tests/gem_exec_big: fixups

- don't emit a self-modifying batch, the kernel doesn't like those
- also change the buffer size, to exercise all corner-cases of the
  sg_table stuff

diff --git a/tests/gem_exec_big.c b/tests/gem_exec_big.c
index e192a7b..3005762 100644 (file)
--- a/tests/gem_exec_big.c
+++ b/tests/gem_exec_big.c
@@ -64,7 +64,7 @@ static int exec(int fd, uint32_t handle, uint32_t reloc_ofs)
        gem_reloc[0].delta = 0;
        gem_reloc[0].target_handle = handle;
        gem_reloc[0].read_domains = I915_GEM_DOMAIN_RENDER;
-       gem_reloc[0].write_domain = I915_GEM_DOMAIN_RENDER;
+       gem_reloc[0].write_domain = 0;
        gem_reloc[0].presumed_offset = 0;
 
        gem_exec[0].handle = handle;
@@ -94,6 +94,7 @@ static int exec(int fd, uint32_t handle, uint32_t reloc_ofs)
        gem_sync(fd, handle);
 
        gem_read(fd, handle, reloc_ofs, &tmp, 4);
+
        assert(tmp == gem_reloc[0].presumed_offset);
 
        return ret;
@@ -105,15 +106,18 @@ int main(int argc, char **argv)
        uint32_t handle;
        int fd;
        uint32_t reloc_ofs;
+       unsigned batch_size;
 
        fd = drm_open_any();
 
-       handle = gem_create(fd, BATCH_SIZE);
-       gem_write(fd, handle, 0, batch, sizeof(batch));
+       for (batch_size = BATCH_SIZE/4; batch_size <= BATCH_SIZE; batch_size += 4096) {
+               handle = gem_create(fd, batch_size);
+               gem_write(fd, handle, 0, batch, sizeof(batch));
 
-       for (reloc_ofs = 4096; reloc_ofs < BATCH_SIZE; reloc_ofs += 4096)
-               if (exec(fd, handle, reloc_ofs))
-                       exit(1);
+               for (reloc_ofs = 4096; reloc_ofs < batch_size; reloc_ofs += 4096)
+                       if (exec(fd, handle, reloc_ofs))
+                               exit(1);
+       }
 
        gem_close(fd, handle);