On Sat, 2019-11-09 at 15:10 +0000, Chris Wilson wrote:
> igt_aux.h already provides the optimal igt_fls(), so use that in
> preference to open coding the brute force version.
>
> Reported-by: Stuart Summers <stuart.summers@xxxxxxxxx>
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Cc: Stuart Summers <stuart.summers@xxxxxxxxx>
Thanks for the look here Chris :)
-Stuart
> ---
> tests/i915/gem_blits.c | 12 +-----------
> 1 file changed, 1 insertion(+), 11 deletions(-)
>
> diff --git a/tests/i915/gem_blits.c b/tests/i915/gem_blits.c
> index e0346a7c7..f9cb12bb8 100644
> --- a/tests/i915/gem_blits.c
> +++ b/tests/i915/gem_blits.c
> @@ -57,16 +57,6 @@ enum mode {
> WC,
> };
>
> -static int fls(uint64_t x)
> -{
> - int t;
> -
> - for (t = 0; x >> t; t++)
> - ;
> -
> - return t;
> -}
> -
> static unsigned int
> get_tiling_stride(const struct device *device,
> unsigned int width, unsigned int tiling)
> @@ -81,7 +71,7 @@ get_tiling_stride(const struct device *device,
> else
> stride = ALIGN(stride, 128);
> if (device->gen < 4)
> - stride = 1 << fls(stride - 1);
> + stride = 1 << igt_fls(stride - 1);
> } else {
> if (device->gen >= 8)
> stride = ALIGN(stride, 64);
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