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Add back in obtaining/releasing Giant around interrupt handlers.

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This commit is contained in:
jhb 2000-09-13 18:21:33 +00:00
parent b67788a71f
commit b563a12289
1 changed files with 10 additions and 0 deletions
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10
sys/alpha/alpha/interrupt.c
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@ -93,6 +93,7 @@ interrupt(a0, a1, a2, framep)
struct proc* p = curproc;
if (!p) p = &proc0;
if ((caddr_t) framep < (caddr_t) p->p_addr + 1024) {
mtx_enter(&Giant, MTX_DEF);
panic("possible stack overflow\n");
}
}
@ -113,6 +114,7 @@ interrupt(a0, a1, a2, framep)
return;
}
mtx_enter(&Giant, MTX_DEF);
cnt.v_intr++;
#ifdef EVCNT_COUNTERS
clock_intr_evcnt.ev_count++;
@ -125,24 +127,31 @@ interrupt(a0, a1, a2, framep)
if((++schedclk2 & 0x7) == 0)
statclock((struct clockframe *)framep);
}
mtx_exit(&Giant, MTX_DEF);
break;
case ALPHA_INTR_ERROR: /* Machine Check or Correctable Error */
mtx_enter(&Giant, MTX_DEF);
a0 = alpha_pal_rdmces();
if (platform.mcheck_handler)
(*platform.mcheck_handler)(a0, framep, a1, a2);
else
machine_check(a0, framep, a1, a2);
mtx_exit(&Giant, MTX_DEF);
break;
case ALPHA_INTR_DEVICE: /* I/O device interrupt */
mtx_enter(&Giant, MTX_DEF);
cnt.v_intr++;
if (platform.iointr)
(*platform.iointr)(framep, a1);
mtx_exit(&Giant, MTX_DEF);
break;
case ALPHA_INTR_PERF: /* interprocessor interrupt */
mtx_enter(&Giant, MTX_DEF);
perf_irq(a1, framep);
mtx_exit(&Giant, MTX_DEF);
break;
case ALPHA_INTR_PASSIVE:
@ -152,6 +161,7 @@ interrupt(a0, a1, a2, framep)
break;
default:
mtx_enter(&Giant, MTX_DEF);
panic("unexpected interrupt: type 0x%lx vec 0x%lx a2 0x%lx\n",
a0, a1, a2);
/* NOTREACHED */