Title: [9032] trunk/arch/blackfin/mach-bf561/atomic.S: Bug[#6044] add inline comments
- Revision
- 9032
- Author
- sonicz
- Date
- 2010-07-30 02:00:24 -0400 (Fri, 30 Jul 2010)
Log Message
Bug[#6044] add inline comments
Modified Paths
Diff
Modified: trunk/arch/blackfin/mach-bf561/atomic.S (9031 => 9032)
--- trunk/arch/blackfin/mach-bf561/atomic.S 2010-07-30 05:45:46 UTC (rev 9031)
+++ trunk/arch/blackfin/mach-bf561/atomic.S 2010-07-30 06:00:24 UTC (rev 9032)
@@ -71,6 +71,11 @@
SSYNC(r2);
jump .Lretry_corelock_noflush
.Ldone_corelock_noflush:
+ /*
+ * SMP kgdb runs into dead loop without NOP here, when one core
+ * single steps over get_core_lock_noflush and the other executes
+ * get_core_lock as a slave node.
+ */
nop;
CSYNC(r2);
rts;
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