[NET]: Wider use of for_each_*cpu()

In 'net' change the explicit use of for-loops and NR_CPUS into the
general for_each_cpu() or for_each_online_cpu() constructs, as
appropriate.  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>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>

2 files changed, 2 insertions, 8 deletions

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 1dcf7fa1f0fe..e68700f950a5 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1625,12 +1625,9 @@ static int neightbl_fill_info(struct neigh_table *tbl, struct sk_buff *skb,
 
                 memset(&ndst, 0, sizeof(ndst));
 
-                for (cpu = 0; cpu < NR_CPUS; cpu++) {
+                for_each_cpu(cpu) {
                         struct neigh_statistics *st;
 
-                        if (!cpu_possible(cpu))
-                                continue;
-
                         st = per_cpu_ptr(tbl->stats, cpu);
                         ndst.ndts_allocs                += st->allocs;
                         ndst.ndts_destroys              += st->destroys;
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 5f043d346694..00116d8b3b28 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -3065,12 +3065,9 @@ static int __init pg_init(void)
         /* Register us to receive netdevice events */
         register_netdevice_notifier(&pktgen_notifier_block);
         
-        for (cpu = 0; cpu < NR_CPUS ; cpu++) {
+        for_each_online_cpu(cpu) {
                 char buf[30];
 
-                if (!cpu_online(cpu))
-                        continue;
-
                 sprintf(buf, "kpktgend_%i", cpu);
                 pktgen_create_thread(buf, cpu);
         }