diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2009-04-01 02:23:25 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-01 19:59:14 +0400 |
| commit | f4112de6b679d84bd9b9681c7504be7bdfb7c7d5 (patch) | |
| tree | c9a5665b31e751e1d4255b8c35a6245d5abfa3eb /include/linux/highmem.h | |
| parent | 851a039cc547b33b8139fe6d7c2bbfb158e2724e (diff) | |
| download | linux-f4112de6b679d84bd9b9681c7504be7bdfb7c7d5.tar.xz | |
mm: introduce debug_kmap_atomic
x86 has debug_kmap_atomic_prot() which is error checking function for
kmap_atomic. It is usefull for the other architectures, although it needs
CONFIG_TRACE_IRQFLAGS_SUPPORT.
This patch exposes it to the other architectures.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/highmem.h')
| -rw-r--r-- | include/linux/highmem.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/highmem.h b/include/linux/highmem.h index 13875ce9112a..7ff5c55f9b55 100644 --- a/include/linux/highmem.h +++ b/include/linux/highmem.h @@ -187,4 +187,16 @@ static inline void copy_highpage(struct page *to, struct page *from) kunmap_atomic(vto, KM_USER1); } +#if defined(CONFIG_DEBUG_HIGHMEM) && defined(CONFIG_TRACE_IRQFLAGS_SUPPORT) + +void debug_kmap_atomic(enum km_type type); + +#else + +static inline void debug_kmap_atomic(enum km_type type) +{ +} + +#endif + #endif /* _LINUX_HIGHMEM_H */ |