[PATCH libdrm] amdgpu/basic_tests.c: check for fork

[Christian König]

Well NAK, cause that obviously would break the test if fork() isn't 
available.

We certainly don't have any platform where we support amdgpu and fork() 
is not available, so that change is rather pointless in the first place.

Christian.

Am 10.03.19 um 10:44 schrieb Fabrice Fontaine:
> amdgpu test program use fork since
> https://cgit.freedesktop.org/mesa/drm/commit/tests/amdgpu/basic_tests.c?id=736ef0b61cab55378202c5f49d91799cc2b99091
>
> However, this function is not always available so add a check for it in
> configure.ac and use it in tests/amdgpu/basic_tests.c
>
> Fixes:
>   - http://autobuild.buildroot.org/results/8d6194982c1080e173fcef8212fb06e6dc275d58
>
> Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
> ---
>   configure.ac               | 2 ++
>   tests/amdgpu/basic_tests.c | 4 ++++
>   2 files changed, 6 insertions(+)
>
> diff --git a/configure.ac b/configure.ac
> index d72e84ad..6effb9a2 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -193,6 +193,8 @@ AC_CHECK_FUNCS([open_memstream],
>                  [AC_DEFINE([HAVE_OPEN_MEMSTREAM], 1, [Have open_memstream()])],
>                  [AC_DEFINE([HAVE_OPEN_MEMSTREAM], 0)])
>   
> +AC_CHECK_FUNCS([fork])
> +
>   dnl Use lots of warning flags with with gcc and compatible compilers
>   
>   dnl Note: if you change the following variable, the cache is automatically
> diff --git a/tests/amdgpu/basic_tests.c b/tests/amdgpu/basic_tests.c
> index dbae4d53..c32a1351 100644
> --- a/tests/amdgpu/basic_tests.c
> +++ b/tests/amdgpu/basic_tests.c
> @@ -1646,10 +1646,12 @@ static void amdgpu_userptr_test(void)
>   	while (j++ < sdma_write_length)
>   		pm4[i++] = 0xdeadbeaf;
>   
> +#ifdef HAVE_FORK
>   	if (!fork()) {
>   		pm4[0] = 0x0;
>   		exit(0);
>   	}
> +#endif
>   
>   	amdgpu_test_exec_cs_helper(context_handle,
>   				   AMDGPU_HW_IP_DMA, 0,
> @@ -1675,7 +1677,9 @@ static void amdgpu_userptr_test(void)
>   	r = amdgpu_cs_ctx_free(context_handle);
>   	CU_ASSERT_EQUAL(r, 0);
>   
> +#ifdef HAVE_FORK
>   	wait(NULL);
> +#endif
>   }
>   
>   static void amdgpu_sync_dependency_test(void)