[PATCH v2 3/4] drm/print: Add drm_printer_is_full

[Matthew Brost <matthew.brost@intel.com>]

Add drm_printer_is_full which indicates if a drm printer's output is
full. Useful to short circuit coredump printing once printer's output is
full.

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
---
 include/drm/drm_print.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h
index f31eba1c7cab..db7517ee1b19 100644
--- a/include/drm/drm_print.h
+++ b/include/drm/drm_print.h
@@ -242,6 +242,23 @@ struct drm_print_iterator {
 	ssize_t offset;
 };
 
+/**
+ * drm_printer_is_full() - DRM printer output is full
+ * @p: DRM printer
+ *
+ * DRM printer output is full, useful to short circuit coredump printing once
+ * printer is full.
+ *
+ * RETURNS:
+ * True if DRM printer output buffer is full, False otherwise
+ */
+static inline bool drm_printer_is_full(struct drm_printer *p)
+{
+	struct drm_print_iterator *iterator = p->arg;
+
+	return !iterator->remain;
+}
+
 /**
  * drm_coredump_printer - construct a &drm_printer that can output to a buffer
  * from the read function for devcoredump
-- 
2.34.1