This series (based on v4.17-rc3) allows arm64's atomics to be instrumented, which should make it easier to catch bugs where atomics are used on erroneous memory locations.
The bulk of the diffstat is teaching the generic instrumentation about the acquire/release/relaxed variants of each atomic, along with some optional atomics which x86 doesn't implement directly. To build an arm64 defonfig one additional patch [1] is required, which fixes an include in the SUNRPC code. I've pushed the series, along with that patch, to my arm64/atomic-instrumentation branch [2]. This has seen basic testing on a Juno R1 machine so far. Thanks, Mark. [1] https://lkml.kernel.org/r/1489574142-20856-1-git-send-email-mark.rutl...@arm.com [2] git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64/atomic-instrumentation Mark Rutland (6): locking/atomic, asm-generic: instrument ordering variants locking/atomic, asm-generic: instrument atomic*andnot*() arm64: use <linux/atomic.h> for cmpxchg arm64: fix assembly constraints for cmpxchg arm64: use instrumented atomics arm64: instrument smp_{load_acquire,store_release} arch/arm64/include/asm/atomic.h | 299 +++---- arch/arm64/include/asm/atomic_ll_sc.h | 30 +- arch/arm64/include/asm/atomic_lse.h | 43 +- arch/arm64/include/asm/barrier.h | 22 +- arch/arm64/include/asm/cmpxchg.h | 25 +- arch/arm64/include/asm/pgtable.h | 2 +- arch/arm64/include/asm/sync_bitops.h | 3 +- arch/arm64/mm/fault.c | 2 +- include/asm-generic/atomic-instrumented.h | 1305 +++++++++++++++++++++++++---- 9 files changed, 1339 insertions(+), 392 deletions(-) -- 2.11.0
