Age | Commit message (Collapse) | Author | Files | Lines | |
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2019-04-08 | asm-generic/mmiowb: Add generic implementation of mmiowb() tracking | Will Deacon | 1 | -0/+63 | |
In preparation for removing all explicit mmiowb() calls from driver code, implement a tracking system in asm-generic based loosely on the PowerPC implementation. This allows architectures with a non-empty mmiowb() definition to have the barrier automatically inserted in spin_unlock() following a critical section containing an I/O write. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Will Deacon <will.deacon@arm.com> |