highmem: remove unneeded #ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT for debug_kmap_atomic()

In f4112de6b679d84bd9b9681c7504be7bdfb7c7d5 ("mm: introduce
debug_kmap_atomic") I said that debug_kmap_atomic() needs
CONFIG_TRACE_IRQFLAGS_SUPPORT.

It was wrong.  (I thought irqs_disabled() is only available when the
architecture has CONFIG_TRACE_IRQFLAGS_SUPPORT)

Remove the #ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT check to enable
kmap_atomic() debugging for the architectures which do not have
CONFIG_TRACE_IRQFLAGS_SUPPORT.

Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/highmem.h b/include/linux/highmem.h
index 74152c08ad0753be98d05b627eb4a035a68624c9..caafd0561aa1353c88a2ef56bcde5ec026fd7e8c 100644 (file)
--- a/include/linux/highmem.h
+++ b/include/linux/highmem.h
@@ -27,7 +27,7 @@ static inline void invalidate_kernel_vmap_range(void *vaddr, int size)
 
 #include <asm/kmap_types.h>
 
-#if defined(CONFIG_DEBUG_HIGHMEM) && defined(CONFIG_TRACE_IRQFLAGS_SUPPORT)
+#ifdef CONFIG_DEBUG_HIGHMEM
 
 void debug_kmap_atomic(enum km_type type);
 

diff --git a/mm/highmem.c b/mm/highmem.c
index bed8a8bfd01f2ae96a9d3a7d7a64bc512229b445..66baa20f78f5a4265f16ebf6bb0b7d131bf80684 100644 (file)
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -422,7 +422,7 @@ void __init page_address_init(void)
 
 #endif /* defined(CONFIG_HIGHMEM) && !defined(WANT_PAGE_VIRTUAL) */
 
-#if defined(CONFIG_DEBUG_HIGHMEM) && defined(CONFIG_TRACE_IRQFLAGS_SUPPORT)
+#ifdef CONFIG_DEBUG_HIGHMEM
 
 void debug_kmap_atomic(enum km_type type)
 {