diff options
| author | jasone <jasone@FreeBSD.org> | 2000-09-07 01:33:02 +0000 |
|---|---|---|
| committer | jasone <jasone@FreeBSD.org> | 2000-09-07 01:33:02 +0000 |
| commit | 769e0f974d8929599ba599ac496510fffc90ff34 (patch) | |
| tree | 9387522900085835de81e7830e570ef3f6b3ea80 /sys/sys/smp.h | |
| parent | acf1927de02afda4855ec278b1128fd9446405ea (diff) | |
| download | FreeBSD-src-769e0f974d8929599ba599ac496510fffc90ff34.zip FreeBSD-src-769e0f974d8929599ba599ac496510fffc90ff34.tar.gz | |
Major update to the way synchronization is done in the kernel. Highlights
include:
* Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The
alpha port is still in transition and currently uses both.)
* Per-CPU idle processes.
* Interrupts are run in their own separate kernel threads and can be
preempted (i386 only).
Partially contributed by: BSDi (BSD/OS)
Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
Diffstat (limited to 'sys/sys/smp.h')
| -rw-r--r-- | sys/sys/smp.h | 38 |
1 files changed, 4 insertions, 34 deletions
diff --git a/sys/sys/smp.h b/sys/sys/smp.h index 69b716b..20d4fa3 100644 --- a/sys/sys/smp.h +++ b/sys/sys/smp.h @@ -15,6 +15,9 @@ #ifdef _KERNEL +#ifdef I386_CPU +#error SMP not supported with I386_CPU +#endif #if defined(SMP) && !defined(APIC_IO) # error APIC_IO required for SMP, add "options APIC_IO" to your config file. #endif /* SMP && !APIC_IO */ @@ -57,23 +60,6 @@ extern int bootMP_size; /* functions in mpboot.s */ void bootMP __P((void)); -/* global data in mplock.s */ -extern u_int mp_lock; -extern u_int isr_lock; -#ifdef RECURSIVE_MPINTRLOCK -extern u_int mpintr_lock; -#endif /* RECURSIVE_MPINTRLOCK */ - -/* functions in mplock.s */ -void get_mplock __P((void)); -void rel_mplock __P((void)); -int try_mplock __P((void)); -#ifdef RECURSIVE_MPINTRLOCK -void get_mpintrlock __P((void)); -void rel_mpintrlock __P((void)); -int try_mpintrlock __P((void)); -#endif /* RECURSIVE_MPINTRLOCK */ - /* global data in apic_vector.s */ extern volatile u_int stopped_cpus; extern volatile u_int started_cpus; @@ -185,23 +171,7 @@ extern int smp_started; extern volatile int smp_idle_loops; #endif /* !LOCORE */ -#else /* !SMP && !APIC_IO */ - -/* - * Create dummy MP lock empties - */ - -static __inline void -get_mplock(void) -{ -} - -static __inline void -rel_mplock(void) -{ -} - -#endif +#endif /* SMP && !APIC_IO */ #endif /* _KERNEL */ #endif /* _MACHINE_SMP_H_ */ |
