm_fd, &fb);
kmstest_paint_test_pattern(cr, width, height);
return buffer_id;
return fb_info;
}
static uint32_t get_fb(struct mode_set_data *data, int width, int height)
{
struct scanout_fb *fb;
if (!fbs) {
fbs = create_fb(data, width, height);
return fbs->handle;
}
for (fb = fbs; fb != NULL; fb = fb->next) {
if (fb->width == width && fb->height == height)
return fb->handle;
if (!fb->next) {
fb->next = create_fb(data, width, height);
return fb->next->handle;
}
}
igt_assert(false);
}
static bool enable_one_screen_with_type(struct mode_set_data *data,
@ -291,7 +330,7 @@ static bool enable_one_screen_with_type(struct mode_set_data *data,
return false;
crtc_id = data->res->crtcs[0];
buffer_id = create_fb(data, mode->hdisplay, mode->vdisplay);
buffer_id = get_fb(data, mode->hdisplay, mode->vdisplay);
igt_assert(crtc_id);
igt_assert(buffer_id);
@ -724,6 +763,15 @@ static void setup_environment(void)
static void teardown_environment(void)
{
struct scanout_fb *fb, *fb_next;
fb = fbs;
while (fb) {
fb_next = fb->next;
free(fb);
fb = fb_next;
}
fini_mode_set_data(&ms_data);
drmClose(drm_fd);
close(msr_fd);