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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-09-19 14:29:31 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-09-25 10:52:05 +0200 |
| commit | d59b93da5e572703e1a7311c13dd3472a4e56e30 (patch) | |
| tree | 4c75073780f54bc9785433256eee3d6d70eaf868 /arch/s390/include/asm/smp.h | |
| parent | s390/zcrypt: Fixed possible race condition in zcrypt module handling (diff) | |
| download | linux-d59b93da5e572703e1a7311c13dd3472a4e56e30.tar.xz linux-d59b93da5e572703e1a7311c13dd3472a4e56e30.zip | |
s390/rwlock: use directed yield for write-locked rwlocks
Add an owner field to the arch_rwlock_t to be able to pass the timeslice
of a virtual CPU with diagnose 0x9c to the lock owner in case the rwlock
is write-locked. The undirected yield in case the rwlock is acquired
writable but the lock is read-locked is removed.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/smp.h')
| -rw-r--r-- | arch/s390/include/asm/smp.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/s390/include/asm/smp.h b/arch/s390/include/asm/smp.h index 4f1307962a95..762d4f88af5a 100644 --- a/arch/s390/include/asm/smp.h +++ b/arch/s390/include/asm/smp.h @@ -29,7 +29,6 @@ extern int smp_find_processor_id(u16 address); extern int smp_store_status(int cpu); extern int smp_vcpu_scheduled(int cpu); extern void smp_yield_cpu(int cpu); -extern void smp_yield(void); extern void smp_cpu_set_polarization(int cpu, int val); extern int smp_cpu_get_polarization(int cpu); extern void smp_fill_possible_mask(void); @@ -50,7 +49,6 @@ static inline int smp_find_processor_id(u16 address) { return 0; } static inline int smp_store_status(int cpu) { return 0; } static inline int smp_vcpu_scheduled(int cpu) { return 1; } static inline void smp_yield_cpu(int cpu) { } -static inline void smp_yield(void) { } static inline void smp_fill_possible_mask(void) { } #endif /* CONFIG_SMP */ |