Hi Linus,
please pull two urgent RCU, KCSAN-related fixes.
Thx.
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The following changes since commit b3a9e3b9622ae10064826dccb4f7a52bd88c7407:
Linux 5.8-rc1 (2020-06-14 12:45:04 -0700)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
tags/rcu_urgent_for_5.8_rc3
for you to fetch changes up to b58e733fd774f3f4b49d9e7640d172a57e35200e:
rcu: Fixup noinstr warnings (2020-06-25 08:24:32 -0700)
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Paul E. McKenney says:
A single commit that uses "arch_" atomic operations to avoid the
instrumentation that comes with the non-"arch_" versions. In preparation
for that commit, it also has another commit that makes these "arch_"
atomic operations available to generic code.
Without these commits, KCSAN uses can see pointless errors.
Both from Peter Zijlstra.
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Peter Zijlstra (2):
locking/atomics: Provide the arch_atomic_ interface to generic code
rcu: Fixup noinstr warnings
include/linux/atomic-fallback.h | 236 +++++++++++++++++++++++++++++++++-
include/linux/compiler.h | 2 +-
kernel/rcu/tree.c | 32 ++++-
scripts/atomic/gen-atomic-fallback.sh | 31 +++++
4 files changed, 292 insertions(+), 9 deletions(-)
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Regards/Gruss,
Boris.
SUSE Software Solutions Germany GmbH, GF: Felix Imendörffer, HRB 36809, AG
Nürnberg
