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Use the new MSR IPI handlers to make it work properly with SMP.

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Tested by Daniel Carosone and Michael Van Elst.
This commit is contained in:
xtraeme 2007-03-20 21:12:22 +00:00
parent 32b7185652
commit b803090b66
1 changed files with 11 additions and 7 deletions
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18
sys/arch/i386/i386/est.c
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@ -1,4 +1,4 @@
/* $NetBSD: est.c,v 1.33 2007/03/18 07:21:41 xtraeme Exp $ */
/* $NetBSD: est.c,v 1.34 2007/03/20 21:12:22 xtraeme Exp $ */
/*
* Copyright (c) 2003 Michael Eriksson.
* All rights reserved.
@ -86,7 +86,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: est.c,v 1.33 2007/03/18 07:21:41 xtraeme Exp $");
__KERNEL_RCSID(0, "$NetBSD: est.c,v 1.34 2007/03/20 21:12:22 xtraeme Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -94,6 +94,8 @@ __KERNEL_RCSID(0, "$NetBSD: est.c,v 1.33 2007/03/18 07:21:41 xtraeme Exp $");
#include <sys/sysctl.h>
#include <sys/once.h>
#include <x86/cpu_msr.h>
#include <machine/cpu.h>
#include <machine/specialreg.h>
@ -852,6 +854,7 @@ static void est_init_main(int);
static int
est_sysctl_helper(SYSCTLFN_ARGS)
{
struct msr_cpu_broadcast mcb;
struct sysctlnode node;
int fq, oldfq, error;
@ -876,16 +879,17 @@ est_sysctl_helper(SYSCTLFN_ARGS)
/* support writing to ...frequency.target */
if (rnode->sysctl_num == est_node_target && fq != oldfq) {
int i;
uint64_t msr;
for (i = est_fqlist->n - 1; i > 0; i--)
if (MSR2MHZ(est_fqlist->table[i], bus_clock) >= fq)
break;
fq = MSR2MHZ(est_fqlist->table[i], bus_clock);
msr = rdmsr(MSR_PERF_CTL);
msr &= ~0xffffULL;
msr |= est_fqlist->table[i];
wrmsr(MSR_PERF_CTL, msr);
mcb.msr_type = MSR_PERF_CTL;
mcb.msr_mask = 0xffffULL;
mcb.msr_value = est_fqlist->table[i];
if (msr_cpu_broadcast(&mcb, MSR_CPU_BROADCAST_WRITE))
return EINVAL;
}
return 0;