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d1be6a28b1
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>
13 lines
249 B
C
13 lines
249 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_GENERIC_MMIOWB_TYPES_H
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#define __ASM_GENERIC_MMIOWB_TYPES_H
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#include <linux/types.h>
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struct mmiowb_state {
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u16 nesting_count;
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u16 mmiowb_pending;
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};
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#endif /* __ASM_GENERIC_MMIOWB_TYPES_H */
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