node_to_cpumask on non NUMA systems is broken if used before all the
processors have been brought up as it returns cpu_online_map, as opposed
to NUMA i386 systems which does it earlier than AP bringup. So return
which processors responded via cpu_present_map and switch to
cpu_online_map during normal runtime. This was found whilst testing a
patch which does node dependent work before APs have all gone online.
Signed-off-by: Zwane Mwaikambo <[email protected]>
Index: linux-2.6.13-rc5-mm1/include/asm-i386/topology.h
===================================================================
RCS file: /home/cvsroot/linux-2.6.13-rc5-mm1/include/asm-i386/topology.h,v
retrieving revision 1.1.1.1
diff -u -p -B -r1.1.1.1 topology.h
--- linux-2.6.13-rc5-mm1/include/asm-i386/topology.h 7 Aug 2005 21:38:36 -0000 1.1.1.1
+++ linux-2.6.13-rc5-mm1/include/asm-i386/topology.h 19 Aug 2005 01:35:07 -0000
@@ -99,6 +99,15 @@ extern unsigned long node_remap_size[];
* above macros here.
*/
+#define node_to_cpumask(node) _node_to_cpumask(node)
+static inline cpumask_t _node_to_cpumask(int node)
+{
+ if (unlikely(system_state == SYSTEM_BOOTING))
+ return cpu_present_map;
+
+ return cpu_online_map;
+}
+
#include <asm-generic/topology.h>
#endif /* CONFIG_NUMA */
-
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