aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/loopback.c
diff options
context:
space:
mode:
authorAndrew Morton <akpm@osdl.org>2006-03-23 06:01:05 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-23 10:38:17 -0500
commit394e3902c55e667945f6f1c2bdbc59842cce70f7 (patch)
treef4bca0bdc0c291fda6f6949265aacec0669b9084 /drivers/net/loopback.c
parent63872f87a151413100678f110d1556026002809e (diff)
[PATCH] more for_each_cpu() conversions
When we stop allocating percpu memory for not-possible CPUs we must not touch the percpu data for not-possible CPUs at all. The correct way of doing this is to test cpu_possible() or to use for_each_cpu(). This patch is a kernel-wide sweep of all instances of NR_CPUS. I found very few instances of this bug, if any. But the patch converts lots of open-coded test to use the preferred helper macros. Cc: Mikael Starvik <starvik@axis.com> Cc: David Howells <dhowells@redhat.com> Acked-by: Kyle McMartin <kyle@parisc-linux.org> Cc: Anton Blanchard <anton@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: Andi Kleen <ak@muc.de> Cc: Christian Zankel <chris@zankel.net> Cc: Philippe Elie <phil.el@wanadoo.fr> Cc: Nathan Scott <nathans@sgi.com> Cc: Jens Axboe <axboe@suse.de> Cc: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/net/loopback.c')
-rw-r--r--drivers/net/loopback.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c
index 690a1aae0b34..0c13795dca38 100644
--- a/drivers/net/loopback.c
+++ b/drivers/net/loopback.c
@@ -172,11 +172,9 @@ static struct net_device_stats *get_stats(struct net_device *dev)
172 172
173 memset(stats, 0, sizeof(struct net_device_stats)); 173 memset(stats, 0, sizeof(struct net_device_stats));
174 174
175 for (i=0; i < NR_CPUS; i++) { 175 for_each_cpu(i) {
176 struct net_device_stats *lb_stats; 176 struct net_device_stats *lb_stats;
177 177
178 if (!cpu_possible(i))
179 continue;
180 lb_stats = &per_cpu(loopback_stats, i); 178 lb_stats = &per_cpu(loopback_stats, i);
181 stats->rx_bytes += lb_stats->rx_bytes; 179 stats->rx_bytes += lb_stats->rx_bytes;
182 stats->tx_bytes += lb_stats->tx_bytes; 180 stats->tx_bytes += lb_stats->tx_bytes;