diff options
Diffstat (limited to 'sys/conf')
| -rw-r--r-- | sys/conf/NOTES | 6 | ||||
| -rw-r--r-- | sys/conf/options | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/sys/conf/NOTES b/sys/conf/NOTES index 8e2c447..88086cb 100644 --- a/sys/conf/NOTES +++ b/sys/conf/NOTES @@ -202,6 +202,12 @@ options SMP # Symmetric MultiProcessor Kernel # to disable it. options NO_ADAPTIVE_MUTEXES +# ADAPTIVE_RWLOCKS changes the behavior of reader/writer locks to spin +# if the thread that currently owns the rwlock is executing on another +# CPU. This behaviour is enabled by default, so this option can be used +# to disable it. +options NO_ADAPTIVE_RWLOCKS + # ADAPTIVE_GIANT causes the Giant lock to also be made adaptive when # running without NO_ADAPTIVE_MUTEXES. Normally, because Giant is assumed # to be held for extended periods, contention on Giant will cause a thread diff --git a/sys/conf/options b/sys/conf/options index 63de061..0496857 100644 --- a/sys/conf/options +++ b/sys/conf/options @@ -124,6 +124,7 @@ MFI_DECODE_LOG opt_mfi.h MPROF_BUFFERS opt_mprof.h MPROF_HASH_SIZE opt_mprof.h MUTEX_WAKE_ALL +NO_ADAPTIVE_RWLOCKS NSWBUF_MIN opt_swap.h PANIC_REBOOT_WAIT_TIME opt_panic.h PPC_DEBUG opt_ppc.h |
