Commit 8f5d5416 authored by Daniel Vetter's avatar Daniel Vetter

tests/gem_evict_everything: add swapping and forked subtests

Much better at hitting the list corruption here on my machines
than what we have thus far.

Note that somehow I just can't reproduce the bug any more. No idea
why. But I guess it's time to simply push this pile out.

v2: Limit threads and rounds to something reasonable.

v3: Use igt_permute_array to avoid EINVAL due to duplicated bo.

v4:
- Add a variant of the forked tests with multiple drm fds.
- Tune the swapped forked tests a bit to complete in a reasonable
  amount of time.

v5: Add some memory pressure from the cpu by using cpu mmaps (which
directly hit shmem, so bypass gem completely).
Signed-off-by: Daniel Vetter's avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 5fe116e9
......@@ -118,6 +118,134 @@ copy(int fd, uint32_t dst, uint32_t src, uint32_t *all_bo, int n_bo, int error)
free(obj);
}
static void exchange_uint32_t(void *array, unsigned i, unsigned j)
{
uint32_t *i_arr = array;
uint32_t i_tmp;
i_tmp = i_arr[i];
i_arr[i] = i_arr[j];
i_arr[j] = i_tmp;
}
#define min(a, b) ((a) < (b) ? (a) : (b))
#define INTERRUPTIBLE (1 << 0)
#define SWAPPING (1 << 1)
#define DUP_DRMFD (1 << 2)
#define MEMORY_PRESSURE (1 << 3)
#define ALL_FLAGS (INTERRUPTIBLE | SWAPPING | DUP_DRMFD | MEMORY_PRESSURE)
static void forked_evictions(int fd, int size, int count,
unsigned flags)
{
uint32_t *bo;
int n, pass, l;
int num_threads = sysconf(_SC_NPROCESSORS_ONLN);
int bo_count;
igt_require((uint64_t)count * size / (1024 * 1024) < intel_get_total_ram_mb() * 9 / 10);
if (flags & SWAPPING) {
igt_require(intel_get_total_ram_mb() / 4 < intel_get_total_swap_mb());
bo_count = intel_get_total_ram_mb() * 11 / 10;
if (bo_count < count)
bo_count = count;
} else
bo_count = count;
bo = malloc(bo_count*sizeof(*bo));
igt_assert(bo);
for (n = 0; n < bo_count; n++)
bo[n] = gem_create(fd, size);
igt_fork(i, min(count, num_threads * 4)) {
int realfd = fd;
int num_passes = flags & SWAPPING ? 10 : 100;
/* Every fork should have a different permutation! */
srand(i * 63);
if (flags & INTERRUPTIBLE)
igt_fork_signal_helper();
igt_permute_array(bo, bo_count, exchange_uint32_t);
if (flags & DUP_DRMFD) {
realfd = drm_open_any();
/* We can overwrite the bo array since we're forked. */
for (l = 0; l < count; l++) {
uint32_t flink;
flink = gem_flink(fd, bo[l]);
bo[l] = gem_open(realfd, flink);
}
}
for (pass = 0; pass < num_passes; pass++) {
copy(realfd, bo[0], bo[1], bo, count, 0);
for (l = 0; l < count && (flags & MEMORY_PRESSURE); l++) {
uint32_t *base = gem_mmap__cpu(realfd, bo[l],
size,
PROT_READ | PROT_WRITE);
memset(base, 0, size);
munmap(base, size);
}
}
if (flags & INTERRUPTIBLE)
igt_stop_signal_helper();
/* drmfd closing will take care of additional bo refs */
if (flags & DUP_DRMFD)
close(realfd);
}
igt_waitchildren();
for (n = 0; n < bo_count; n++)
gem_close(fd, bo[n]);
free(bo);
}
static void swapping_evictions(int fd, int size, int count)
{
uint32_t *bo;
int i, n, pass;
int bo_count;
igt_require((uint64_t)count * size / (1024 * 1024) < intel_get_total_ram_mb() * 9 / 10);
igt_require(intel_get_total_ram_mb() / 4 < intel_get_total_swap_mb());
bo_count = intel_get_total_ram_mb() * 11 / 10;
if (bo_count < count)
bo_count = count;
bo = malloc(bo_count*sizeof(*bo));
igt_assert(bo);
for (n = 0; n < bo_count; n++)
bo[n] = gem_create(fd, size);
for (i = 0; i < bo_count/32; i++) {
igt_permute_array(bo, bo_count, exchange_uint32_t);
for (pass = 0; pass < 100; pass++) {
copy(fd, bo[0], bo[1], bo, count, 0);
}
}
for (n = 0; n < bo_count; n++)
gem_close(fd, bo[n]);
free(bo);
}
static void minor_evictions(int fd, int size, int count)
{
uint32_t *bo, *sel;
......@@ -169,38 +297,58 @@ static void major_evictions(int fd, int size, int count)
free(bo);
}
int fd;
int main(int argc, char **argv)
{
int size, count;
int size, count, fd;
size = count = 0;
fd = -1;
igt_subtest_init(argc, argv);
igt_skip_on_simulation();
igt_fixture
igt_fixture {
fd = drm_open_any();
igt_subtest("minor-normal") {
size = 1024 * 1024;
count = 3*gem_aperture_size(fd) / size / 4;
minor_evictions(fd, size, count);
}
for (unsigned flags = 0; flags < ALL_FLAGS + 1; flags++) {
igt_subtest_f("forked%s%s%s-%s",
flags & SWAPPING ? "-swapping" : "",
flags & DUP_DRMFD ? "-multifd" : "",
flags & MEMORY_PRESSURE ? "-mempressure" : "",
flags & INTERRUPTIBLE ? "interruptible" : "normal") {
forked_evictions(fd, size, count, flags);
}
}
igt_subtest("swapping-normal")
swapping_evictions(fd, size, count);
igt_subtest("minor-normal")
minor_evictions(fd, size, count);
igt_subtest("major-normal") {
size = 3*gem_aperture_size(fd) / 4;
count = 4;
major_evictions(fd, size, count);
}
igt_fork_signal_helper();
igt_subtest("minor-interruptible") {
igt_fixture {
size = 1024 * 1024;
count = 3*gem_aperture_size(fd) / size / 4;
minor_evictions(fd, size, count);
}
igt_fork_signal_helper();
igt_subtest("swapping-interruptible")
swapping_evictions(fd, size, count);
igt_subtest("minor-interruptible")
minor_evictions(fd, size, count);
igt_subtest("major-interruptible") {
size = 3*gem_aperture_size(fd) / 4;
count = 4;
......
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