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Index: sys/arm/at91/at91_rst.c
===================================================================
--- sys/arm/at91/at91_rst.c
+++ sys/arm/at91/at91_rst.c
@@ -124,7 +124,7 @@
at91_rst_sc = sc = device_get_softc(dev);
sc->sc_dev = dev;
- callout_init(&sc->tick_ch, 0);
+ callout_init(&sc->tick_ch, 1);
rid = 0;
sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
Index: sys/dev/syscons/syscons.c
===================================================================
--- sys/dev/syscons/syscons.c
+++ sys/dev/syscons/syscons.c
@@ -3858,22 +3858,28 @@
case RBT:
#ifndef SC_DISABLE_REBOOT
- if (enable_reboot && !(flags & SCGETC_CN))
+ if (enable_reboot && !(flags & SCGETC_CN)) {
+ mtx_unlock(&Giant);
shutdown_nice(0);
+ }
#endif
break;
case HALT:
#ifndef SC_DISABLE_REBOOT
- if (enable_reboot && !(flags & SCGETC_CN))
+ if (enable_reboot && !(flags & SCGETC_CN)) {
+ mtx_unlock(&Giant);
shutdown_nice(RB_HALT);
+ }
#endif
break;
case PDWN:
#ifndef SC_DISABLE_REBOOT
- if (enable_reboot && !(flags & SCGETC_CN))
+ if (enable_reboot && !(flags & SCGETC_CN)) {
+ mtx_unlock(&Giant);
shutdown_nice(RB_HALT|RB_POWEROFF);
+ }
#endif
break;
Index: sys/kern/init_main.c
===================================================================
--- sys/kern/init_main.c
+++ sys/kern/init_main.c
@@ -703,10 +703,6 @@
struct thread *td;
struct proc *p;
- mtx_lock(&Giant);
-
- GIANT_REQUIRED;
-
TSENTER(); /* Here so we don't overlap with mi_startup. */
td = curthread;
@@ -801,7 +797,6 @@
* to user mode as init!
*/
if ((error = sys_execve(td, &args)) == EJUSTRETURN) {
- mtx_unlock(&Giant);
TSEXIT();
return;
}
Index: sys/kern/kern_shutdown.c
===================================================================
--- sys/kern/kern_shutdown.c
+++ sys/kern/kern_shutdown.c
@@ -268,13 +268,10 @@
if (error == 0)
error = priv_check(td, PRIV_REBOOT);
if (error == 0) {
- if (uap->opt & RB_REROOT) {
+ if (uap->opt & RB_REROOT)
error = kern_reroot();
- } else {
- mtx_lock(&Giant);
+ else
kern_reboot(uap->opt);
- mtx_unlock(&Giant);
- }
}
return (error);
}
Index: sys/kern/vfs_bio.c
===================================================================
--- sys/kern/vfs_bio.c
+++ sys/kern/vfs_bio.c
@@ -1240,25 +1240,20 @@
#ifdef PREEMPTION
/*
- * Drop Giant and spin for a while to allow
- * interrupt threads to run.
+ * Spin for a while to allow interrupt threads to run.
*/
- DROP_GIANT();
DELAY(50000 * iter);
- PICKUP_GIANT();
#else
/*
- * Drop Giant and context switch several times to
- * allow interrupt threads to run.
+ * Context switch several times to allow interrupt
+ * threads to run.
