[PATCH] pi-futex: introduce debug_check_no_locks_freed()

Add debug_check_no_locks_freed(), as a central inline to add
bad-lock-free-debugging functionality to.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/arch/i386/mm/pageattr.c b/arch/i386/mm/pageattr.c
index 0887b34..353a836 100644 (file)
--- a/arch/i386/mm/pageattr.c
+++ b/arch/i386/mm/pageattr.c
@@ -229,8 +229,8 @@ void kernel_map_pages(struct page *page, int numpages, int enable)
        if (PageHighMem(page))
                return;
        if (!enable)
-               mutex_debug_check_no_locks_freed(page_address(page),
-                                                numpages * PAGE_SIZE);
+               debug_check_no_locks_freed(page_address(page),
+                                          numpages * PAGE_SIZE);
 
        /* the return value is ignored - the calls cannot fail,
         * large pages are disabled at boot time.

diff --git a/include/linux/mm.h b/include/linux/mm.h
index ff1fa87..0ac2557 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1030,13 +1030,19 @@ static inline void vm_stat_account(struct mm_struct *mm,
 }
 #endif /* CONFIG_PROC_FS */
 
+static inline void
+debug_check_no_locks_freed(const void *from, unsigned long len)
+{
+       mutex_debug_check_no_locks_freed(from, len);
+}
+
 #ifndef CONFIG_DEBUG_PAGEALLOC
 static inline void
 kernel_map_pages(struct page *page, int numpages, int enable)
 {
        if (!PageHighMem(page) && !enable)
-               mutex_debug_check_no_locks_freed(page_address(page),
-                                                numpages * PAGE_SIZE);
+               debug_check_no_locks_freed(page_address(page),
+                                          numpages * PAGE_SIZE);
 }
 #endif
 

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index dafd12e..084a2de 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -446,8 +446,8 @@ static void __free_pages_ok(struct page *page, unsigned int order)
 
        arch_free_page(page, order);
        if (!PageHighMem(page))
-               mutex_debug_check_no_locks_freed(page_address(page),
-                                                PAGE_SIZE<<order);
+               debug_check_no_locks_freed(page_address(page),
+                                          PAGE_SIZE<<order);
 
        for (i = 0 ; i < (1 << order) ; ++i)
                reserved += free_pages_check(page + i);

diff --git a/mm/slab.c b/mm/slab.c
index d1d5527..f378d02 100644 (file)
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3397,7 +3397,7 @@ void kfree(const void *objp)
        local_irq_save(flags);
        kfree_debugcheck(objp);
        c = virt_to_cache(objp);
-       mutex_debug_check_no_locks_freed(objp, obj_size(c));
+       debug_check_no_locks_freed(objp, obj_size(c));
        __cache_free(c, (void *)objp);
        local_irq_restore(flags);
 }