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MFi386: revision 191745

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Add support for using i8254 and rtc timers as event sources for i386 SMP
  system. Redistribute hard-/stat-/profclock events to other CPUs using IPI.
This commit is contained in:
nyan 2009-05-03 02:37:13 +00:00
parent c2533a5a87
commit 4c45d5b45c
1 changed files with 35 additions and 1 deletions
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36
sys/pc98/cbus/clock.c
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@ -59,6 +59,7 @@ __FBSDID("$FreeBSD$");
#include <sys/timetc.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/smp.h>
#include <sys/sysctl.h>
#include <machine/clock.h>
@ -71,6 +72,7 @@ __FBSDID("$FreeBSD$");
#endif
#include <machine/ppireg.h>
#include <machine/timerreg.h>
#include <machine/smp.h>
#include <pc98/pc98/pc98_machdep.h>
#ifdef DEV_ISA
@ -123,6 +125,31 @@ static struct timecounter i8254_timecounter = {
0 /* quality */
};
int
hardclockintr(struct trapframe *frame)
{
if (PCPU_GET(cpuid) == 0)
hardclock(TRAPF_USERMODE(frame), TRAPF_PC(frame));
else
hardclock_cpu(TRAPF_USERMODE(frame));
return (FILTER_HANDLED);
}
int
statclockintr(struct trapframe *frame)
{
return (FILTER_HANDLED);
}
int
profclockintr(struct trapframe *frame)
{
return (FILTER_HANDLED);
}
static int
clkintr(struct trapframe *frame)
{
@ -151,7 +178,14 @@ clkintr(struct trapframe *frame)
(*lapic_cyclic_clock_func[cpu])(frame);
#endif
hardclock(TRAPF_USERMODE(frame), TRAPF_PC(frame));
#ifdef SMP
if (smp_started)
ipi_all_but_self(IPI_HARDCLOCK);
#endif
if (PCPU_GET(cpuid) == 0)
hardclock(TRAPF_USERMODE(frame), TRAPF_PC(frame));
else
hardclock_cpu(TRAPF_USERMODE(frame));
return (FILTER_HANDLED);
}