* [PATCH] Appletalk: convert some spinlocks to rwlocks
@ 2002-10-08 3:09 Arnaldo Carvalho de Melo
0 siblings, 0 replies; only message in thread
From: Arnaldo Carvalho de Melo @ 2002-10-08 3:09 UTC (permalink / raw)
To: David S. Miller; +Cc: Linux Kernel Mailing List
Hi David,
Please pull from:
master.kernel.org:/home/acme/BK/llc-2.5
Now there is only this changeset outstanding.
- Arnaldo
You can import this changeset into BK by piping this whole message to:
'| bk receive [path to repository]' or apply the patch as usual.
===================================================================
ChangeSet@1.633, 2002-10-08 00:05:45-03:00, acme@conectiva.com.br
o Appletalk: convert some spinlocks to rwlocks
- Remove uneeded #ifdef CONFIG_SYSCTL
- Make __init strings __initdata, saving some more bytes after init.
include/linux/atalk.h | 4 +-
net/appletalk/atalk_proc.c | 8 ++--
net/appletalk/ddp.c | 65 +++++++++++++++++++--------------------
net/appletalk/sysctl_net_atalk.c | 8 ++--
4 files changed, 42 insertions(+), 43 deletions(-)
diff -Nru a/include/linux/atalk.h b/include/linux/atalk.h
--- a/include/linux/atalk.h Tue Oct 8 00:06:24 2002
+++ b/include/linux/atalk.h Tue Oct 8 00:06:24 2002
@@ -199,13 +199,13 @@
#define at_sk(__sk) ((struct atalk_sock *)(__sk)->protinfo)
extern struct sock *atalk_sockets;
-extern spinlock_t atalk_sockets_lock;
+extern rwlock_t atalk_sockets_lock;
extern struct atalk_route *atalk_routes;
extern rwlock_t atalk_routes_lock;
extern struct atalk_iface *atalk_interfaces;
-extern spinlock_t atalk_interfaces_lock;
+extern rwlock_t atalk_interfaces_lock;
extern struct atalk_route atrtr_default;
diff -Nru a/net/appletalk/atalk_proc.c b/net/appletalk/atalk_proc.c
--- a/net/appletalk/atalk_proc.c Tue Oct 8 00:06:24 2002
+++ b/net/appletalk/atalk_proc.c Tue Oct 8 00:06:24 2002
@@ -30,7 +30,7 @@
{
loff_t l = *pos;
- spin_lock_bh(&atalk_interfaces_lock);
+ read_lock_bh(&atalk_interfaces_lock);
return l ? atalk_get_interface_idx(--l) : (void *)1;
}
@@ -53,7 +53,7 @@
static void atalk_seq_interface_stop(struct seq_file *seq, void *v)
{
- spin_unlock_bh(&atalk_interfaces_lock);
+ read_unlock_bh(&atalk_interfaces_lock);
}
static int atalk_seq_interface_show(struct seq_file *seq, void *v)
@@ -154,7 +154,7 @@
{
loff_t l = *pos;
- spin_lock_bh(&atalk_sockets_lock);
+ read_lock_bh(&atalk_sockets_lock);
return l ? atalk_get_socket_idx(--l) : (void *)1;
}
@@ -177,7 +177,7 @@
static void atalk_seq_socket_stop(struct seq_file *seq, void *v)
{
- spin_unlock_bh(&atalk_sockets_lock);
+ read_unlock_bh(&atalk_sockets_lock);
}
static int atalk_seq_socket_show(struct seq_file *seq, void *v)
diff -Nru a/net/appletalk/ddp.c b/net/appletalk/ddp.c
--- a/net/appletalk/ddp.c Tue Oct 8 00:06:24 2002
+++ b/net/appletalk/ddp.c Tue Oct 8 00:06:24 2002
@@ -73,10 +73,8 @@
struct atalk_addr *sa);
extern void aarp_proxy_remove(struct net_device *dev, struct atalk_addr *sa);
-#ifdef CONFIG_SYSCTL
-extern inline void atalk_register_sysctl(void);
-extern inline void atalk_unregister_sysctl(void);
-#endif /* CONFIG_SYSCTL */
+extern void atalk_register_sysctl(void);
+extern void atalk_unregister_sysctl(void);
