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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2018-08-07 16:40:55 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2018-08-08 17:01:57 +0100 |
| commit | e897d8d2c12f90025130a011561d2ee0155831d7 (patch) | |
| tree | 02800c8bade6714a92102b717c5763d2dc64ec13 /tests/prime_vgem.c | |
| parent | 9ec3471f6e4f5e51880713d4c03e801167d34d00 (diff) | |
igt/prime_vgem: Ask the shrinker to purge a vgem bo from inside i915
Link a vgem dmabuf into an i915 bo and then ask the i915 shrinker to
purge/invalidate its pages. This should establish the lockdep link from
the fs_reclaim shrinker section to whatever locks are used to
acquire/release dmabuf mappings; if any are required ofc.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Diffstat (limited to 'tests/prime_vgem.c')
| -rw-r--r-- | tests/prime_vgem.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/tests/prime_vgem.c b/tests/prime_vgem.c index d886044a..b821fbb8 100644 --- a/tests/prime_vgem.c +++ b/tests/prime_vgem.c @@ -237,6 +237,32 @@ static void test_gtt(int vgem, int i915) gem_close(vgem, scratch.handle); } +static void test_shrink(int vgem, int i915) +{ + struct vgem_bo scratch = { + .width = 1024, + .height = 1024, + .bpp = 32 + }; + int dmabuf; + + vgem_create(vgem, &scratch); + + dmabuf = prime_handle_to_fd(vgem, scratch.handle); + gem_close(vgem, scratch.handle); + + scratch.handle = prime_fd_to_handle(i915, dmabuf); + close(dmabuf); + + /* Populate the i915_bo->pages. */ + gem_set_domain(i915, scratch.handle, I915_GEM_DOMAIN_GTT, 0); + + /* Now evict them, establishing the link from i915:shrinker to vgem. */ + igt_drop_caches_set(i915, DROP_SHRINK_ALL); + + gem_close(i915, scratch.handle); +} + static bool is_coherent(int i915) { int val = 1; /* by default, we assume GTT is coherent, hence the test */ @@ -794,6 +820,9 @@ igt_main igt_subtest("basic-gtt") test_gtt(vgem, i915); + igt_subtest("shrink") + test_shrink(vgem, i915); + igt_subtest("coherency-gtt") test_gtt_interleaved(vgem, i915); |