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| author | Catalin Marinas <catalin.marinas@arm.com> | 2020-07-31 18:09:57 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2020-07-31 18:09:57 +0100 |
| commit | 0e4cd9f2654915be8d09a1bd1b405ce5426e64c4 (patch) | |
| tree | 0aeb119873c87509ff54cbc9c6946b271f3780bf /Documentation/RCU/Design/Requirements/Requirements.rst | |
| parent | 18aa3bd58b1428d1927fe11f85ad444423d4fc59 (diff) | |
| parent | 5f1f7f6c205a2e7f1d92229ac358254bd2826c2d (diff) | |
| download | linux-0e4cd9f2654915be8d09a1bd1b405ce5426e64c4.tar.bz2 | |
Merge branch 'for-next/read-barrier-depends' into for-next/core
* for-next/read-barrier-depends:
: Allow architectures to override __READ_ONCE()
arm64: Reduce the number of header files pulled into vmlinux.lds.S
compiler.h: Move compiletime_assert() macros into compiler_types.h
checkpatch: Remove checks relating to [smp_]read_barrier_depends()
include/linux: Remove smp_read_barrier_depends() from comments
tools/memory-model: Remove smp_read_barrier_depends() from informal doc
Documentation/barriers/kokr: Remove references to [smp_]read_barrier_depends()
Documentation/barriers: Remove references to [smp_]read_barrier_depends()
locking/barriers: Remove definitions for [smp_]read_barrier_depends()
alpha: Replace smp_read_barrier_depends() usage with smp_[r]mb()
vhost: Remove redundant use of read_barrier_depends() barrier
asm/rwonce: Don't pull <asm/barrier.h> into 'asm-generic/rwonce.h'
asm/rwonce: Remove smp_read_barrier_depends() invocation
alpha: Override READ_ONCE() with barriered implementation
asm/rwonce: Allow __READ_ONCE to be overridden by the architecture
compiler.h: Split {READ,WRITE}_ONCE definitions out into rwonce.h
tools: bpf: Use local copy of headers including uapi/linux/filter.h
Diffstat (limited to 'Documentation/RCU/Design/Requirements/Requirements.rst')
| -rw-r--r-- | Documentation/RCU/Design/Requirements/Requirements.rst | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/RCU/Design/Requirements/Requirements.rst b/Documentation/RCU/Design/Requirements/Requirements.rst index 75b8ca007a11..50d5c43c48b0 100644 --- a/Documentation/RCU/Design/Requirements/Requirements.rst +++ b/Documentation/RCU/Design/Requirements/Requirements.rst @@ -463,7 +463,7 @@ again without disrupting RCU readers. This guarantee was only partially premeditated. DYNIX/ptx used an explicit memory barrier for publication, but had nothing resembling ``rcu_dereference()`` for subscription, nor did it have anything -resembling the ``smp_read_barrier_depends()`` that was later subsumed +resembling the dependency-ordering barrier that was later subsumed into ``rcu_dereference()`` and later still into ``READ_ONCE()``. The need for these operations made itself known quite suddenly at a late-1990s meeting with the DEC Alpha architects, back in the days when |