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From: Takahashi Yoshihiro <nyan@FreeBSD.org>
Date: Sun, 3 May 2009 02:37:13 +0000 (UTC)
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Subject: svn commit: r191761 - head/sys/pc98/cbus
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Author: nyan
Date: Sun May  3 02:37:13 2009
New Revision: 191761
URL: http://svn.freebsd.org/changeset/base/191761

Log:
  MFi386: revision 191745
  
    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.

Modified:
  head/sys/pc98/cbus/clock.c

Modified: head/sys/pc98/cbus/clock.c
==============================================================================
--- head/sys/pc98/cbus/clock.c	Sat May  2 22:30:33 2009	(r191760)
+++ head/sys/pc98/cbus/clock.c	Sun May  3 02:37:13 2009	(r191761)
@@ -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_timecoun
 	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);
 }