Commit | Line | Data |
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620a6fd1 IM |
1 | /* |
2 | * asm-generic/mutex-null.h | |
3 | * | |
4 | * Generic implementation of the mutex fastpath, based on NOP :-) | |
5 | * | |
6 | * This is used by the mutex-debugging infrastructure, but it can also | |
7 | * be used by architectures that (for whatever reason) want to use the | |
8 | * spinlock based slowpath. | |
9 | */ | |
10 | #ifndef _ASM_GENERIC_MUTEX_NULL_H | |
11 | #define _ASM_GENERIC_MUTEX_NULL_H | |
12 | ||
13 | /* extra parameter only needed for mutex debugging: */ | |
14 | #ifndef __IP__ | |
15 | # define __IP__ | |
16 | #endif | |
17 | ||
18 | #define __mutex_fastpath_lock(count, fail_fn) fail_fn(count __RET_IP__) | |
19 | #define __mutex_fastpath_lock_retval(count, fail_fn) fail_fn(count __RET_IP__) | |
20 | #define __mutex_fastpath_unlock(count, fail_fn) fail_fn(count __RET_IP__) | |
21 | #define __mutex_fastpath_trylock(count, fail_fn) fail_fn(count) | |
22 | #define __mutex_slowpath_needs_to_unlock() 1 | |
23 | ||
24 | #endif |