struct datalink_proto *ddp_dl, *aarp_dl;
static struct proto_ops atalk_dgram_ops;
@@ -88,29 +86,29 @@
\**************************************************************************/
struct sock *atalk_sockets;
-spinlock_t atalk_sockets_lock = SPIN_LOCK_UNLOCKED;
+rwlock_t atalk_sockets_lock = RW_LOCK_UNLOCKED;
extern inline void atalk_insert_socket(struct sock *sk)
{
- spin_lock_bh(&atalk_sockets_lock);
+ write_lock_bh(&atalk_sockets_lock);
sk->next = atalk_sockets;
if (sk->next)
atalk_sockets->pprev = &sk->next;
atalk_sockets = sk;
sk->pprev = &atalk_sockets;
- spin_unlock_bh(&atalk_sockets_lock);
+ write_unlock_bh(&atalk_sockets_lock);
}
extern inline void atalk_remove_socket(struct sock *sk)
{
- spin_lock_bh(&atalk_sockets_lock);
+ write_lock_bh(&atalk_sockets_lock);
if (sk->pprev) {
if (sk->next)
sk->next->pprev = sk->pprev;
*sk->pprev = sk->next;
sk->pprev = NULL;
}
- spin_unlock_bh(&atalk_sockets_lock);
+ write_unlock_bh(&atalk_sockets_lock);
}
static struct sock *atalk_search_socket(struct sockaddr_at *to,
@@ -118,7 +116,7 @@
{
struct sock *s;
- spin_lock_bh(&atalk_sockets_lock);
+ read_lock_bh(&atalk_sockets_lock);
for (s = atalk_sockets; s; s = s->next) {
struct atalk_sock *at = at_sk(s);
@@ -145,7 +143,7 @@
break;
}
}
- spin_unlock_bh(&atalk_sockets_lock);
+ read_unlock_bh(&atalk_sockets_lock);
return s;
}
@@ -164,7 +162,7 @@
{
struct sock *s;
- spin_lock_bh(&atalk_sockets_lock);
+ write_lock_bh(&atalk_sockets_lock);
for (s = atalk_sockets; s; s = s->next) {
struct atalk_sock *at = at_sk(s);
@@ -183,7 +181,7 @@
sk->pprev = &atalk_sockets;
}
- spin_unlock_bh(&atalk_sockets_lock);
+ write_unlock_bh(&atalk_sockets_lock);
return s;
}
@@ -225,12 +223,12 @@
* *
\**************************************************************************/
-/* Anti-deadlock ordering is router_lock --> iface_lock -DaveM */
+/* Anti-deadlock ordering is atalk_routes_lock --> iface_lock -DaveM */
struct atalk_route *atalk_routes;
rwlock_t atalk_routes_lock = RW_LOCK_UNLOCKED;
struct atalk_iface *atalk_interfaces;
-spinlock_t atalk_interfaces_lock = SPIN_LOCK_UNLOCKED;
+rwlock_t atalk_interfaces_lock = RW_LOCK_UNLOCKED;
/* For probing devices or in a routerless network */
struct atalk_route atrtr_default;
@@ -245,7 +243,7 @@
struct atalk_iface **iface = &atalk_interfaces;
struct atalk_iface *tmp;
- spin_lock_bh(&atalk_interfaces_lock);
+ write_lock_bh(&atalk_interfaces_lock);
while ((tmp = *iface) != NULL) {
if (tmp->dev == dev) {
*iface = tmp->next;
@@ -255,7 +253,7 @@
} else
iface = &tmp->next;
}
- spin_unlock_bh(&atalk_interfaces_lock);
+ write_unlock_bh(&atalk_interfaces_lock);
}
static struct atalk_iface *atif_add_device(struct net_device *dev,
@@ -274,10 +272,10 @@
iface->address = *sa;
iface->status = 0;
- spin_lock_bh(&atalk_interfaces_lock);
+ write_lock_bh(&atalk_interfaces_lock);
iface->next = atalk_interfaces;
atalk_interfaces = iface;
- spin_unlock_bh(&atalk_interfaces_lock);
+ write_unlock_bh(&atalk_interfaces_lock);
out:
return iface;
out_mem:
@@ -394,7 +392,7 @@
* Return a point-to-point interface only if
* there is no non-ptp interface available.
