[PATCH v4 3/4] drm/print: Add drm_coredump_printer_is_full

[Matthew Brost]

Add drm_coredump_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.

v2:
 - s/drm_printer_is_full/drm_coredump_printer_is_full (Jani)

Signed-off-by: Matthew Brost <matthew.brost at intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt at 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..6cc35fcca4c9 100644
--- a/include/drm/drm_print.h
+++ b/include/drm/drm_print.h
@@ -344,6 +344,23 @@ drm_coredump_printer(struct drm_print_iterator *iter)
 	return p;
 }
 
+/**
+ * drm_coredump_printer_is_full() - DRM coredump printer output is full
+ * @p: DRM coredump printer
+ *
+ * DRM printer output is full, useful to short circuit coredump printing once
+ * printer is full.
+ *
+ * RETURNS:
+ * True if DRM coredump printer output buffer is full, False otherwise
+ */
+static inline bool drm_coredump_printer_is_full(struct drm_printer *p)
+{
+	struct drm_print_iterator *iterator = p->arg;
+
+	return !iterator->remain;
+}
+
 /**
  * drm_seq_file_printer - construct a &drm_printer that outputs to &seq_file
  * @f:  the &struct seq_file to output to
-- 
2.34.1