Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=20fea08b5fb639c4c175b5c74a2bb346c5c5bc2e
Commit:     20fea08b5fb639c4c175b5c74a2bb346c5c5bc2e
Parent:     2a8cc6c89039e0530a3335954253b76ed0f9339a
Author:     Eric Dumazet <[EMAIL PROTECTED]>
AuthorDate: Wed Nov 14 01:44:41 2007 -0800
Committer:  David S. Miller <[EMAIL PROTECTED]>
CommitDate: Mon Jan 28 14:53:58 2008 -0800

    [NET]: Move Qdisc_class_ops and Qdisc_ops in appropriate sections.
    
    Qdisc_class_ops are const, and Qdisc_ops are mostly read.
    
    Using "const" and "__read_mostly" qualifiers helps to reduce false
    sharing.
    
    Signed-off-by: Eric Dumazet <[EMAIL PROTECTED]>
    Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
---
 include/net/sch_generic.h |    2 +-
 net/mac80211/wme.c        |    4 ++--
 net/sched/cls_api.c       |    4 ++--
 net/sched/sch_api.c       |   12 ++++++------
 net/sched/sch_atm.c       |    4 ++--
 net/sched/sch_blackhole.c |    2 +-
 net/sched/sch_cbq.c       |    4 ++--
 net/sched/sch_dsmark.c    |    4 ++--
 net/sched/sch_fifo.c      |    4 ++--
 net/sched/sch_generic.c   |   10 +++++-----
 net/sched/sch_gred.c      |    2 +-
 net/sched/sch_hfsc.c      |    4 ++--
 net/sched/sch_htb.c       |    4 ++--
 net/sched/sch_ingress.c   |    4 ++--
 net/sched/sch_netem.c     |    6 +++---
 net/sched/sch_prio.c      |    6 +++---
 net/sched/sch_red.c       |    4 ++--
 net/sched/sch_sfq.c       |    2 +-
 net/sched/sch_tbf.c       |    4 ++--
 19 files changed, 43 insertions(+), 43 deletions(-)

diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index 4c3b351..9418ac2 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -86,7 +86,7 @@ struct Qdisc_class_ops
 struct Qdisc_ops
 {
        struct Qdisc_ops        *next;
-       struct Qdisc_class_ops  *cl_ops;
+       const struct Qdisc_class_ops    *cl_ops;
        char                    id[IFNAMSIZ];
        int                     priv_size;
 
diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index 5b8a157..8dbdede 100644
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -527,7 +527,7 @@ static struct tcf_proto ** wme_classop_find_tcf(struct 
Qdisc *qd,
 
 /* this qdisc is classful (i.e. has classes, some of which may have leaf 
qdiscs attached)
  * - these are the operations on the classes */
-static struct Qdisc_class_ops class_ops =
+static const struct Qdisc_class_ops class_ops =
 {
        .graft = wme_classop_graft,
        .leaf = wme_classop_leaf,
@@ -547,7 +547,7 @@ static struct Qdisc_class_ops class_ops =
 
 
 /* queueing discipline operations */
-static struct Qdisc_ops wme_qdisc_ops =
+static struct Qdisc_ops wme_qdisc_ops __read_mostly =
 {
        .next = NULL,
        .cl_ops = &class_ops,
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 0365797..bb98045 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -130,7 +130,7 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct 
nlmsghdr *n, void *arg)
        struct tcf_proto **back, **chain;
        struct tcf_proto *tp;
        struct tcf_proto_ops *tp_ops;
-       struct Qdisc_class_ops *cops;
+       const struct Qdisc_class_ops *cops;
        unsigned long cl;
        unsigned long fh;
        int err;
@@ -382,7 +382,7 @@ static int tc_dump_tfilter(struct sk_buff *skb, struct 
netlink_callback *cb)
        struct tcf_proto *tp, **chain;
        struct tcmsg *tcm = (struct tcmsg*)NLMSG_DATA(cb->nlh);
        unsigned long cl = 0;
-       struct Qdisc_class_ops *cops;
+       const struct Qdisc_class_ops *cops;
        struct tcf_dump_args arg;
 
        if (cb->nlh->nlmsg_len < NLMSG_LENGTH(sizeof(*tcm)))
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 8ae137e..259321b 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -195,7 +195,7 @@ static struct Qdisc *qdisc_leaf(struct Qdisc *p, u32 
classid)
 {
        unsigned long cl;
        struct Qdisc *leaf;
-       struct Qdisc_class_ops *cops = p->ops->cl_ops;
+       const struct Qdisc_class_ops *cops = p->ops->cl_ops;
 
        if (cops == NULL)
                return NULL;
@@ -373,7 +373,7 @@ dev_graft_qdisc(struct net_device *dev, struct Qdisc *qdisc)
 
 void qdisc_tree_decrease_qlen(struct Qdisc *sch, unsigned int n)
 {
-       struct Qdisc_class_ops *cops;
+       const struct Qdisc_class_ops *cops;
        unsigned long cl;
        u32 parentid;
 
