Re: [PATCH] intel-gpu-tools: skip gem_mmap_offset_exhaustion on Android

[Daniel Vetter <daniel@ffwll.ch>]

On Fri, Jul 25, 2014 at 10:00:19AM +0100, tim.gore@intel.com wrote:
> From: Tim Gore <tim.gore@intel.com>
> 
> gem_mmap_offset_exhaustion relies on purgeable memory
> allocations getting swapped out, freeing up physical
> memory for further allocations. On Android we have no
> swap partition so this cannot happen and the test gets
> killed by the low memory killer before mmap offset
> exhaustion can happen, thus defeating the tests purpose.
> 
> Signed-off-by: Tim Gore <tim.gore@intel.com>



	/* we happily leak objects to exhaust mmap offset space, the kernel will
	 * reap backing storage. */
	gem_madvise(fd, handle, I915_MADV_DONTNEED);

There's really no way you should be able to run out of memory. I suspect
android kernel's will fall over even with swap.
-Daniel

> ---
>  tests/gem_mmap_offset_exhaustion.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/tests/gem_mmap_offset_exhaustion.c b/tests/gem_mmap_offset_exhaustion.c
> index 914fe6e..016143d 100644
> --- a/tests/gem_mmap_offset_exhaustion.c
> +++ b/tests/gem_mmap_offset_exhaustion.c
> @@ -77,6 +77,10 @@ igt_simple_main
>  {
>  	int fd, i;
>  
> +#ifdef ANDROID
> +	igt_skip("Test not valid on Android\n");
> +#endif
> +
>  	igt_skip_on_simulation();
>  
>  	fd = drm_open_any();
> -- 
> 1.9.2
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch