From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Add a subtest to make sure the kernel doesn't leak the vma
pin_count for the last context on reset.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
tests/gem_ctx_exec.c | 30 +++++++++++++++++++++++++++++-
1 file changed, 29 insertions(+), 1 deletion(-)
diff --git a/tests/gem_ctx_exec.c b/tests/gem_ctx_exec.c
index da49a2f..da7412c 100644
--- a/tests/gem_ctx_exec.c
+++ b/tests/gem_ctx_exec.c
@@ -46,6 +46,7 @@
#include "ioctl_wrappers.h"
#include "drmtest.h"
#include "igt_aux.h"
+#include "igt_debugfs.h"
struct local_drm_i915_gem_context_destroy {
__u32 ctx_id;
@@ -92,7 +93,6 @@ static int exec(int fd, uint32_t handle, int ring, int ctx_id)
ret = drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2,
&execbuf);
- gem_sync(fd, handle);
return ret;
}
@@ -188,15 +188,43 @@ igt_main
igt_subtest("basic") {
ctx_id = gem_context_create(fd);
igt_assert(exec(fd, handle, I915_EXEC_RENDER, ctx_id) == 0);
+ gem_sync(fd, handle);
context_destroy(fd, ctx_id);
ctx_id = gem_context_create(fd);
igt_assert(exec(fd, handle, I915_EXEC_RENDER, ctx_id) == 0);
+ gem_sync(fd, handle);
context_destroy(fd, ctx_id);
igt_assert(exec(fd, handle, I915_EXEC_RENDER, ctx_id) < 0);
+ gem_sync(fd, handle);
}
igt_subtest("eviction")
big_exec(fd, handle, I915_EXEC_RENDER);
+
+ igt_subtest("reset-pin-leak") {
+ int i;
+
+ /*
+ * Use an explicit context to isolate the test from
+ * any major code changes related to the per-file
+ * default context (eg. if they would be eliminated).
+ */
+ ctx_id = gem_context_create(fd);
+
+ /*
+ * Iterate enough times that the kernel will
+ * become unhappy if the ggtt pin count for
+ * the last context is leaked at every reset.
+ */
+ for (i = 0; i < 20; i++) {
+ igt_set_stop_rings(STOP_RING_DEFAULTS);
+ igt_assert(exec(fd, handle, I915_EXEC_RENDER, 0) == 0);
+ igt_assert(exec(fd, handle, I915_EXEC_RENDER, ctx_id) == 0);
+ gem_sync(fd, handle);
+ }
+
+ context_destroy(fd, ctx_id);
+ }
}
--
1.8.5.5
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