@@ -417,7 +417,7 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc 
*parent,
                        *old = dev_graft_qdisc(dev, new);
                }
        } else {
-               struct Qdisc_class_ops *cops = parent->ops->cl_ops;
+               const struct Qdisc_class_ops *cops = parent->ops->cl_ops;
 
                err = -EINVAL;
 
@@ -581,7 +581,7 @@ static int
 check_loop_fn(struct Qdisc *q, unsigned long cl, struct qdisc_walker *w)
 {
        struct Qdisc *leaf;
-       struct Qdisc_class_ops *cops = q->ops->cl_ops;
+       const struct Qdisc_class_ops *cops = q->ops->cl_ops;
        struct check_loop_arg *arg = (struct check_loop_arg *)w;
 
        leaf = cops->leaf(q, cl);
@@ -924,7 +924,7 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct 
nlmsghdr *n, void *arg)
        struct rtattr **tca = arg;
        struct net_device *dev;
        struct Qdisc *q = NULL;
-       struct Qdisc_class_ops *cops;
+       const struct Qdisc_class_ops *cops;
        unsigned long cl = 0;
        unsigned long new_cl;
        u32 pid = tcm->tcm_parent;
@@ -1039,7 +1039,7 @@ static int tc_fill_tclass(struct sk_buff *skb, struct 
Qdisc *q,
        struct nlmsghdr  *nlh;
        unsigned char *b = skb_tail_pointer(skb);
        struct gnet_dump d;
-       struct Qdisc_class_ops *cl_ops = q->ops->cl_ops;
+       const struct Qdisc_class_ops *cl_ops = q->ops->cl_ops;
 
        nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*tcm), flags);
        tcm = NLMSG_DATA(nlh);
diff --git a/net/sched/sch_atm.c b/net/sched/sch_atm.c
index ddc4f2c..d870a41 100644
--- a/net/sched/sch_atm.c
+++ b/net/sched/sch_atm.c
@@ -668,7 +668,7 @@ static int atm_tc_dump(struct Qdisc *sch, struct sk_buff 
*skb)
        return 0;
 }
 
-static struct Qdisc_class_ops atm_class_ops = {
+static const struct Qdisc_class_ops atm_class_ops = {
        .graft          = atm_tc_graft,
        .leaf           = atm_tc_leaf,
        .get            = atm_tc_get,
@@ -683,7 +683,7 @@ static struct Qdisc_class_ops atm_class_ops = {
        .dump_stats     = atm_tc_dump_class_stats,
 };
 
-static struct Qdisc_ops atm_qdisc_ops = {
+static struct Qdisc_ops atm_qdisc_ops __read_mostly = {
        .cl_ops         = &atm_class_ops,
        .id             = "atm",
        .priv_size      = sizeof(struct atm_qdisc_data),
diff --git a/net/sched/sch_blackhole.c b/net/sched/sch_blackhole.c
index f914fc4..507fb48 100644
--- a/net/sched/sch_blackhole.c
+++ b/net/sched/sch_blackhole.c
@@ -28,7 +28,7 @@ static struct sk_buff *blackhole_dequeue(struct Qdisc *sch)
        return NULL;
 }
 
-static struct Qdisc_ops blackhole_qdisc_ops = {
+static struct Qdisc_ops blackhole_qdisc_ops __read_mostly = {
        .id             = "blackhole",
        .priv_size      = 0,
        .enqueue        = blackhole_enqueue,
diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
index 4de3744..bea123f 100644
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -2045,7 +2045,7 @@ static void cbq_walk(struct Qdisc *sch, struct 
qdisc_walker *arg)
        }
 }
 
