Commit 40e8e50a authored by Antonio Argenziano's avatar Antonio Argenziano Committed by Chris Wilson

tests/gem_exec_schedule: Add reset on failed preemption test.

This patch adds a test where a low priority batch is going to be
declared hung while a preemption is pending. The test wants to verify
that a 'hanging' low priority batch will not disrupt the execution of a high
priority context and that the driver does due diligence in managing a
reset while a preemption is pending.

-v2:
	- Use igt_hang_ctx to hang the engine (Chris)
	- Enable/Process engine reset using IGT libs (Chris)
	- Create new subtest_group for the test (Chris)

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michal Winiarski <michal.winiarski@intel.com>
Signed-off-by: Antonio Argenziano's avatarAntonio Argenziano <antonio.argenziano@intel.com>
Reviewed-by: Michał Winiarski's avatarMichał Winiarski <michal.winiarski@intel.com>
parent 37339e71
......@@ -356,13 +356,15 @@ static void promotion(int fd, unsigned ring)
munmap(ptr, 4096);
}
#define NEW_CTX 0x1
#define NEW_CTX (0x1 << 0)
#define HANG_LP (0x1 << 1)
static void preempt(int fd, unsigned ring, unsigned flags)
{
uint32_t result = gem_create(fd, 4096);
uint32_t *ptr = gem_mmap__gtt(fd, result, 4096, PROT_READ);
igt_spin_t *spin[16];
uint32_t ctx[2];
igt_hang_t hang;
ctx[LO] = gem_context_create(fd);
gem_context_set_priority(fd, ctx[LO], MIN_PRIO);
......@@ -370,6 +372,9 @@ static void preempt(int fd, unsigned ring, unsigned flags)
ctx[HI] = gem_context_create(fd);
gem_context_set_priority(fd, ctx[HI], MAX_PRIO);
if (flags & HANG_LP)
hang = igt_hang_ctx(fd, ctx[LO], ring, 0, NULL);
for (int n = 0; n < 16; n++) {
if (flags & NEW_CTX) {
gem_context_destroy(fd, ctx[LO]);
......@@ -389,6 +394,9 @@ static void preempt(int fd, unsigned ring, unsigned flags)
for (int n = 0; n < 16; n++)
igt_spin_batch_free(fd, spin[n]);
if (flags & HANG_LP)
igt_post_hang_ring(fd, hang);
gem_context_destroy(fd, ctx[LO]);
gem_context_destroy(fd, ctx[HI]);
......@@ -1023,6 +1031,24 @@ igt_main
igt_subtest_f("preempt-self-%s", e->name)
preempt_self(fd, e->exec_id | e->flags);
igt_subtest_group {
igt_hang_t hang;
igt_fixture {
igt_stop_hang_detector();
hang = igt_allow_hang(fd, 0, 0);
}
igt_subtest_f("preempt-hang-%s", e->name) {
preempt(fd, e->exec_id | e->flags, NEW_CTX | HANG_LP);
}
igt_fixture {
igt_disallow_hang(fd, hang);
igt_fork_hang_detector(fd);
}
}
}
igt_subtest_f("deep-%s", e->name)
......
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