asm-generic/bitops: Use instrument_read_write() where appropriate

2020-08-24T22:09:59Z

Use the new instrument_read_write() where appropriate. Acked-by: Peter Zijlstra (Intel) Signed-off-by: Marco Elver Signed-off-by: Paul E. McKenney

asm-generic, kcsan: Add KCSAN instrumentation for bitops

2020-03-21T08:41:46Z

Add explicit KCSAN checks for bitops. Acked-by: Arnd Bergmann Signed-off-by: Marco Elver Signed-off-by: Paul E. McKenney Signed-off-by: Ingo Molnar

kasan: support instrumented bitops combined with generic bitops

2019-11-07T02:15:39Z

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 Reviewed-by: Christophe Leroy Signed-off-by: Daniel Axtens Acked-by: Marco Elver Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20190820024941.12640-1-dja@axtens.net

kernel/include/asm-generic/bitops/instrumented-lock.h, branch linux-5.11.y

asm-generic/bitops: Use instrument_read_write() where appropriate

asm-generic, kcsan: Add KCSAN instrumentation for bitops

kasan: support instrumented bitops combined with generic bitops