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ZONE(9): Enable per-processor cache for SMP

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This prevents a potential deadlock via the Giant lock and is a
performance benefit.
This commit is contained in:
Sebastian Huber
2015-03-06 13:58:45 +01:00
parent 8ed1b181aa
commit e5db084cd8
2 changed files with 14 additions and 2 deletions
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4
freebsd/sys/sys/systm.h
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@@ -209,13 +209,13 @@ void critical_exit(void);
static __inline void static __inline void
critical_enter(void) critical_enter(void)
{ {
_Thread_Disable_dispatch(); _Thread_Dispatch_disable();
} }
static __inline void static __inline void
critical_exit(void) critical_exit(void)
{ {
_Thread_Enable_dispatch(); _Thread_Dispatch_enable(_Per_CPU_Get());
} }
#endif /* __rtems__ */ #endif /* __rtems__ */
void init_param1(void); void init_param1(void);

12
freebsd/sys/vm/uma_core.c
View File

@@ -89,6 +89,18 @@ __FBSDID("$FreeBSD$");
#include <vm/uma_dbg.h> #include <vm/uma_dbg.h>
#include <ddb/ddb.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 * This is the zone and keg from which all zones are spawned. The idea is that