From de5097c2e73f826302cd8957c225b3725e0c7553 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Mon, 9 Jan 2006 15:59:21 -0800
Subject: [PATCH] mutex subsystem, more debugging code

more mutex debugging: check for held locks during memory freeing,
task exit, enable sysrq printouts, etc.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
---
 mm/page_alloc.c | 3 +++
 mm/slab.c       | 1 +
 2 files changed, 4 insertions(+)

(limited to 'mm')

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e0e84924171b4f..a5e6891f7bb6f3 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -415,6 +415,9 @@ static void __free_pages_ok(struct page *page, unsigned int order)
 	int reserved = 0;
 
 	arch_free_page(page, order);
+	if (!PageHighMem(page))
+		mutex_debug_check_no_locks_freed(page_address(page),
+			page_address(page+(1<<order)));
 
 #ifndef CONFIG_MMU
 	for (i = 1 ; i < (1 << order) ; ++i)
diff --git a/mm/slab.c b/mm/slab.c
index 1c46c6383552ff..33aab345cd4a0f 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3071,6 +3071,7 @@ void kfree(const void *objp)
 	local_irq_save(flags);
 	kfree_debugcheck(objp);
 	c = page_get_cache(virt_to_page(objp));
+	mutex_debug_check_no_locks_freed(objp, objp+obj_reallen(c));
 	__cache_free(c, (void *)objp);
 	local_irq_restore(flags);
 }
-- 
cgit 1.2.3-korg