Changeset e037cf37 in mainline for kernel/genarch/src/fb/fb.c

Timestamp:

2020-12-29T22:17:21Z (3 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

11e394f, d70dc1c4

Parents:

1483981

Message:

Show kernel console again when its physical area is unmapped

It's good to be able to see the stack trace if e.g. display server
crashes.

File:

• kernel/genarch/src/fb/fb.c (modified) (2 diffs)

kernel/genarch/src/fb/fb.c

@@ -516 +516 @@
 }
 
+/** Framebuffer was mapped or unmapped.
+ *
+ * @param arg Framebuffer instance
+ */
+static void fb_mapped_changed(void *arg)
+{
+        fb_instance_t *instance = (fb_instance_t *) arg;
+
+        if (!instance->parea.mapped) {
+                spinlock_lock(&instance->lock);
+                fb_redraw_internal(instance);
+                spinlock_unlock(&instance->lock);
+        }
+}
+
 /** Initialize framebuffer as a output character device
  *
@@ -661 +676 @@
         instance->parea.unpriv = false;
         instance->parea.mapped = false;
+        instance->parea.mapped_changed = fb_mapped_changed;
+        instance->parea.arg = (void *) instance;
         ddi_parea_register(&instance->parea);