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Use a mutex(9) rather than a rwlock(9), it's cheaper.

This commit is contained in:
xtraeme 2007-10-13 00:56:16 +00:00
parent 6673d94694
commit 112f996fbc
1 changed files with 7 additions and 7 deletions
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14
sys/dev/acpi/aiboost.c
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@ -1,4 +1,4 @@
/* $NetBSD: aiboost.c,v 1.13 2007/08/30 18:29:11 xtraeme Exp $ */
/* $NetBSD: aiboost.c,v 1.14 2007/10/13 00:56:16 xtraeme Exp $ */
/*-
* Copyright (c) 2007 Juan Romero Pardines
@ -28,13 +28,13 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: aiboost.c,v 1.13 2007/08/30 18:29:11 xtraeme Exp $");
__KERNEL_RCSID(0, "$NetBSD: aiboost.c,v 1.14 2007/10/13 00:56:16 xtraeme Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/rwlock.h>
#include <sys/mutex.h>
#include <dev/acpi/acpica.h>
#include <dev/acpi/acpireg.h>
@ -67,7 +67,7 @@ struct aiboost_softc {
struct aiboost_comp *sc_aitemp, *sc_aivolt, *sc_aifan;
struct sysmon_envsys sc_sme;
struct envsys_data sc_data[AIBOOST_MAX_SENSORS];
krwlock_t sc_rwlock;
kmutex_t sc_mtx;
};
static ACPI_STATUS aiboost_getcomp(ACPI_HANDLE *,
@ -134,7 +134,7 @@ aiboost_acpi_attach(struct device *parent, struct device *self, void *aux)
if (ACPI_FAILURE(aiboost_getcomp(handl, "FSIF", &sc->sc_aifan)))
return;
rw_init(&sc->sc_rwlock);
mutex_init(&sc->sc_mtx, MUTEX_DEFAULT, IPL_NONE);
/* Initialize sensors */
maxsens = sc->sc_aivolt->num + sc->sc_aitemp->num + sc->sc_aifan->num;
DPRINTF(("%s: maxsens=%d\n", __func__, maxsens));
@ -208,7 +208,7 @@ aiboost_refresh_sensors(struct aiboost_softc *sc, envsys_data_t *edata)
ACPI_HANDLE *h = sc->sc_node->ad_handle;
int i, j, val;
rw_enter(&sc->sc_rwlock, RW_READER);
mutex_enter(&sc->sc_mtx);
j = 0;
i = edata->sensor; /* sensor number */
@ -253,7 +253,7 @@ aiboost_refresh_sensors(struct aiboost_softc *sc, envsys_data_t *edata)
edata->state = ENVSYS_SVALID;
out:
rw_exit(&sc->sc_rwlock);
mutex_exit(&sc->sc_mtx);
}
static int