*/
- spin_lock_bh(&atalk_interfaces_lock);
+ read_lock_bh(&atalk_interfaces_lock);
for (iface = atalk_interfaces; iface; iface = iface->next) {
if (!fiface && !(iface->dev->flags & IFF_LOOPBACK))
fiface = iface;
@@ -411,7 +409,7 @@
else
retval = NULL;
out:
- spin_unlock_bh(&atalk_interfaces_lock);
+ read_unlock_bh(&atalk_interfaces_lock);
return retval;
}
@@ -442,7 +440,7 @@
{
struct atalk_iface *iface;
- spin_lock_bh(&atalk_interfaces_lock);
+ read_lock_bh(&atalk_interfaces_lock);
for (iface = atalk_interfaces; iface; iface = iface->next) {
if ((node == ATADDR_BCAST ||
node == ATADDR_ANYNODE ||
@@ -457,7 +455,7 @@
ntohs(net) <= ntohs(iface->nets.nr_lastnet))
break;
}
- spin_unlock_bh(&atalk_interfaces_lock);
+ read_unlock_bh(&atalk_interfaces_lock);
return iface;
}
@@ -574,7 +572,7 @@
if (!devhint) {
riface = NULL;
- spin_lock_bh(&atalk_interfaces_lock);
+ read_lock_bh(&atalk_interfaces_lock);
for (iface = atalk_interfaces; iface; iface = iface->next) {
if (!riface &&
ntohs(ga->sat_addr.s_net) >=
@@ -587,7 +585,7 @@
ga->sat_addr.s_node == iface->address.s_node)
riface = iface;
}
- spin_unlock_bh(&atalk_interfaces_lock);
+ read_unlock_bh(&atalk_interfaces_lock);
retval = -ENETUNREACH;
if (!riface)
@@ -1042,7 +1040,7 @@
struct sock *s;
int retval;
- spin_lock_bh(&atalk_sockets_lock);
+ write_lock_bh(&atalk_sockets_lock);
for (sat->sat_port = ATPORT_RESERVED;
sat->sat_port < ATPORT_LAST;
@@ -1071,7 +1069,7 @@
retval = -EBUSY;
out:
- spin_unlock_bh(&atalk_sockets_lock);
+ write_unlock_bh(&atalk_sockets_lock);
return retval;
}
@@ -1831,13 +1829,18 @@
EXPORT_SYMBOL(atrtr_get_dev);
EXPORT_SYMBOL(atalk_find_dev_addr);
+static char atalk_banner[] __initdata =
+ KERN_INFO "NET4: AppleTalk 0.20 for Linux NET4.0\n";
+static char atalk_err_snap[] __initdata =
+ KERN_CRIT "Unable to register DDP with SNAP.\n";
+
/* Called by proto.c on kernel start up */
static int __init atalk_init(void)
{
(void)sock_register(&atalk_family_ops);
ddp_dl = register_snap_client(ddp_snap_id, atalk_rcv);
if (!ddp_dl)
- printk(KERN_CRIT "Unable to register DDP with SNAP.\n");
+ printk(atalk_err_snap);
dev_add_pack(<alk_packet_type);
dev_add_pack(&ppptalk_packet_type);
@@ -1848,15 +1851,12 @@
#ifdef CONFIG_PROC_FS
aarp_register_proc_fs();
#endif /* CONFIG_PROC_FS */
-#ifdef CONFIG_SYSCTL
atalk_register_sysctl();
-#endif /* CONFIG_SYSCTL */
- printk(KERN_INFO "NET4: AppleTalk 0.20 for Linux NET4.0\n");
+ printk(atalk_banner);
return 0;
}
module_init(atalk_init);
-#ifdef MODULE
/*
* Note on MOD_{INC,DEC}_USE_COUNT:
*
@@ -1886,7 +1886,6 @@
sock_unregister(PF_APPLETALK);
}
module_exit(atalk_exit);
-#endif /* MODULE */
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Alan Cox <Alan.Cox@linux.org>");
diff -Nru a/net/appletalk/sysctl_net_atalk.c b/net/appletalk/sysctl_net_atalk.c
--- a/net/appletalk/sysctl_net_atalk.c Tue Oct 8 00:06:24 2002
+++ b/net/appletalk/sysctl_net_atalk.c Tue Oct 8 00:06:24 2002
