amdgpu: make userptr unit test more interesting

Do a fork() to force some MMU callbacks.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/tests/amdgpu/basic_tests.c b/tests/amdgpu/basic_tests.c
index 80d15e7..18bcf91 100644 (file)
--- a/tests/amdgpu/basic_tests.c
+++ b/tests/amdgpu/basic_tests.c
@@ -31,6 +31,7 @@
 #ifdef HAVE_ALLOCA_H
 # include <alloca.h>
 #endif
+#include <sys/wait.h>
 
 #include "CUnit/Basic.h"
 
@@ -1403,6 +1404,11 @@ static void amdgpu_userptr_test(void)
        while (j++ < sdma_write_length)
                pm4[i++] = 0xdeadbeaf;
 
+       if (!fork()) {
+               pm4[0] = 0x0;
+               exit(0);
+       }
+
        amdgpu_test_exec_cs_helper(context_handle,
                                   AMDGPU_HW_IP_DMA, 0,
                                   i, pm4,
@@ -1426,4 +1432,6 @@ static void amdgpu_userptr_test(void)
 
        r = amdgpu_cs_ctx_free(context_handle);
        CU_ASSERT_EQUAL(r, 0);
+
+       wait(NULL);
 }