[src/trunk]: src/sys/arch/sparc/sparc add some #if 0'ed code to turn the xcal...

[mrg <mrg%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/529d6642253a
branches:  trunk
changeset: 762393:529d6642253a
user:      mrg <mrg%NetBSD.org@localhost>
date:      Sun Feb 20 11:41:20 2011 +0000

description:
add some #if 0'ed code to turn the xcall() timeout into a hard panic.
probably put this under DIAGNOSTIC when it is later properly working.

diffstat:

 sys/arch/sparc/sparc/cpu.c |  28 ++++++++++++++++++++++++++--
 1 files changed, 26 insertions(+), 2 deletions(-)

diffs (49 lines):

diff -r 91edf75cf8c5 -r 529d6642253a sys/arch/sparc/sparc/cpu.c
--- a/sys/arch/sparc/sparc/cpu.c        Sun Feb 20 11:26:33 2011 +0000
+++ b/sys/arch/sparc/sparc/cpu.c        Sun Feb 20 11:41:20 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cpu.c,v 1.231 2011/02/20 10:02:01 mrg Exp $ */
+/*     $NetBSD: cpu.c,v 1.232 2011/02/20 11:41:20 mrg Exp $ */
 
 /*
  * Copyright (c) 1996
@@ -52,7 +52,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.231 2011/02/20 10:02:01 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.232 2011/02/20 11:41:20 mrg Exp $");
 
 #include "opt_multiprocessor.h"
 #include "opt_lockdebug.h"
@@ -742,6 +742,30 @@
        if (i < 0)
                printf_nolog("%s\n", errbuf);
        mutex_spin_exit(&xpmsg_mutex);
+
+#if 0
+       if (!timeout)
+               return;
+
+       /*
+        * Let's make this a hard panic for now, and figure out why it happens.
+        *
+        * We call mp_pause_cpus() so we can capture their state *now* as opposed
+        * to after we've written all the below to the console.
+        */
+#ifdef DDB
+       mp_pause_cpus_ddb();
+#else
+       mp_pause_cpus();
+#endif
+       printf_nolog("xcall(cpu%d,%p) from %p: couldn't ping cpus:",
+           cpu_number(), fasttrap ? trap : func, __builtin_return_address(0));
+       for (CPU_INFO_FOREACH(n, cpi))
+               if ((failed_cpuset & (1 << n)) == 0)
+                       printf_nolog(" cpu%d", cpi->ci_cpuid);
+       printf_nolog("%s\n", i == 10000000 ? " [hard 10M timeout]" : "");
+       panic("failed to ping cpus");
+#endif
 }
 
 /*