* [PATCH] 2.6.14-rc4: more wider use of for_each_cpu_mask() in arch/ia64
@ 2005-10-13 19:01 hawkes
0 siblings, 0 replies; only message in thread
From: hawkes @ 2005-10-13 19:01 UTC (permalink / raw)
To: linux-ia64
In arch/ia64 change the explicit use of a for-loop using NR_CPUS into the
general for_each_online_cpu() construct. This widens the scope of potential
future optimizations of the general constructs, as well as takes advantage
of the existing optimizations of first_cpu() and next_cpu(), which is
advantageous when the true CPU count is much smaller than NR_CPUS.
Signed-off-by: John Hawkes <hawkes@sgi.com>
Index: linux/arch/ia64/kernel/mca.c
=================================--- linux.orig/arch/ia64/kernel/mca.c 2005-10-11 09:58:56.000000000 -0700
+++ linux/arch/ia64/kernel/mca.c 2005-10-11 10:01:22.000000000 -0700
@@ -508,9 +508,7 @@
int cpu;
/* Clear the Rendez checkin flag for all cpus */
- for(cpu = 0; cpu < NR_CPUS; cpu++) {
- if (!cpu_online(cpu))
- continue;
+ for_each_online_cpu(cpu) {
if (ia64_mc_info.imi_rendez_checkin[cpu] = IA64_MCA_RENDEZ_CHECKIN_DONE)
ia64_mca_wakeup(cpu);
}
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2005-10-13 19:01 [PATCH] 2.6.14-rc4: more wider use of for_each_cpu_mask() in arch/ia64 hawkes
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