-static struct Qdisc_class_ops cbq_class_ops = {
+static const struct Qdisc_class_ops cbq_class_ops = {
        .graft          =       cbq_graft,
        .leaf           =       cbq_leaf,
        .qlen_notify    =       cbq_qlen_notify,
@@ -2061,7 +2061,7 @@ static struct Qdisc_class_ops cbq_class_ops = {
        .dump_stats     =       cbq_dump_class_stats,
 };
 
-static struct Qdisc_ops cbq_qdisc_ops = {
+static struct Qdisc_ops cbq_qdisc_ops __read_mostly = {
        .next           =       NULL,
        .cl_ops         =       &cbq_class_ops,
        .id             =       "cbq",
diff --git a/net/sched/sch_dsmark.c b/net/sched/sch_dsmark.c
index 60f8919..b9fe697 100644
--- a/net/sched/sch_dsmark.c
+++ b/net/sched/sch_dsmark.c
@@ -461,7 +461,7 @@ rtattr_failure:
        return RTA_NEST_CANCEL(skb, opts);
 }
 
-static struct Qdisc_class_ops dsmark_class_ops = {
+static const struct Qdisc_class_ops dsmark_class_ops = {
        .graft          =       dsmark_graft,
        .leaf           =       dsmark_leaf,
        .get            =       dsmark_get,
@@ -475,7 +475,7 @@ static struct Qdisc_class_ops dsmark_class_ops = {
        .dump           =       dsmark_dump_class,
 };
 
-static struct Qdisc_ops dsmark_qdisc_ops = {
+static struct Qdisc_ops dsmark_qdisc_ops __read_mostly = {
        .next           =       NULL,
        .cl_ops         =       &dsmark_class_ops,
        .id             =       "dsmark",
diff --git a/net/sched/sch_fifo.c b/net/sched/sch_fifo.c
index c264308..d71dbfc 100644
--- a/net/sched/sch_fifo.c
+++ b/net/sched/sch_fifo.c
@@ -78,7 +78,7 @@ rtattr_failure:
        return -1;
 }
 
-struct Qdisc_ops pfifo_qdisc_ops = {
+struct Qdisc_ops pfifo_qdisc_ops __read_mostly = {
        .id             =       "pfifo",
        .priv_size      =       sizeof(struct fifo_sched_data),
        .enqueue        =       pfifo_enqueue,
@@ -92,7 +92,7 @@ struct Qdisc_ops pfifo_qdisc_ops = {
        .owner          =       THIS_MODULE,
 };
 
-struct Qdisc_ops bfifo_qdisc_ops = {
+struct Qdisc_ops bfifo_qdisc_ops __read_mostly = {
        .id             =       "bfifo",
        .priv_size      =       sizeof(struct fifo_sched_data),
        .enqueue        =       bfifo_enqueue,
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 84c048a..9be2f15 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -287,7 +287,7 @@ static int noop_requeue(struct sk_buff *skb, struct Qdisc* 
qdisc)
        return NET_XMIT_CN;
 }
 
-struct Qdisc_ops noop_qdisc_ops = {
+struct Qdisc_ops noop_qdisc_ops __read_mostly = {
        .id             =       "noop",
        .priv_size      =       0,
        .enqueue        =       noop_enqueue,
@@ -304,7 +304,7 @@ struct Qdisc noop_qdisc = {
        .list           =       LIST_HEAD_INIT(noop_qdisc.list),
 };
 
-static struct Qdisc_ops noqueue_qdisc_ops = {
+static struct Qdisc_ops noqueue_qdisc_ops __read_mostly = {
        .id             =       "noqueue",
        .priv_size      =       0,
        .enqueue        =       noop_enqueue,
@@ -406,7 +406,7 @@ static int pfifo_fast_init(struct Qdisc *qdisc, struct 
rtattr *opt)
        return 0;
 }
 
-static struct Qdisc_ops pfifo_fast_ops = {
+static struct Qdisc_ops pfifo_fast_ops __read_mostly = {
        .id             =       "pfifo_fast",
        .priv_size      =       PFIFO_FAST_BANDS * sizeof(struct sk_buff_head),
        .enqueue        =       pfifo_fast_enqueue,
@@ -472,7 +472,7 @@ errout:
 
 void qdisc_reset(struct Qdisc *qdisc)
 {
-       struct Qdisc_ops *ops = qdisc->ops;
+       const struct Qdisc_ops *ops = qdisc->ops;
 
        if (ops->reset)
                ops->reset(qdisc);
@@ -491,7 +491,7 @@ static void __qdisc_destroy(struct rcu_head *head)
 