*/
- DROP_GIANT();
for (subiter = 0; subiter < 50 * iter; subiter++) {
thread_lock(curthread);
mi_switch(SW_VOL, NULL);
thread_unlock(curthread);
DELAY(1000);
}
- PICKUP_GIANT();
#endif
}
printf("\n");
Index: sys/kern/vfs_mountroot.c
===================================================================
--- sys/kern/vfs_mountroot.c
+++ sys/kern/vfs_mountroot.c
@@ -579,9 +579,7 @@
if (root_mount_mddev != -1) {
mdio->md_unit = root_mount_mddev;
- DROP_GIANT();
error = kern_ioctl(td, fd, MDIOCDETACH, (void *)mdio);
- PICKUP_GIANT();
/* Ignore errors. We don't care. */
root_mount_mddev = -1;
}
@@ -590,9 +588,7 @@
mdio->md_options = MD_AUTOUNIT | MD_READONLY;
mdio->md_mediasize = sb.st_size;
mdio->md_unit = 0;
- DROP_GIANT();
error = kern_ioctl(td, fd, MDIOCATTACH, (void *)mdio);
- PICKUP_GIANT();
if (error)
goto out;
@@ -601,9 +597,7 @@
mdio->md_file = NULL;
mdio->md_options = 0;
mdio->md_mediasize = 0;
- DROP_GIANT();
error = kern_ioctl(td, fd, MDIOCDETACH, (void *)mdio);
- PICKUP_GIANT();
/* Ignore errors. We don't care. */
error = ERANGE;
goto out;
@@ -960,9 +954,7 @@
curfail = 0;
while (1) {
- DROP_GIANT();
g_waitidle();
- PICKUP_GIANT();
mtx_lock(&root_holds_mtx);
if (LIST_EMPTY(&root_holds)) {
mtx_unlock(&root_holds_mtx);
@@ -1004,9 +996,7 @@
* Note that we must wait for GEOM to finish reconfiguring itself,
* eg for geom_part(4) to finish tasting.
*/
- DROP_GIANT();
g_waitidle();
- PICKUP_GIANT();
if (parse_mount_dev_present(dev))
return (0);
@@ -1038,6 +1028,8 @@
time_t timebase;
int error;
+ mtx_assert(&Giant, MA_NOTOWNED);
+
TSENTER();
td = curthread;
Index: sys/sparc64/pci/psycho.c
===================================================================
--- sys/sparc64/pci/psycho.c
+++ sys/sparc64/pci/psycho.c
@@ -810,6 +810,7 @@
return;
shutdown++;
printf("Power Failure Detected: Shutting down NOW.\n");
+ mtx_unlock(&Giant);
shutdown_nice(RB_POWEROFF);
}
@@ -823,6 +824,7 @@
return;
shutdown++;
printf("DANGER: OVER TEMPERATURE detected.\nShutting down NOW.\n");
+ mtx_unlock(&Giant);
shutdown_nice(RB_POWEROFF);
}
Index: sys/sparc64/sbus/sbus.c
===================================================================
--- sys/sparc64/sbus/sbus.c
+++ sys/sparc64/sbus/sbus.c
@@ -411,7 +411,7 @@
INTIGN(vec = rman_get_start(sc->sc_ot_ires)) != sc->sc_ign ||
INTVEC(SYSIO_READ8(sc, SBR_THERM_INT_MAP)) != vec ||
intr_vectors[vec].iv_ic != &sbus_ic ||
- bus_setup_intr(dev, sc->sc_ot_ires, INTR_TYPE_MISC | INTR_BRIDGE,
+ bus_setup_intr(dev, sc->sc_ot_ires, INTR_TYPE_MISC | INTR_BRIDGE | INTR_MPSAFE,
NULL, sbus_overtemp, sc, &sc->sc_ot_ihand) != 0)
panic("%s: failed to set up temperature interrupt", __func__);
i = 3;
@@ -421,7 +421,7 @@
INTIGN(vec = rman_get_start(sc->sc_pf_ires)) != sc->sc_ign ||
INTVEC(SYSIO_READ8(sc, SBR_POWER_INT_MAP)) != vec ||
intr_vectors[vec].iv_ic != &sbus_ic ||
- bus_setup_intr(dev, sc->sc_pf_ires, INTR_TYPE_MISC | INTR_BRIDGE,
+ bus_setup_intr(dev, sc->sc_pf_ires, INTR_TYPE_MISC | INTR_BRIDGE | INTR_MPSAFE,
NULL, sbus_pwrfail, sc, &sc->sc_pf_ihand) != 0)
panic("%s: failed to set up power fail interrupt", __func__);

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