Author: cognet
Date: Tue Jan 15 22:09:11 2013
New Revision: 245477
URL: http://svnweb.freebsd.org/changeset/base/245477
Log:
Only spin on the blocked_lock for SCHED_ULE+SMP, as it's done on the other
arches.
Modified:
head/sys/arm/arm/swtch.S
Modified: head/sys/arm/arm/swtch.S
==============================================================================
--- head/sys/arm/arm/swtch.S Tue Jan 15 22:08:17 2013 (r245476)
+++ head/sys/arm/arm/swtch.S Tue Jan 15 22:09:11 2013 (r245477)
@@ -79,6 +79,7 @@
*/
#include "assym.s"
+#include "opt_sched.h"
#include <machine/asm.h>
#include <machine/asmacros.h>
@@ -428,6 +429,7 @@ ENTRY(cpu_switch)
/* Release the old thread */
str r6, [r4, #TD_LOCK]
+#if defined(SCHED_ULE) && defined(SMP)
ldr r6, .Lblocked_lock
GET_CURTHREAD_PTR(r3)
@@ -435,6 +437,7 @@ ENTRY(cpu_switch)
ldr r4, [r3, #TD_LOCK]
cmp r4, r6
beq 1b
+#endif
/* XXXSCW: Safe to re-enable FIQs here */
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