[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>

1 files changed, 3 insertions, 0 deletions

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e0e84924171b..a5e6891f7bb6 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)