From: Matthew Brost <matthew.brost@intel.com>
Date: Wed, 23 Apr 2025 17:17:24 +0000 (-0700)
Subject: drm/print: Add drm_coredump_printer_is_full
X-Git-Tag: v6.16-rc1~33^2~26^2~5
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=fa4b8b3e3a11765a42066f23db7100c09a661c25;p=linux-block.git

drm/print: Add drm_coredump_printer_is_full

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)
v3:
 - Bail if not a coredump printer (Michal)

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Link: https://lore.kernel.org/r/20250423171725.597955-4-matthew.brost@intel.com
---

diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h
index f31eba1c7cab..ab017b05e175 100644
--- a/include/drm/drm_print.h
+++ b/include/drm/drm_print.h
@@ -344,6 +344,26 @@ 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;
+
+	if (p->printfn != __drm_printfn_coredump)
+		return true;
+
+	return !iterator->remain;
+}
+
 /**
  * drm_seq_file_printer - construct a &drm_printer that outputs to &seq_file
  * @f:  the &struct seq_file to output to