diff options
| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2015-03-06 13:58:45 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2015-03-06 14:58:13 +0100 |
| commit | e5db084cd8a9dbbb9b11582686012a294535bba9 (patch) | |
| tree | 3f6fc284f250712a05fd704fabc2b267874c80e1 | |
| parent | rtems_bsd_mutex: SMP support via ISR locks (diff) | |
| download | rtems-libbsd-e5db084cd8a9dbbb9b11582686012a294535bba9.tar.bz2 | |
ZONE(9): Enable per-processor cache for SMP
This prevents a potential deadlock via the Giant lock and is a
performance benefit.
| -rw-r--r-- | freebsd/sys/sys/systm.h | 4 | ||||
| -rw-r--r-- | freebsd/sys/vm/uma_core.c | 12 |
2 files changed, 14 insertions, 2 deletions
diff --git a/freebsd/sys/sys/systm.h b/freebsd/sys/sys/systm.h index 18ca646f..5f894cf6 100644 --- a/freebsd/sys/sys/systm.h +++ b/freebsd/sys/sys/systm.h @@ -209,13 +209,13 @@ void critical_exit(void); static __inline void critical_enter(void) { - _Thread_Disable_dispatch(); + _Thread_Dispatch_disable(); } static __inline void critical_exit(void) { - _Thread_Enable_dispatch(); + _Thread_Dispatch_enable(_Per_CPU_Get()); } #endif /* __rtems__ */ void init_param1(void); diff --git a/freebsd/sys/vm/uma_core.c b/freebsd/sys/vm/uma_core.c index 8a88caaf..f2045d3f 100644 --- a/freebsd/sys/vm/uma_core.c +++ b/freebsd/sys/vm/uma_core.c @@ -89,6 +89,18 @@ __FBSDID("$FreeBSD$"); #include <vm/uma_dbg.h> #include <ddb/ddb.h> +#ifdef __rtems__ + #ifdef RTEMS_SMP + /* + * It is essential that we have a per-processor cache, otherwise the + * critical_enter()/critical_exit() protection would be insufficient. + */ + #undef curcpu + #define curcpu rtems_get_current_processor() + #undef mp_maxid + #define mp_maxid rtems_get_processor_count() + #endif +#endif /* __rtems__ */ /* * This is the zone and keg from which all zones are spawned. The idea is that |