@@ -7,14 +7,14 @@
*/
#include <linux/config.h>
-#include <linux/sysctl.h>
+#ifdef CONFIG_SYSCTL
+#include <linux/sysctl.h>
extern int sysctl_aarp_expiry_time;
extern int sysctl_aarp_tick_time;
extern int sysctl_aarp_retransmit_limit;
extern int sysctl_aarp_resolve_time;
-#ifdef CONFIG_SYSCTL
static struct ctl_table atalk_table[] = {
{
.ctl_name = NET_ATALK_AARP_EXPIRY_TIME,
@@ -83,7 +83,7 @@
unregister_sysctl_table(atalk_table_header);
}
-#else
+#else /* CONFIG_PROC_FS */
void atalk_register_sysctl(void)
{
}
@@ -91,4 +91,4 @@
void atalk_unregister_sysctl(void)
{
}
-#endif
+#endif /* CONFIG_PROC_FS */
===================================================================
This BitKeeper patch contains the following changesets:
1.633
## Wrapped with gzip_uu ##
begin 664 bkpatch25064
M'XL(`+!+HCT``^U8ZV_B1A#_C/^*T46J[J[%[*[7+U*BRT%RC9)+(I*HJGJ5
MM=CKPPK8R#;D3N*/[SZ<R\N`H>VG-*"=8.\\=^8W8^_!3<'S;HN%4V[LP6]9
M479;89;RL$P6S`RSJ3G*Q8UAEHD;G7$VY1VYM_/QM#.9A&UBVH:X?<G*<`P+
MGA?=%C:M'U?*[S/>;0V//MV<'0X-H]>#_IBE7_D5+Z'7,\HL7[!)5'Q@Y7B2
MI6:9L[28\E(I7O[8NB0($?&QL6LAVUEB!U%W&>((8T8QCQ"AGD,-:=>'Y[8_
MDX(1<I%#7-M=.L@ER!@`-AW+`D0Z&'60!PAUD=VE=AM9782@5BC\3*&-C(_P
M[SK0-T+(X'`VFP@)D]LN"+TBIB44(NQ0S))TDH6WA=`*^9WZ5S"(;QN&?)HM
M.,Q3SB,>P5X21SR&_L7Y\<FGX.J/J_[UF=KWF=UR"((D3830,D_2KT7U,V(E
M^P4*MA#7M+YIEG,8?2]Y`2PN>0YRFVF<@H,<GQB7#T=IM+?\,PS$D'&P(7PI
M+SOL/AB=XGL1EI-`7`R8O&"&CZ/JBP.U,+7P,L:VST9VZ&(\XIC0^A-L)EQD
MBX?$B5&RM!R"G"U-CJ)9C96(VG@9NC3VN,_CV+*LR,*-K'R0]\@PZGN8",.:
M"%"^!;,\"Q_DB'+`R+*7R/.IM71#;Q1[D<]=C]O.J)E==6+OS;,=S]U\U$D:
M3N81[TR2=/Y-RS/'3R)'T9)05]1.&-FQZX^XA1AFR%]AX&J!C\^4^)0J5%KM
MCX2I_R:T_U"L(T+K^QK`R`OX(AOAB[Y6^-(9>0'M_$Y]!1Q=KDF`'<!M(/H)
M-D[4VLHYBP+I;3`:O_U)2TY285#,0EZH.^_VC8'M2!:U:I9YNID)VZ[DTJ16
M4R%^\O(1AX<4AR(K%#WCD?516TZ;._CN9;VB.-:6M6[LUE(@JD-47=C;U@6!
M-GFM=:'1\%E=U`9\EY(0<9*)IPG_)A2GE;=!"2_S;E]R>)K#6\GQK"3V:[!<
M]<S-F;ISXVZ$XD\:]WV:4L_#EDI3O'6>6B)1+>NU9JH>>=8BN(KX+GGJ.D"-
M$]<'<I]SBRR)JGS+^=>D$!<#/2^^E;<$0K[<.$]7;!WX6":U6M>D/_1@^'MP
M=M$_#6[.)3D:2%Y;\<JU=9<G)=^(]DAITZ1BV03W@LG13$YS/5@U/$T:ZR':
M.$6:-2^J$$&39LUK@!W=(A5IZ(VG`^`Y6WA#B$8K13KOX3`MDW8D3%3'F>41
ME\D.27&?2MF\K&`+VNT#2"2,53\';,$_P_N.D*HG"4W6@U]]RA`=,DWJW:^9
M*XBMN6QO303J^%P5;$V::],SB29;:+-\I4V3IG,6Q50R:=)\TJ)4U9XFC74Y
MRC%-FNNR=10U:34>('VE3)/6%C,DTJY5M"FPN%0S*=JP2$1)B42VC:)D91)"
M.&9YE<LCEJ8\__.O1[T`>D;K]&AX'IR<'U_`F_.C:]K5K>E:<``R"8(XR^%,
M3B8@;YOH2_IFOT8ZSP4,IVQ6+[\_/+F&-S<I&TVXZFP5<L-@<`EW23F&J_/#
M2U/)_B+1@58C--61GHG"+F_?/E6E<<26T":I)=J)X+!5L)XP:,^K[;[>[DGZ
M<I1Y^9)BV[EFUW<HC8:<U>]0'@9S2CTU\=#_'UBW&,S5JZ>UX\[+V.\R^V"=
MV%@D:ZU'>]73`/RJ'P>T5G-\(%@E5@UTXU3K'I\4'$0CK$1<#B_ZP?&5ZFJ^
EP@ZU[O$T2N+:??#P8CD<<Q'\^;1''!_'S(V-OP$P8FC-N!8`````
`
end
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2002-10-08 3:03 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2002-10-08 3:09 [PATCH] Appletalk: convert some spinlocks to rwlocks Arnaldo Carvalho de Melo
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox