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authorDaniel Axtens <dja@axtens.net>2019-08-20 12:49:40 +1000
committerMichael Ellerman <mpe@ellerman.id.au>2019-11-07 13:15:39 +1100
commit81d2c6f81996e01fbcd2b5aeefbb519e21c806e9 (patch)
tree33c5485ffb75626553956021e777a02c34e8d991 /arch/x86/include/asm/bitops.h
parentda0c9ea146cbe92b832f1b0f694840ea8eb33cce (diff)
kasan: support instrumented bitops combined with generic bitops
Currently bitops-instrumented.h assumes that the architecture provides atomic, non-atomic and locking bitops (e.g. both set_bit and __set_bit). This is true on x86 and s390, but is not always true: there is a generic bitops/non-atomic.h header that provides generic non-atomic operations, and also a generic bitops/lock.h for locking operations. powerpc uses the generic non-atomic version, so it does not have it's own e.g. __set_bit that could be renamed arch___set_bit. Split up bitops-instrumented.h to mirror the atomic/non-atomic/lock split. This allows arches to only include the headers where they have arch-specific versions to rename. Update x86 and s390. (The generic operations are automatically instrumented because they're written in C, not asm.) Suggested-by: Christophe Leroy <christophe.leroy@c-s.fr> Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Daniel Axtens <dja@axtens.net> Acked-by: Marco Elver <elver@google.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190820024941.12640-1-dja@axtens.net
Diffstat (limited to 'arch/x86/include/asm/bitops.h')
-rw-r--r--arch/x86/include/asm/bitops.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/include/asm/bitops.h b/arch/x86/include/asm/bitops.h
index 7d1f6a49bfae..062cdecb2f24 100644
--- a/arch/x86/include/asm/bitops.h
+++ b/arch/x86/include/asm/bitops.h
@@ -388,7 +388,9 @@ static __always_inline int fls64(__u64 x)
#include <asm-generic/bitops/const_hweight.h>
-#include <asm-generic/bitops-instrumented.h>
+#include <asm-generic/bitops/instrumented-atomic.h>
+#include <asm-generic/bitops/instrumented-non-atomic.h>
+#include <asm-generic/bitops/instrumented-lock.h>
#include <asm-generic/bitops/le.h>

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