diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2009-03-31 15:23:25 -0700 |
|---|---|---|
| committer | Gary King <GKing@nvidia.com> | 2010-02-02 15:57:02 -0800 |
| commit | 04c78b2033666f80a947e67bc93f820d5b90df3f (patch) | |
| tree | 6e02d561b862fc2cb5b784364d8624e7d1673e15 /include | |
| parent | 5e111be15399ad9ba481ac57f063cfa7a7bc64ef (diff) | |
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')
| -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 */ |