diff options
| author | Andrey Konovalov <andreyknvl@google.com> | 2022-03-24 18:11:23 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-24 19:06:47 -0700 |
| commit | f49d9c5bb15cc5c470097078ec1f26ff605ae1a2 (patch) | |
| tree | db36830ea1a25d0e208ca704baa6bae95f1565a2 /include/linux/gfp.h | |
| parent | 19f1c3acf8f4431982355b2e8a78e42b884dd788 (diff) | |
kasan, mm: only define ___GFP_SKIP_KASAN_POISON with HW_TAGS
Only define the ___GFP_SKIP_KASAN_POISON flag when CONFIG_KASAN_HW_TAGS is
enabled.
This patch it not useful by itself, but it prepares the code for additions
of new KASAN-specific GFP patches.
Link: https://lkml.kernel.org/r/44e5738a584c11801b2b8f1231898918efc8634a.1643047180.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@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/gfp.h')
| -rw-r--r-- | include/linux/gfp.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 72dc4ca75cf3..75abf8d5bc9b 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -54,7 +54,11 @@ struct vm_area_struct; #define ___GFP_THISNODE 0x200000u #define ___GFP_ACCOUNT 0x400000u #define ___GFP_ZEROTAGS 0x800000u +#ifdef CONFIG_KASAN_HW_TAGS #define ___GFP_SKIP_KASAN_POISON 0x1000000u +#else +#define ___GFP_SKIP_KASAN_POISON 0 +#endif #ifdef CONFIG_LOCKDEP #define ___GFP_NOLOCKDEP 0x2000000u #else @@ -251,7 +255,9 @@ struct vm_area_struct; #define __GFP_NOLOCKDEP ((__force gfp_t)___GFP_NOLOCKDEP) /* Room for N __GFP_FOO bits */ -#define __GFP_BITS_SHIFT (25 + IS_ENABLED(CONFIG_LOCKDEP)) +#define __GFP_BITS_SHIFT (24 + \ + IS_ENABLED(CONFIG_KASAN_HW_TAGS) + \ + IS_ENABLED(CONFIG_LOCKDEP)) #define __GFP_BITS_MASK ((__force gfp_t)((1 << __GFP_BITS_SHIFT) - 1)) /** |