Author: avg
Date: Fri Nov 26 17:31:02 2010
New Revision: 215876
URL: http://svn.freebsd.org/changeset/base/215876
Log:
MFC r215398: hwpstate: use CPU_FOREACH when binding to all available
processors
Modified:
stable/8/sys/x86/cpufreq/hwpstate.c
Directory Properties:
stable/8/sys/ (props changed)
stable/8/sys/amd64/include/xen/ (props changed)
stable/8/sys/cddl/contrib/opensolaris/ (props changed)
stable/8/sys/contrib/dev/acpica/ (props changed)
stable/8/sys/contrib/pf/ (props changed)
Modified: stable/8/sys/x86/cpufreq/hwpstate.c
==============================================================================
--- stable/8/sys/x86/cpufreq/hwpstate.c Fri Nov 26 17:14:38 2010
(r215875)
+++ stable/8/sys/x86/cpufreq/hwpstate.c Fri Nov 26 17:31:02 2010
(r215876)
@@ -157,7 +157,6 @@ DRIVER_MODULE(hwpstate, cpu, hwpstate_dr
static int
hwpstate_goto_pstate(device_t dev, int pstate)
{
- struct pcpu *pc;
int i;
uint64_t msr;
int j;
@@ -171,18 +170,15 @@ hwpstate_goto_pstate(device_t dev, int p
if(limit > id)
id = limit;
- error = 0;
/*
* We are going to the same Px-state on all cpus.
+ * Probably should take _PSD into account.
*/
- for (i = 0; i < mp_ncpus; i++) {
- /* Find each cpu. */
- pc = pcpu_find(i);
- if (pc == NULL)
- return (ENXIO);
- thread_lock(curthread);
+ error = 0;
+ CPU_FOREACH(i) {
/* Bind to each cpu. */
- sched_bind(curthread, pc->pc_cpuid);
+ thread_lock(curthread);
+ sched_bind(curthread, i);
thread_unlock(curthread);
HWPSTATE_DEBUG(dev, "setting P%d-state on cpu%d\n",
id, PCPU_GET(cpuid));
@@ -204,10 +200,10 @@ hwpstate_goto_pstate(device_t dev, int p
HWPSTATE_DEBUG(dev, "error: loop is not enough.\n");
error = ENXIO;
}
- thread_lock(curthread);
- sched_unbind(curthread);
- thread_unlock(curthread);
}
+ thread_lock(curthread);
+ sched_unbind(curthread);
+ thread_unlock(curthread);
return (error);
}
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