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authorChris Wilson <chris@chris-wilson.co.uk>2017-10-18 13:23:15 +0100
committerChris Wilson <chris@chris-wilson.co.uk>2017-10-19 09:07:11 +0100
commit78159ab1c1023587baf876c647325ae973c88f26 (patch)
treef4b17dc1987b8ca5ea8c6c6d48a8658e54a28d47 /lib
parent5a803d19c1c6bb0e6f49ceeb51affbbe425105bd (diff)
lib: Idle the GT when quiescing the GPU
As part of the general procedure for ensuring the GPU is idle, we also want to ask the driver to flush its idle_worker. The idle_worker is responsible for releasing both the driver's internal cache of buffers and cache of state (such as the prolonged GT wakeref). By flushing the idle_worker we ensure that each test (each caller needing an idle gpu) has a clean slate; not carrying over caches from one test to the next. Note this is a silent no-op for kernels that do not know about DROP_IDLE, old bugs will remain. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Diffstat (limited to 'lib')
-rw-r--r--lib/drmtest.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/drmtest.c b/lib/drmtest.c
index 8a07152c..15a46477 100644
--- a/lib/drmtest.c
+++ b/lib/drmtest.c
@@ -187,7 +187,7 @@ void gem_quiescent_gpu(int fd)
gem_sync(fd, obj.handle);
gem_close(fd, obj.handle);
- igt_drop_caches_set(fd, DROP_RETIRE | DROP_FREED);
+ igt_drop_caches_set(fd, DROP_RETIRE | DROP_IDLE | DROP_FREED);
}
/**