On Thu, Mar 09, 2017 at 11:31:11AM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote:
> this devide the time by 4 on x86
>
> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@xxxxxxxxxxxx>
> ---
> drivers/video/fbconsole.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/video/fbconsole.c b/drivers/video/fbconsole.c
> index b261f1704..b5e951e23 100644
> --- a/drivers/video/fbconsole.c
> +++ b/drivers/video/fbconsole.c
> @@ -6,6 +6,7 @@
> #include <gui/image_renderer.h>
> #include <gui/graphic_utils.h>
> #include <linux/font.h>
> +#include <linux/io.h>
>
> enum state_t {
> LIT, /* Literal input */
> @@ -202,7 +203,7 @@ static void printchar(struct fbc_priv *priv, int c)
>
> buf = gui_screen_render_buffer(priv->sc);
>
> - memcpy(buf, buf + line_height, line_height * priv->rows);
> + __iowrite64_copy(buf, buf + line_height, (line_height * priv->rows) >> 2);
Shouldn't this be >> 3?
Besides, I'm not sure using __iowrite64_copy is the right weapon here.
Maybe better port arch/x86/lib/memcpy_64.S to get an optimized memcpy?
Sascha
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