svn commit: r206897 - head/sys/kern
Attilio Rao
attilio at FreeBSD.org
Tue Apr 20 12:22:06 UTC 2010
Author: attilio
Date: Tue Apr 20 12:22:06 2010
New Revision: 206897
URL: http://svn.freebsd.org/changeset/base/206897
Log:
Fix compilation in the !SMP case.
Keep the interrupts disabled in order to avoid preemption problems.
Reported by: tinderbox, b.f. <bf1783 at googlemail dot com>
MFC: 2 weeks
X-MFC: r206878
Modified:
head/sys/kern/kern_shutdown.c
Modified: head/sys/kern/kern_shutdown.c
==============================================================================
--- head/sys/kern/kern_shutdown.c Tue Apr 20 12:07:16 2010 (r206896)
+++ head/sys/kern/kern_shutdown.c Tue Apr 20 12:22:06 2010 (r206897)
@@ -496,8 +496,14 @@ shutdown_reset(void *junk, int howto)
* generally, threads busy-waiting, with this spinlock held,
* and waiting for responses by threads on other CPUs
* (ie. smp_tlb_shootdown()).
+ *
+ * For the !SMP case it just needs to handle the former problem.
*/
+#ifdef SMP
mtx_lock_spin(&smp_ipi_mtx);
+#else
+ spinlock_enter();
+#endif
/* cpu_boot(howto); */ /* doesn't do anything at the moment */
cpu_reset();
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