kernel/slab: Allocate one area upfront when the debug heaps are in use.

See inline comment: if we don't, we'll try to allocate pages during the post-page-init but pre-area-init period, which isn't possible (and after the previous commit will properly fail.) Change-Id: If8392417e05912c8cfc417222abab3b39cb15bf1 Reviewed-on: https://review.haiku-os.org/c/haiku/+/7700 Haiku-Format: Haiku-format Bot <[email protected]> Reviewed-by: waddlesplash <[email protected]>
2024-05-29 18:10:06 +00:00
parent ebc1a034fb
commit 7133a49e81
1 changed files with 10 additions and 0 deletions
@@ -445,6 +445,16 @@ MemoryManager::Init(kernel_args* args)
 	sFreeAreas = NULL;
 	sFreeAreaCount = 0;
 	sMaintenanceNeeded = false;
+
+#if USE_DEBUG_HEAP_FOR_MALLOC || USE_GUARDED_HEAP_FOR_MALLOC
+	// Allocate one area immediately. Otherwise, we might try to allocate before
+	// post-area initialization but after page initialization, during which time
+	// we can't actually reserve pages.
+	MutexLocker locker(sLock);
+	Area* area = NULL;
+	_AllocateArea(0, area);
+	_AddArea(area);
+#endif
 }