From: Chris Wilson Date: Thu, 12 Mar 2020 15:47:08 +0000 (+0000) Subject: drm/i915/selftests: Use igt_random_offset() X-Git-Tag: v5.10.7~1861^2~24^2~644 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c46c320c02d041cb793f22550d4fc5a03d209205;p=platform%2Fkernel%2Flinux-rpi.git drm/i915/selftests: Use igt_random_offset() Switch igt_vm_isolation() to using igt_random_offset(). Signed-off-by: Chris Wilson Cc: Matthew Auld Cc: Akeem G Abodunrin Reviewed-by: Matthew Auld Link: https://patchwork.freedesktop.org/patch/msgid/20200312154708.1720-1-chris@chris-wilson.co.uk --- diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c index 77c7e65..54b86cf 100644 --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c @@ -1809,7 +1809,6 @@ static int igt_vm_isolation(void *arg) vm_total = ctx_vm(ctx_a)->total; GEM_BUG_ON(ctx_vm(ctx_b)->total != vm_total); - vm_total -= I915_GTT_PAGE_SIZE; count = 0; num_engines = 0; @@ -1828,10 +1827,10 @@ static int igt_vm_isolation(void *arg) u32 value = 0xc5c5c5c5; u64 offset; - div64_u64_rem(i915_prandom_u64_state(&prng), - vm_total, &offset); - offset = round_down(offset, alignof_dword); - offset += I915_GTT_PAGE_SIZE; + /* Leave enough space at offset 0 for the batch */ + offset = igt_random_offset(&prng, + I915_GTT_PAGE_SIZE, vm_total, + sizeof(u32), alignof_dword); err = write_to_scratch(ctx_a, engine, offset, 0xdeadbeef);