Re: [PATCH 3/3] tests/gem_userptr_benchmark: Benchmarking userptr surfaces and impact

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On 04/23/2014 06:17 PM, Volkin, Bradley D wrote:
[snip]
+static int gem_userptr(int fd, void *ptr, int size, int read_only, uint32_t *handle)
+{
+	struct local_i915_gem_userptr userptr;
+	int ret;
+
+	userptr.user_ptr = (uintptr_t)ptr;
+	userptr.user_size = size;
+	userptr.flags = userptr_flags;
+	if (read_only)
+		userptr.flags |= LOCAL_I915_USERPTR_READ_ONLY;
+
+	ret = drmIoctl(fd, LOCAL_IOCTL_I915_GEM_USERPTR, &userptr);
+	if (ret)
+		ret = errno;
+	igt_skip_on_f(ret == ENODEV &&
+		      (userptr_flags & LOCAL_I915_USERPTR_UNSYNCHRONIZED) == 0,
+		      "Skipping, synchronized mappings with no kernel CONFIG_MMU_NOTIFIER?");

I missed it the first time around, but the condition here doesn't
match the other test; it's missing the '&& !read_only'. It looks
like read_only will always be 0 in this test though, so probably
not an issue.

Reviewed-by: Brad Volkin <bradley.d.volkin@xxxxxxxxx>

Good catch! It does not matter in the benchmark but I've sent a respin for consistency and clarity.

Thanks,

Tvrtko
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