[igt-dev] [PATCH igt] igt/gem_ppgtt: Flush the driver to idle before counting leaks

[Tvrtko Ursulin]

On 19/04/2018 06:48, Chris Wilson wrote:
> I have a cunning plan to make the vma open/close lazy to cache frequent
> reallocations (as buffers are passed between applications, e.g. DRI).
> However, this will mean that we will not be immediately closing vma and
> so need to tell the kernel to process the idle handlers before checking
> for leaks.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> ---
>   tests/gem_ppgtt.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/tests/gem_ppgtt.c b/tests/gem_ppgtt.c
> index bed95db83..575b0e9d3 100644
> --- a/tests/gem_ppgtt.c
> +++ b/tests/gem_ppgtt.c
> @@ -236,7 +236,7 @@ static void flink_and_close(void)
>   	gem_sync(fd2, flinked_bo);
>   	gem_close(fd2, flinked_bo);
>   
> -	igt_drop_caches_set(fd, DROP_RETIRE);
> +	igt_drop_caches_set(fd, DROP_RETIRE | DROP_IDLE);
>   
>   	/* the flinked bo VMA should have been cleared now, so a new bo of the
>   	 * same size should get the same offset
> @@ -286,7 +286,7 @@ static void flink_and_exit(void)
>   	exec_and_get_offset(fd3, gem_create(fd3, 4096));
>   	close(fd3);
>   
> -	igt_drop_caches_set(fd, DROP_ACTIVE | DROP_RETIRE);
> +	igt_drop_caches_set(fd, DROP_ACTIVE | DROP_RETIRE | DROP_IDLE);
>   	igt_assert(!igt_debugfs_search(fd, "i915_gem_gtt", match));
>   
>   	close(fd);
> 

It's not interfering with test intentions so:

Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

Regards,

Tvrtko