kernel/linux.git/include/linux/atomic/atomic-instrumented.h, branch v6.1.168Linux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=v6.1.1682022-05-17T22:08:27+00:00locking/atomic: Add generic try_cmpxchg64 support2022-05-17T22:08:27+00:00Uros Bizjakubizjak@gmail.com2022-05-15T18:42:03+00:00urn:sha1:0aa7be05d83cc584da0782405e8007e351dfb6cc
Add generic support for try_cmpxchg64{,_acquire,_release,_relaxed}
and their falbacks involving cmpxchg64.
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220515184205.103089-2-ubizjak@gmail.com
locking/atomics, kcsan: Add instrumentation for barriers2021-12-10T00:42:27+00:00Marco Elverelver@google.com2021-11-30T11:44:24+00:00urn:sha1:e87c4f6642f49627c3430cb3ee78c73fb51b48e4
Adds the required KCSAN instrumentation for barriers of atomics.
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
locking/atomic: add arch_atomic_long*()2021-07-16T16:46:45+00:00Mark Rutlandmark.rutland@arm.com2021-07-13T10:52:52+00:00urn:sha1:67d1b0de258ad066e1fc85d0ceaa75e107fb45bb
Now that all architectures provide arch_{atomic,atomic64}_*(), we can
build arch_atomic_long_*() atop these, which can be safely used in
noinstr code. The regular atomic_long_*() wrappers are built atop these,
as we do for {atomic,atomic64}_*() atop arch_{atomic,atomic64}_*().
We don't provide arch_* versions of the cond_read*() variants, as we
don't have arch_* versions of the underlying atomic/atomic64 functions
(nor the smp_cond_load*() helpers these are typically based on).
Note that the headers in this patch under include/linux/atomic/ are
generated by the scripts in scripts/atomic/.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210713105253.7615-5-mark.rutland@arm.com
locking/atomic: centralize generated headers2021-07-16T16:46:45+00:00Mark Rutlandmark.rutland@arm.com2021-07-13T10:52:51+00:00urn:sha1:e3d18cee258b898017b298b5b93f8134dd62aee3
The generated atomic headers are only intended to be included directly
by <linux/atomic.h>, but are spread across include/linux/ and
include/asm-generic/, where people mnay be encouraged to include them.
This patch centralizes them under include/linux/atomic/.
Other than the header guards and hashes, there is no change to any of
the generated headers as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210713105253.7615-4-mark.rutland@arm.com