 void qdisc_destroy(struct Qdisc *qdisc)
 {
-       struct Qdisc_ops  *ops = qdisc->ops;
+       const struct Qdisc_ops  *ops = qdisc->ops;
 
        if (qdisc->flags & TCQ_F_BUILTIN ||
            !atomic_dec_and_test(&qdisc->refcnt))
diff --git a/net/sched/sch_gred.c b/net/sched/sch_gred.c
index 3cc6dda..e2bcd66 100644
--- a/net/sched/sch_gred.c
+++ b/net/sched/sch_gred.c
@@ -577,7 +577,7 @@ static void gred_destroy(struct Qdisc *sch)
        }
 }
 
-static struct Qdisc_ops gred_qdisc_ops = {
+static struct Qdisc_ops gred_qdisc_ops __read_mostly = {
        .id             =       "gred",
        .priv_size      =       sizeof(struct gred_sched),
        .enqueue        =       gred_enqueue,
diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
index a6ad491..69dc3bc 100644
--- a/net/sched/sch_hfsc.c
+++ b/net/sched/sch_hfsc.c
@@ -1698,7 +1698,7 @@ hfsc_drop(struct Qdisc *sch)
        return 0;
 }
 
-static struct Qdisc_class_ops hfsc_class_ops = {
+static const struct Qdisc_class_ops hfsc_class_ops = {
        .change         = hfsc_change_class,
        .delete         = hfsc_delete_class,
        .graft          = hfsc_graft_class,
@@ -1714,7 +1714,7 @@ static struct Qdisc_class_ops hfsc_class_ops = {
        .walk           = hfsc_walk
 };
 
-static struct Qdisc_ops hfsc_qdisc_ops = {
+static struct Qdisc_ops hfsc_qdisc_ops __read_mostly = {
        .id             = "hfsc",
        .init           = hfsc_init_qdisc,
        .change         = hfsc_change_qdisc,
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index 5e608a6..72beb66 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -1529,7 +1529,7 @@ static void htb_walk(struct Qdisc *sch, struct 
qdisc_walker *arg)
        }
 }
 
-static struct Qdisc_class_ops htb_class_ops = {
+static const struct Qdisc_class_ops htb_class_ops = {
        .graft          =       htb_graft,
        .leaf           =       htb_leaf,
        .qlen_notify    =       htb_qlen_notify,
@@ -1545,7 +1545,7 @@ static struct Qdisc_class_ops htb_class_ops = {
        .dump_stats     =       htb_dump_class_stats,
 };
 
-static struct Qdisc_ops htb_qdisc_ops = {
+static struct Qdisc_ops htb_qdisc_ops __read_mostly = {
        .next           =       NULL,
        .cl_ops         =       &htb_class_ops,
        .id             =       "htb",
diff --git a/net/sched/sch_ingress.c b/net/sched/sch_ingress.c
index d377dec..902d82e 100644
--- a/net/sched/sch_ingress.c
+++ b/net/sched/sch_ingress.c
@@ -338,7 +338,7 @@ rtattr_failure:
        return -1;
 }
 
-static struct Qdisc_class_ops ingress_class_ops = {
+static const struct Qdisc_class_ops ingress_class_ops = {
        .graft          =       ingress_graft,
        .leaf           =       ingress_leaf,
        .get            =       ingress_get,
@@ -352,7 +352,7 @@ static struct Qdisc_class_ops ingress_class_ops = {
        .dump           =       NULL,
 };
 
-static struct Qdisc_ops ingress_qdisc_ops = {
+static struct Qdisc_ops ingress_qdisc_ops __read_mostly = {
        .next           =       NULL,
        .cl_ops         =       &ingress_class_ops,
        .id             =       "ingress",
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index 9e5e87e..6c344ad 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -544,7 +544,7 @@ rtattr_failure:
        return -1;
 }
 
-static struct Qdisc_ops tfifo_qdisc_ops = {
+static struct Qdisc_ops tfifo_qdisc_ops __read_mostly = {
        .id             =       "tfifo",
        .priv_size      =       sizeof(struct fifo_sched_data),
        .enqueue        =       tfifo_enqueue,
@@ -705,7 +705,7 @@ static struct tcf_proto **netem_find_tcf(struct Qdisc *sch, 
unsigned long cl)
        return NULL;
 }
 
