Re: [igt-dev] [PATCH i-g-t] i915/gem_softpin: Replace constant loop with timeout

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On 05/10/2019 09:15, Chris Wilson wrote:
Rather than do a fixed amount of work that takes *forever*, run for a
fixed amount of time.

Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
  tests/i915/gem_softpin.c | 6 ++++--
  1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tests/i915/gem_softpin.c b/tests/i915/gem_softpin.c
index c29097ad3..032056c08 100644
--- a/tests/i915/gem_softpin.c
+++ b/tests/i915/gem_softpin.c
@@ -102,14 +102,14 @@ static void test_softpin(int fd)
  	struct drm_i915_gem_exec_object2 object;
  	uint64_t offset, end;
  	uint32_t last_handle;
-	int loop;
+	unsigned long count = 0;
last_handle = gem_create(fd, size); memset(&execbuf, 0, sizeof(execbuf));
  	execbuf.buffers_ptr = to_user_pointer(&object);
  	execbuf.buffer_count = 1;
-	for (loop = 0; loop < 1024; loop++) {
+	igt_until_timeout(30) {
  		memset(&object, 0, sizeof(object));
  		object.handle = gem_create(fd, 2*size);
  		gem_write(fd, object.handle, 0, &bbe, sizeof(bbe));
@@ -134,7 +134,9 @@ static void test_softpin(int fd)
  		}
last_handle = object.handle;
+		count++;
  	}
+	igt_info("Completd %lu cycles\n", count);
  }
static void test_overlap(int fd)


Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>

Regards,

Tvrtko
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