To actually DROP_IDLE means that we have to wait for ongoing submission,
and any new concurrently submitted, i.e. it should only be called during
single-threaded submission to ensure the GPU is idle before the new
action.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
tests/i915/gem_persistent_relocs.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/tests/i915/gem_persistent_relocs.c b/tests/i915/gem_persistent_relocs.c
index 452fe686e..14b86e11d 100644
--- a/tests/i915/gem_persistent_relocs.c
+++ b/tests/i915/gem_persistent_relocs.c
@@ -281,10 +281,13 @@ static void do_forked_test(int fd, unsigned flags)
struct igt_helper_process thrasher = {};
if (flags & (THRASH | THRASH_INACTIVE)) {
- uint64_t val = (flags & THRASH_INACTIVE) ?
- (DROP_RETIRE | DROP_BOUND | DROP_UNBOUND) : DROP_ALL;
-
igt_fork_helper(&thrasher) {
+ uint64_t val;
+
+ val = DROP_RETIRE | DROP_BOUND | DROP_UNBOUND;
+ if (!(flags & THRASH_INACTIVE))
+ val |= DROP_ACTIVE;
+
while (1) {
usleep(1000);
igt_drop_caches_set(fd, val);
--
2.23.0.rc1
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