[PATCH 05/13] drm: Add put callback for the coredump printer

[Chris Wilson]

Quoting Jordan Crouse (2018-07-12 19:59:22)
> Add a put function for the coredump printer to bypass printf()
> for constant strings for a speed boost.
> 
> v2: Add EXPORT_SYMBOL for _drm_puts_coredump
> Signed-off-by: Jordan Crouse <jcrouse at codeaurora.org>
> ---
>  drivers/gpu/drm/drm_print.c | 43 +++++++++++++++++++++++++++++++++++++
>  include/drm/drm_print.h     |  2 ++
>  2 files changed, 45 insertions(+)
> 
> diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c
> index bef8f0ec5d73..ff20f4a764c8 100644
> --- a/drivers/gpu/drm/drm_print.c
> +++ b/drivers/gpu/drm/drm_print.c
> @@ -30,6 +30,49 @@
>  #include <drm/drmP.h>
>  #include <drm/drm_print.h>
>  
> +void __drm_puts_coredump(struct drm_printer *p, const char *str)
> +{
> +       struct drm_print_iterator *iterator = p->arg;
> +
> +       ssize_t len;
> +
> +       if (!iterator->remain)
> +               return;
> +
> +       if (iterator->offset < iterator->start) {
> +               ssize_t copy;
> +
> +               len = strlen(str);
> +

printfn_coredump looks like it would then wrap puts_coredump?
-Chris