Add drm_puts() for a much faster path to print constant strings into a drm_printer object with memcpy and friends. This can shave seconds off of really large outputs such as GPU dumps.
If the drm_printer object supports a custom puts function then use that otherwise fall back to the slower legacy printf call.
Signed-off-by: Jordan Crouse jcrouse@codeaurora.org --- drivers/gpu/drm/drm_print.c | 9 +++++++++ include/drm/drm_print.h | 2 ++ 2 files changed, 11 insertions(+)
diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c index 03d1f98e5ac7..8fd489248a50 100644 --- a/drivers/gpu/drm/drm_print.c +++ b/drivers/gpu/drm/drm_print.c @@ -122,6 +122,15 @@ void __drm_printfn_debug(struct drm_printer *p, struct va_format *vaf) } EXPORT_SYMBOL(__drm_printfn_debug);
+void drm_puts(struct drm_printer *p, const char *str) +{ + if (p->puts) + p->puts(p, str); + else + drm_printf(p, "%s", str); +} +EXPORT_SYMBOL(drm_puts); + /** * drm_printf - print to a &drm_printer stream * @p: the &drm_printer diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h index 0ea440fb5ec3..b16f4ecaa984 100644 --- a/include/drm/drm_print.h +++ b/include/drm/drm_print.h @@ -69,6 +69,7 @@ struct drm_printer { /* private: */ void (*printfn)(struct drm_printer *p, struct va_format *vaf); + void (*puts)(struct drm_printer *p, const char *str); void *arg; const char *prefix; }; @@ -80,6 +81,7 @@ void __drm_printfn_debug(struct drm_printer *p, struct va_format *vaf);
__printf(2, 3) void drm_printf(struct drm_printer *p, const char *f, ...); +void drm_puts(struct drm_printer *p, const char *str);
__printf(2, 0) /**