-static struct Qdisc_class_ops netem_class_ops = {
+static const struct Qdisc_class_ops netem_class_ops = {
        .graft          =       netem_graft,
        .leaf           =       netem_leaf,
        .get            =       netem_get,
@@ -717,7 +717,7 @@ static struct Qdisc_class_ops netem_class_ops = {
        .dump           =       netem_dump_class,
 };
 
-static struct Qdisc_ops netem_qdisc_ops = {
+static struct Qdisc_ops netem_qdisc_ops __read_mostly = {
        .id             =       "netem",
        .cl_ops         =       &netem_class_ops,
        .priv_size      =       sizeof(struct netem_sched_data),
diff --git a/net/sched/sch_prio.c b/net/sched/sch_prio.c
index de89409..2243aaa 100644
--- a/net/sched/sch_prio.c
+++ b/net/sched/sch_prio.c
@@ -468,7 +468,7 @@ static struct tcf_proto ** prio_find_tcf(struct Qdisc *sch, 
unsigned long cl)
        return &q->filter_list;
 }
 
-static struct Qdisc_class_ops prio_class_ops = {
+static const struct Qdisc_class_ops prio_class_ops = {
        .graft          =       prio_graft,
        .leaf           =       prio_leaf,
        .get            =       prio_get,
@@ -483,7 +483,7 @@ static struct Qdisc_class_ops prio_class_ops = {
        .dump_stats     =       prio_dump_class_stats,
 };
 
-static struct Qdisc_ops prio_qdisc_ops = {
+static struct Qdisc_ops prio_qdisc_ops __read_mostly = {
        .next           =       NULL,
        .cl_ops         =       &prio_class_ops,
        .id             =       "prio",
@@ -500,7 +500,7 @@ static struct Qdisc_ops prio_qdisc_ops = {
        .owner          =       THIS_MODULE,
 };
 
-static struct Qdisc_ops rr_qdisc_ops = {
+static struct Qdisc_ops rr_qdisc_ops __read_mostly = {
        .next           =       NULL,
        .cl_ops         =       &prio_class_ops,
        .id             =       "rr",
diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c
index 9b95fef..f1e9647 100644
--- a/net/sched/sch_red.c
+++ b/net/sched/sch_red.c
@@ -359,7 +359,7 @@ static struct tcf_proto **red_find_tcf(struct Qdisc *sch, 
unsigned long cl)
        return NULL;
 }
 
-static struct Qdisc_class_ops red_class_ops = {
+static const struct Qdisc_class_ops red_class_ops = {
        .graft          =       red_graft,
        .leaf           =       red_leaf,
        .get            =       red_get,
@@ -371,7 +371,7 @@ static struct Qdisc_class_ops red_class_ops = {
        .dump           =       red_dump_class,
 };
 
-static struct Qdisc_ops red_qdisc_ops = {
+static struct Qdisc_ops red_qdisc_ops __read_mostly = {
        .id             =       "red",
        .priv_size      =       sizeof(struct red_sched_data),
        .cl_ops         =       &red_class_ops,
diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
index 6529387..c58fa6e 100644
--- a/net/sched/sch_sfq.c
+++ b/net/sched/sch_sfq.c
@@ -480,7 +480,7 @@ rtattr_failure:
        return -1;
 }
 
-static struct Qdisc_ops sfq_qdisc_ops = {
+static struct Qdisc_ops sfq_qdisc_ops __read_mostly = {
        .next           =       NULL,
        .cl_ops         =       NULL,
        .id             =       "sfq",
diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c
index b0d8109..d88fea9 100644
--- a/net/sched/sch_tbf.c
+++ b/net/sched/sch_tbf.c
@@ -469,7 +469,7 @@ static struct tcf_proto **tbf_find_tcf(struct Qdisc *sch, 
unsigned long cl)
        return NULL;
 }
 
-static struct Qdisc_class_ops tbf_class_ops =
+static const struct Qdisc_class_ops tbf_class_ops =
 {
        .graft          =       tbf_graft,
        .leaf           =       tbf_leaf,
@@ -482,7 +482,7 @@ static struct Qdisc_class_ops tbf_class_ops =
        .dump           =       tbf_dump_class,
 };
 
-static struct Qdisc_ops tbf_qdisc_ops = {
+static struct Qdisc_ops tbf_qdisc_ops __read_mostly = {
        .next           =       NULL,
        .cl_ops         =       &tbf_class_ops,
        .id             =       "tbf",
-
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