diff options
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-10-01 02:27:45 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-01 03:39:22 -0400 |
| commit | 3c1fcfe229e99752c74efb945a4a3f560be04204 (patch) | |
| tree | 44085d9b599e06a92426141811a6f712beac17aa /include/asm-s390/setup.h | |
| parent | cdc39363d33506b0e067d41fc91f89d186bdf7f7 (diff) | |
[PATCH] Directed yield: direct yield of spinlocks for s390.
Use the new diagnose 0x9c in the spinlock implementation for s390. It
yields the remaining timeslice of the virtual cpu that tries to acquire a
lock to the virtual cpu that is the current holder of the lock.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-s390/setup.h')
| -rw-r--r-- | include/asm-s390/setup.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-s390/setup.h b/include/asm-s390/setup.h index f1959732b6fd..5d72eda8a11b 100644 --- a/include/asm-s390/setup.h +++ b/include/asm-s390/setup.h | |||
| @@ -39,6 +39,7 @@ extern unsigned long machine_flags; | |||
| 39 | #define MACHINE_IS_P390 (machine_flags & 4) | 39 | #define MACHINE_IS_P390 (machine_flags & 4) |
| 40 | #define MACHINE_HAS_MVPG (machine_flags & 16) | 40 | #define MACHINE_HAS_MVPG (machine_flags & 16) |
| 41 | #define MACHINE_HAS_IDTE (machine_flags & 128) | 41 | #define MACHINE_HAS_IDTE (machine_flags & 128) |
| 42 | #define MACHINE_HAS_DIAG9C (machine_flags & 256) | ||
| 42 | 43 | ||
| 43 | #ifndef __s390x__ | 44 | #ifndef __s390x__ |
| 44 | #define MACHINE_HAS_IEEE (machine_flags & 2) | 45 | #define MACHINE_HAS_IEEE (machine_flags & 2) |