PERFORCE change 100691 for review
Kip Macy
kmacy at FreeBSD.org
Thu Jul 6 05:33:41 UTC 2006
http://perforce.freebsd.org/chv.cgi?CH=100691
Change 100691 by kmacy at kmacy_storage:sun4v_work_stable on 2006/07/06 05:32:43
fix config
add some debug info to pmap_ipi
Affected files ...
.. //depot/projects/kmacy_sun4v_stable/src/sys/sun4v/conf/GENERIC#5 edit
.. //depot/projects/kmacy_sun4v_stable/src/sys/sun4v/sun4v/pmap.c#8 edit
Differences ...
==== //depot/projects/kmacy_sun4v_stable/src/sys/sun4v/conf/GENERIC#5 (text+ko) ====
@@ -211,4 +211,4 @@
device ccd
options SPIN_PROFILING
-options HZ=100+options HZ=100
==== //depot/projects/kmacy_sun4v_stable/src/sys/sun4v/sun4v/pmap.c#8 (text+ko) ====
@@ -1218,12 +1218,13 @@
pmap_ipi(pmap_t pmap, char *func, uint64_t arg1, uint64_t arg2)
{
- int i, cpu_count;
+ int i, cpu_count, retried;
u_int cpus;
cpumask_t cpumask, active, curactive;
cpumask_t active_total, ackmask;
uint16_t *cpulist;
+ retried = 0;
if (!smp_started)
return (0);
@@ -1273,9 +1274,23 @@
while (ackmask != curactive) {
membar(Sync);
i++;
- if (i > 10000000)
- panic(" ackmask=0x%x active=0x%x\n", ackmask, curactive);
+ if (i > 10000000) {
+ uint64_t cpu_state;
+ printf("cpu with cpumask=0x%x appears to not be responding to ipis\n",
+ curactive & ~ackmask);
+
+ hv_cpu_state((uint64_t)ffs64(curactive & ~ackmask), &cpu_state);
+ printf("cpu_state of %ld is %ld\n", ffs64(curactive & ~ackmask), cpu_state);
+ if (!retried) {
+ printf("I'm going to send off another ipi just to confirm that it isn't a memory barrier bug\n"
+ "and then I'm going to panic\n");
+
+ retried = 1;
+ goto retry;
+ }
+ panic(" ackmask=0x%x active=0x%x\n", ackmask, curactive);
+ }
}
active_total |= curactive;
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