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tests/vgem_fb_test: Add verbose mode to vgem_fb_test to print mmap time

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This CL introduces -p option to vgem_fb_test. For now it only prints the
time to mmap imported vgem buffers, which is particularly useful to
benchmark and compare with other driver implementations.

Signed-off-by: Tiago Vignatti <tiago.vignatti@intel.com>
This commit is contained in:
Tiago Vignatti 2015-05-15 20:09:49 -03:00
parent 761800f1e3
commit 01ed12bd7e
1 changed files with 32 additions and 2 deletions
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34
tests/vgem_fb_test.c
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@ -14,6 +14,7 @@
#include <stdlib.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
@ -40,6 +41,8 @@ struct context {
};
static int enable_profiling = false;
void disable_psr() {
const char psr_path[] = "/sys/module/i915/parameters/enable_psr";
int psr_fd = open(psr_path, O_WRONLY);
@ -95,6 +98,11 @@ int drm_open_vgem()
return -1;
}
static double elapsed(const struct timeval *start, const struct timeval *end)
{
return 1e6*(end->tv_sec - start->tv_sec) + (end->tv_usec - start->tv_usec);
}
void * mmap_dumb_bo(int fd, int handle, size_t size)
{
struct drm_mode_map_dumb mmap_arg;
@ -258,11 +266,19 @@ void draw(struct context *ctx)
size_t bo_size = gbm_bo_get_stride(ctx->gbm_buffer[fb_idx]) * gbm_bo_get_height(ctx->gbm_buffer[fb_idx]);
uint32_t *bo_ptr;
volatile uint32_t *ptr;
struct timeval start, end;
for (sequence_subindex = 0; sequence_subindex < 4; sequence_subindex++) {
switch (sequences[sequence_index][sequence_subindex]) {
case STEP_MMAP:
if (enable_profiling)
gettimeofday(&start, NULL);
bo_ptr = mmap_dumb_bo(ctx->vgem_card_fd, ctx->vgem_bo_handle[fb_idx], bo_size);
if (enable_profiling) {
gettimeofday(&end, NULL);
fprintf(stderr, "time to execute mmap: %7.3fms\n",
elapsed(&start, &end) / 1000);
}
ptr = bo_ptr;
break;
@ -306,6 +322,8 @@ void draw(struct context *ctx)
}
}
static const char optstr[] = "d:p";
int main(int argc, char **argv)
{
int ret = 0;
@ -315,9 +333,21 @@ int main(int argc, char **argv)
int drm_prime_fd;
size_t i;
char *drm_card_path = "/dev/dri/card0";
char c;
if (argc >= 2)
drm_card_path = argv[1];
while ((c = getopt(argc, argv, optstr)) != -1) {
switch (c) {
case 'd':
drm_card_path = optarg;
break;
case 'p':
enable_profiling = true;
break;
default:
ret = 1;
goto fail;
}
}
do_fixes();