Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
36 lines
2.0 KiB
Plaintext
36 lines
2.0 KiB
Plaintext
Prior Operation Subsequent Operation
|
|
--------------- ---------------------------
|
|
C Self R W RMW Self R W DR DW RMW SV
|
|
-- ---- - - --- ---- - - -- -- --- --
|
|
|
|
Relaxed store Y Y
|
|
Relaxed load Y Y Y Y
|
|
Relaxed RMW operation Y Y Y Y
|
|
rcu_dereference() Y Y Y Y
|
|
Successful *_acquire() R Y Y Y Y Y Y
|
|
Successful *_release() C Y Y Y W Y
|
|
smp_rmb() Y R Y Y R
|
|
smp_wmb() Y W Y Y W
|
|
smp_mb() & synchronize_rcu() CP Y Y Y Y Y Y Y Y
|
|
Successful full non-void RMW CP Y Y Y Y Y Y Y Y Y Y Y
|
|
smp_mb__before_atomic() CP Y Y Y a a a a Y
|
|
smp_mb__after_atomic() CP a a Y Y Y Y Y Y
|
|
|
|
|
|
Key: Relaxed: A relaxed operation is either READ_ONCE(), WRITE_ONCE(),
|
|
a *_relaxed() RMW operation, an unsuccessful RMW
|
|
operation, a non-value-returning RMW operation such
|
|
as atomic_inc(), or one of the atomic*_read() and
|
|
atomic*_set() family of operations.
|
|
C: Ordering is cumulative
|
|
P: Ordering propagates
|
|
R: Read, for example, READ_ONCE(), or read portion of RMW
|
|
W: Write, for example, WRITE_ONCE(), or write portion of RMW
|
|
Y: Provides ordering
|
|
a: Provides ordering given intervening RMW atomic operation
|
|
DR: Dependent read (address dependency)
|
|
DW: Dependent write (address, data, or control dependency)
|
|
RMW: Atomic read-modify-write operation
|
|
SELF: Orders self, as opposed to accesses before and/or after
|
|
SV: Orders later accesses to the same variable
|