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Date: Wed, 11 Oct 2017 03:44:50 -0700
From: Joe Perches <joe@...ches.com>
To: Colin King <colin.king@...onical.com>,
Vlad Yasevich <vyasevich@...il.com>,
Neil Horman <nhorman@...driver.com>,
"David S . Miller" <davem@...emloft.net>,
linux-sctp@...r.kernel.org, netdev@...r.kernel.org
Cc: kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] sctp: make array sctp_sched_ops static
On Wed, 2017-10-11 at 11:17 +0100, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
>
> The array sctp_sched_ops is local to the source and
> does not need to be in global scope, so make it static.
>
> Cleans up sparse warning:
> symbol 'sctp_sched_ops' was not declared. Should it be static?
>
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
> net/sctp/stream_sched.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/net/sctp/stream_sched.c b/net/sctp/stream_sched.c
> index 03513a9fa110..0b83ec51e43b 100644
> --- a/net/sctp/stream_sched.c
> +++ b/net/sctp/stream_sched.c
> @@ -124,7 +124,7 @@ static struct sctp_sched_ops sctp_sched_fcfs = {
> extern struct sctp_sched_ops sctp_sched_prio;
> extern struct sctp_sched_ops sctp_sched_rr;
>
> -struct sctp_sched_ops *sctp_sched_ops[] = {
> +static struct sctp_sched_ops *sctp_sched_ops[] = {
> &sctp_sched_fcfs,
> &sctp_sched_prio,
> &sctp_sched_rr,
Perhaps these should also be const to move more data to text
---
include/net/sctp/stream_sched.h | 3 ++-
include/net/sctp/structs.h | 2 +-
net/sctp/stream.c | 6 +++---
net/sctp/stream_sched.c | 17 +++++++++--------
4 files changed, 15 insertions(+), 13 deletions(-)
diff --git a/include/net/sctp/stream_sched.h b/include/net/sctp/stream_sched.h
index c676550a4c7d..431235c7587a 100644
--- a/include/net/sctp/stream_sched.h
+++ b/include/net/sctp/stream_sched.h
@@ -67,6 +67,7 @@ void sctp_sched_dequeue_done(struct sctp_outq *q, struct sctp_chunk *ch);
void sctp_sched_dequeue_common(struct sctp_outq *q, struct sctp_chunk *ch);
int sctp_sched_init_sid(struct sctp_stream *stream, __u16 sid, gfp_t gfp);
-struct sctp_sched_ops *sctp_sched_ops_from_stream(struct sctp_stream *stream);
+const struct sctp_sched_ops *
+sctp_sched_ops_from_stream(struct sctp_stream *stream);
#endif /* __sctp_stream_sched_h__ */
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 6168e3449131..032ec5618e8a 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -1028,7 +1028,7 @@ struct sctp_outq {
struct list_head out_chunk_list;
/* Stream scheduler being used */
- struct sctp_sched_ops *sched;
+ const struct sctp_sched_ops *sched;
unsigned int out_qlen; /* Total length of queued data chunks. */
diff --git a/net/sctp/stream.c b/net/sctp/stream.c
index 5ea33a2c453b..62678c2229e4 100644
--- a/net/sctp/stream.c
+++ b/net/sctp/stream.c
@@ -140,7 +140,7 @@ static int sctp_stream_alloc_in(struct sctp_stream *stream, __u16 incnt,
int sctp_stream_init(struct sctp_stream *stream, __u16 outcnt, __u16 incnt,
gfp_t gfp)
{
- struct sctp_sched_ops *sched = sctp_sched_ops_from_stream(stream);
+ const struct sctp_sched_ops *sched = sctp_sched_ops_from_stream(stream);
int i, ret = 0;
gfp |= __GFP_NOWARN;
@@ -201,7 +201,7 @@ int sctp_stream_init_ext(struct sctp_stream *stream, __u16 sid)
void sctp_stream_free(struct sctp_stream *stream)
{
- struct sctp_sched_ops *sched = sctp_sched_ops_from_stream(stream);
+ const struct sctp_sched_ops *sched = sctp_sched_ops_from_stream(stream);
int i;
sched->free(stream);
@@ -224,7 +224,7 @@ void sctp_stream_clear(struct sctp_stream *stream)
void sctp_stream_update(struct sctp_stream *stream, struct sctp_stream *new)
{
- struct sctp_sched_ops *sched = sctp_sched_ops_from_stream(stream);
+ const struct sctp_sched_ops *sched = sctp_sched_ops_from_stream(stream);
sched->unsched_all(stream);
sctp_stream_outq_migrate(stream, new, new->outcnt);
diff --git a/net/sctp/stream_sched.c b/net/sctp/stream_sched.c
index 03513a9fa110..642542be57ec 100644
--- a/net/sctp/stream_sched.c
+++ b/net/sctp/stream_sched.c
@@ -106,7 +106,7 @@ static void sctp_sched_fcfs_unsched_all(struct sctp_stream *stream)
{
}
-static struct sctp_sched_ops sctp_sched_fcfs = {
+static const struct sctp_sched_ops sctp_sched_fcfs = {
.set = sctp_sched_fcfs_set,
.get = sctp_sched_fcfs_get,
.init = sctp_sched_fcfs_init,
@@ -121,10 +121,10 @@ static struct sctp_sched_ops sctp_sched_fcfs = {
/* API to other parts of the stack */
-extern struct sctp_sched_ops sctp_sched_prio;
-extern struct sctp_sched_ops sctp_sched_rr;
+extern const struct sctp_sched_ops sctp_sched_prio;
+extern const struct sctp_sched_ops sctp_sched_rr;
-struct sctp_sched_ops *sctp_sched_ops[] = {
+static const struct sctp_sched_ops *sctp_sched_ops[] = {
&sctp_sched_fcfs,
&sctp_sched_prio,
&sctp_sched_rr,
@@ -133,8 +133,8 @@ struct sctp_sched_ops *sctp_sched_ops[] = {
int sctp_sched_set_sched(struct sctp_association *asoc,
enum sctp_sched_type sched)
{
- struct sctp_sched_ops *n = sctp_sched_ops[sched];
- struct sctp_sched_ops *old = asoc->outqueue.sched;
+ const struct sctp_sched_ops *n = sctp_sched_ops[sched];
+ const struct sctp_sched_ops *old = asoc->outqueue.sched;
struct sctp_datamsg *msg = NULL;
struct sctp_chunk *ch;
int i, ret = 0;
@@ -259,13 +259,14 @@ void sctp_sched_dequeue_common(struct sctp_outq *q, struct sctp_chunk *ch)
int sctp_sched_init_sid(struct sctp_stream *stream, __u16 sid, gfp_t gfp)
{
- struct sctp_sched_ops *sched = sctp_sched_ops_from_stream(stream);
+ const struct sctp_sched_ops *sched = sctp_sched_ops_from_stream(stream);
INIT_LIST_HEAD(&stream->out[sid].ext->outq);
return sched->init_sid(stream, sid, gfp);
}
-struct sctp_sched_ops *sctp_sched_ops_from_stream(struct sctp_stream *stream)
+const struct sctp_sched_ops *
+sctp_sched_ops_from_stream(struct sctp_stream *stream)
{
struct sctp_association *asoc;
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