From 6f912042256c12b0927438122594f5379b364f5d Mon Sep 17 00:00:00 2001 From: KAMEZAWA Hiroyuki Date: Mon, 10 Apr 2006 22:52:50 -0700 Subject: [PATCH] for_each_possible_cpu: network codes for_each_cpu() actually iterates across all possible CPUs. We've had mistakes in the past where people were using for_each_cpu() where they should have been iterating across only online or present CPUs. This is inefficient and possibly buggy. We're renaming for_each_cpu() to for_each_possible_cpu() to avoid this in the future. This patch replaces for_each_cpu with for_each_possible_cpu under /net Signed-off-by: KAMEZAWA Hiroyuki Acked-by: "David S. Miller" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- net/core/dev.c | 2 +- net/core/flow.c | 4 ++-- net/core/neighbour.c | 2 +- net/core/utils.c | 4 ++-- 4 files changed, 6 insertions(+), 6 deletions(-) (limited to 'net/core') diff --git a/net/core/dev.c b/net/core/dev.c index 2731570eba5..83231a27ae0 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -3346,7 +3346,7 @@ static int __init net_dev_init(void) * Initialise the packet receive queues. */ - for_each_cpu(i) { + for_each_possible_cpu(i) { struct softnet_data *queue; queue = &per_cpu(softnet_data, i); diff --git a/net/core/flow.c b/net/core/flow.c index 885a2f655db..2191af5f26a 100644 --- a/net/core/flow.c +++ b/net/core/flow.c @@ -79,7 +79,7 @@ static void flow_cache_new_hashrnd(unsigned long arg) { int i; - for_each_cpu(i) + for_each_possible_cpu(i) flow_hash_rnd_recalc(i) = 1; flow_hash_rnd_timer.expires = jiffies + FLOW_HASH_RND_PERIOD; @@ -361,7 +361,7 @@ static int __init flow_cache_init(void) flow_hash_rnd_timer.expires = jiffies + FLOW_HASH_RND_PERIOD; add_timer(&flow_hash_rnd_timer); - for_each_cpu(i) + for_each_possible_cpu(i) flow_cache_cpu_prepare(i); hotcpu_notifier(flow_cache_cpu, 0); diff --git a/net/core/neighbour.c b/net/core/neighbour.c index 2ec8693fb77..4cf878efdb4 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -1627,7 +1627,7 @@ static int neightbl_fill_info(struct neigh_table *tbl, struct sk_buff *skb, memset(&ndst, 0, sizeof(ndst)); - for_each_cpu(cpu) { + for_each_possible_cpu(cpu) { struct neigh_statistics *st; st = per_cpu_ptr(tbl->stats, cpu); diff --git a/net/core/utils.c b/net/core/utils.c index fdc4f38bc46..4f96f389243 100644 --- a/net/core/utils.c +++ b/net/core/utils.c @@ -121,7 +121,7 @@ void __init net_random_init(void) { int i; - for_each_cpu(i) { + for_each_possible_cpu(i) { struct nrnd_state *state = &per_cpu(net_rand_state,i); __net_srandom(state, i+jiffies); } @@ -133,7 +133,7 @@ static int net_random_reseed(void) unsigned long seed[NR_CPUS]; get_random_bytes(seed, sizeof(seed)); - for_each_cpu(i) { + for_each_possible_cpu(i) { struct nrnd_state *state = &per_cpu(net_rand_state,i); __net_srandom(state, seed[i]); } -- cgit v1.2.3