diff options
| author | Bruce Evans <bde@FreeBSD.org> | 1994-11-05 22:44:34 +0000 |
|---|---|---|
| committer | Bruce Evans <bde@FreeBSD.org> | 1994-11-05 22:44:34 +0000 |
| commit | c342b9faa3e04301f8f97163db502dc42fc46b6c (patch) | |
| tree | b784f07aafebf63191caeb0b6c013bd68dd76c34 /sys | |
| parent | c897ebc21a1e6943350cbc3faf1058d965c781d8 (diff) | |
Notes
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/amd64/include/cpu.h | 27 | ||||
| -rw-r--r-- | sys/i386/include/cpu.h | 27 |
2 files changed, 38 insertions, 16 deletions
diff --git a/sys/amd64/include/cpu.h b/sys/amd64/include/cpu.h index 71febfd4bef1..e80564af6fe1 100644 --- a/sys/amd64/include/cpu.h +++ b/sys/amd64/include/cpu.h @@ -34,7 +34,7 @@ * SUCH DAMAGE. * * from: @(#)cpu.h 5.4 (Berkeley) 5/9/91 - * $Id: cpu.h,v 1.14 1994/10/15 21:18:11 ache Exp $ + * $Id: cpu.h,v 1.15 1994/10/18 03:37:31 ache Exp $ */ #ifndef _MACHINE_CPU_H_ @@ -59,7 +59,21 @@ #define CLKF_USERMODE(framep) (ISPL((framep)->cf_cs) == SEL_UPL) #define CLKF_INTR(framep) (0) +#if 0 +/* + * XXX splsoftclock() is very broken and barely worth fixing. It doesn't + * turn off the clock bit in imen or in the icu. (This is not a serious + * problem at 100 Hz but it is serious at 16000 Hz for pcaudio. softclock() + * can take more than 62.5 usec so clock interrupts are lost.) It doesn't + * check for pending interrupts being unmasked. clkintr() and Xintr0() + * assume that the ipl is high when hardclock() returns. Our SWI_AST + * handling is efficient enough that little is gained by calling + * softclock() directly. + */ #define CLKF_BASEPRI(framep) (((framep)->cf_ppl & ~SWI_AST_MASK) == 0) +#else +#define CLKF_BASEPRI(framep) (0) +#endif #define CLKF_PC(framep) ((framep)->cf_eip) /* @@ -110,15 +124,12 @@ struct cpu_nameclass { } #ifdef KERNEL -extern int want_resched; /* resched was called */ - -extern int cpu; -extern int cpu_class; +extern int cpu; +extern int cpu_class; extern struct cpu_nameclass i386_cpus[]; +extern int want_resched; /* resched was called */ + int cpu_fork __P((struct proc *, struct proc *)); -int npxdna __P((void)); -void npxexit __P((struct proc *p)); -void resettodr __P((void)); #endif #endif /* !_MACHINE_CPU_H_ */ diff --git a/sys/i386/include/cpu.h b/sys/i386/include/cpu.h index 71febfd4bef1..e80564af6fe1 100644 --- a/sys/i386/include/cpu.h +++ b/sys/i386/include/cpu.h @@ -34,7 +34,7 @@ * SUCH DAMAGE. * * from: @(#)cpu.h 5.4 (Berkeley) 5/9/91 - * $Id: cpu.h,v 1.14 1994/10/15 21:18:11 ache Exp $ + * $Id: cpu.h,v 1.15 1994/10/18 03:37:31 ache Exp $ */ #ifndef _MACHINE_CPU_H_ @@ -59,7 +59,21 @@ #define CLKF_USERMODE(framep) (ISPL((framep)->cf_cs) == SEL_UPL) #define CLKF_INTR(framep) (0) +#if 0 +/* + * XXX splsoftclock() is very broken and barely worth fixing. It doesn't + * turn off the clock bit in imen or in the icu. (This is not a serious + * problem at 100 Hz but it is serious at 16000 Hz for pcaudio. softclock() + * can take more than 62.5 usec so clock interrupts are lost.) It doesn't + * check for pending interrupts being unmasked. clkintr() and Xintr0() + * assume that the ipl is high when hardclock() returns. Our SWI_AST + * handling is efficient enough that little is gained by calling + * softclock() directly. + */ #define CLKF_BASEPRI(framep) (((framep)->cf_ppl & ~SWI_AST_MASK) == 0) +#else +#define CLKF_BASEPRI(framep) (0) +#endif #define CLKF_PC(framep) ((framep)->cf_eip) /* @@ -110,15 +124,12 @@ struct cpu_nameclass { } #ifdef KERNEL -extern int want_resched; /* resched was called */ - -extern int cpu; -extern int cpu_class; +extern int cpu; +extern int cpu_class; extern struct cpu_nameclass i386_cpus[]; +extern int want_resched; /* resched was called */ + int cpu_fork __P((struct proc *, struct proc *)); -int npxdna __P((void)); -void npxexit __P((struct proc *p)); -void resettodr __P((void)); #endif #endif /* !_MACHINE_CPU_H_ */ |