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Initialize P-states to P0 (i.e. the highest frequency).

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This commit is contained in:
jruoho 2011-10-20 06:57:23 +00:00
parent 5d9e77ad94
commit 77e84d0e62
1 changed files with 11 additions and 11 deletions
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22
sys/dev/acpi/acpi_cpu.c
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@ -1,4 +1,4 @@
/* $NetBSD: acpi_cpu.c,v 1.45 2011/10/18 05:08:24 jruoho Exp $ */
/* $NetBSD: acpi_cpu.c,v 1.46 2011/10/20 06:57:23 jruoho Exp $ */
/*-
* Copyright (c) 2010, 2011 Jukka Ruohonen <jruohonen@iki.fi>
@ -27,7 +27,7 @@
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: acpi_cpu.c,v 1.45 2011/10/18 05:08:24 jruoho Exp $");
__KERNEL_RCSID(0, "$NetBSD: acpi_cpu.c,v 1.46 2011/10/20 06:57:23 jruoho Exp $");
#include <sys/param.h>
#include <sys/cpu.h>
@ -249,24 +249,18 @@ acpicpu_once_attach(void)
static int
acpicpu_once_detach(void)
{
struct cpu_info *ci = curcpu();
struct acpicpu_softc *sc;
if (acpicpu_count != 0)
return EDEADLK;
cpufreq_deregister();
if (acpicpu_log != NULL)
sysctl_teardown(&acpicpu_log);
if (acpicpu_sc != NULL) {
sc = acpicpu_sc[ci->ci_acpiid];
if ((sc->sc_flags & ACPICPU_FLAG_P) != 0)
cpufreq_deregister();
if (acpicpu_sc != NULL)
kmem_free(acpicpu_sc, maxcpus * sizeof(*sc));
}
return 0;
}
@ -333,6 +327,12 @@ acpicpu_start(device_t self)
if (cpufreq_register(&cf) != 0)
aprint_error_dev(self, "failed to register cpufreq\n");
else {
/*
* Initialize the states to P0.
*/
cpufreq_set_all(sc->sc_pstate[0].ps_freq);
}
}
}