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/linux/arch/xtensa/include/asm/
H A Dspinlock_types.hdiff 579afe866f52adcd921272a224ab36733051059c Tue Jan 01 23:08:32 CET 2019 Max Filippov <jcmvbkbc@gmail.com> xtensa: use generic spinlock/rwlock implementation

Drop custom spinlock/rwlock code and use ones from asm-generic. This way
there is less code duplication (atomic primitives are reused).

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
H A Dspinlock.hdiff 579afe866f52adcd921272a224ab36733051059c Tue Jan 01 23:08:32 CET 2019 Max Filippov <jcmvbkbc@gmail.com> xtensa: use generic spinlock/rwlock implementation

Drop custom spinlock/rwlock code and use ones from asm-generic. This way
there is less code duplication (atomic primitives are reused).

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
/linux/Documentation/features/locking/queued-rwlocks/
H A Darch-support.txtdiff da422ade5c879355f7410859069ef4f957c303d4 Tue Jul 23 15:22:03 CEST 2019 Mark Rutland <mark.rutland@arm.com> Documentation/features/locking: update lists

The locking feature lists don't match reality as of v5.3-rc1:

* arm64 moved to queued spinlocks in commit:
c11090474d70590170cf5fa6afe85864ab494b37
("arm64: locking: Replace ticket lock implementation with qspinlock")

* xtensa moved to queued spinlocks and rwlocks in commit:
579afe866f52adcd921272a224ab36733051059c
("xtensa: use generic spinlock/rwlock implementation")

* architecture-specific rwsem support was removed in commit:
46ad0840b1584b92b5ff2cc3ed0b011dd6b8e0f1
("locking/rwsem: Remove arch specific rwsem files")

So update the feature lists accordingly, and remove the now redundant
rwsem-optimized list.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
/linux/Documentation/features/locking/queued-spinlocks/
H A Darch-support.txtdiff da422ade5c879355f7410859069ef4f957c303d4 Tue Jul 23 15:22:03 CEST 2019 Mark Rutland <mark.rutland@arm.com> Documentation/features/locking: update lists

The locking feature lists don't match reality as of v5.3-rc1:

* arm64 moved to queued spinlocks in commit:
c11090474d70590170cf5fa6afe85864ab494b37
("arm64: locking: Replace ticket lock implementation with qspinlock")

* xtensa moved to queued spinlocks and rwlocks in commit:
579afe866f52adcd921272a224ab36733051059c
("xtensa: use generic spinlock/rwlock implementation")

* architecture-specific rwsem support was removed in commit:
46ad0840b1584b92b5ff2cc3ed0b011dd6b8e0f1
("locking/rwsem: Remove arch specific rwsem files")

So update the feature lists accordingly, and remove the now redundant
rwsem-optimized list.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
/linux/arch/xtensa/
H A DKconfigdiff 579afe866f52adcd921272a224ab36733051059c Tue Jan 01 23:08:32 CET 2019 Max Filippov <jcmvbkbc@gmail.com> xtensa: use generic spinlock/rwlock implementation

Drop custom spinlock/rwlock code and use ones from asm-generic. This way
there is less code duplication (atomic primitives are reused).

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>