3 @@ -2267,6 +2267,8 @@ static const struct file_operations proc
5 static int __init proc_locks_init(void)
7 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
9 proc_create("locks", 0, NULL, &proc_locks_operations);
14 @@ -67,3 +67,8 @@ config PROC_PAGE_MONITOR
15 /proc/pid/smaps, /proc/pid/clear_refs, /proc/pid/pagemap,
16 /proc/kpagecount, and /proc/kpageflags. Disabling these
17 interfaces will reduce the size of the kernel by approximately 4kb.
22 + bool "Strip non-essential /proc functionality to reduce code size"
23 --- a/fs/proc/consoles.c
24 +++ b/fs/proc/consoles.c
25 @@ -108,6 +108,9 @@ static const struct file_operations proc
27 static int __init proc_consoles_init(void)
29 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
32 proc_create("consoles", 0, NULL, &proc_consoles_operations);
35 --- a/fs/proc/proc_tty.c
36 +++ b/fs/proc/proc_tty.c
37 @@ -143,7 +143,10 @@ static const struct file_operations proc
38 void proc_tty_register_driver(struct tty_driver *driver)
40 struct proc_dir_entry *ent;
43 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
46 if (!driver->driver_name || driver->proc_entry ||
47 !driver->ops->proc_fops)
49 @@ -160,6 +163,9 @@ void proc_tty_unregister_driver(struct t
51 struct proc_dir_entry *ent;
53 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
56 ent = driver->proc_entry;
59 @@ -174,6 +180,9 @@ void proc_tty_unregister_driver(struct t
61 void __init proc_tty_init(void)
63 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
66 if (!proc_mkdir("tty", NULL))
68 proc_tty_ldisc = proc_mkdir("tty/ldisc", NULL);
69 --- a/kernel/exec_domain.c
70 +++ b/kernel/exec_domain.c
71 @@ -173,6 +173,8 @@ static const struct file_operations exec
73 static int __init proc_execdomains_init(void)
75 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
77 proc_create("execdomains", 0, NULL, &execdomains_proc_fops);
80 --- a/kernel/irq/proc.c
81 +++ b/kernel/irq/proc.c
82 @@ -311,6 +311,9 @@ void register_irq_proc(unsigned int irq,
84 char name [MAX_NAMELEN];
86 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
89 if (!root_irq_dir || (desc->irq_data.chip == &no_irq_chip) || desc->dir)
92 @@ -347,6 +350,9 @@ void unregister_irq_proc(unsigned int ir
94 char name [MAX_NAMELEN];
96 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
99 if (!root_irq_dir || !desc->dir)
102 @@ -386,6 +392,9 @@ void init_irq_proc(void)
104 struct irq_desc *desc;
106 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
109 /* create /proc/irq */
110 root_irq_dir = proc_mkdir("irq", NULL);
112 --- a/kernel/time/timer_list.c
113 +++ b/kernel/time/timer_list.c
114 @@ -293,6 +293,8 @@ static int __init init_timer_list_procfs
116 struct proc_dir_entry *pe;
118 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
120 pe = proc_create("timer_list", 0444, NULL, &timer_list_fops);
125 @@ -2638,6 +2638,8 @@ static const struct file_operations proc
127 static int __init proc_vmalloc_init(void)
129 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
131 proc_create("vmallocinfo", S_IRUSR, NULL, &proc_vmalloc_operations);
136 @@ -1238,10 +1238,12 @@ static int __init setup_vmstat(void)
137 start_cpu_timer(cpu);
139 #ifdef CONFIG_PROC_FS
140 - proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations);
141 - proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops);
142 + if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
143 + proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations);
144 + proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops);
145 + proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations);
147 proc_create("vmstat", S_IRUGO, NULL, &proc_vmstat_file_operations);
148 - proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations);
152 --- a/net/8021q/vlanproc.c
153 +++ b/net/8021q/vlanproc.c
154 @@ -127,6 +127,9 @@ void vlan_proc_cleanup(struct net *net)
156 struct vlan_net *vn = net_generic(net, vlan_net_id);
158 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
161 if (vn->proc_vlan_conf)
162 remove_proc_entry(name_conf, vn->proc_vlan_dir);
164 @@ -146,6 +149,9 @@ int __net_init vlan_proc_init(struct net
166 struct vlan_net *vn = net_generic(net, vlan_net_id);
168 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
171 vn->proc_vlan_dir = proc_net_mkdir(net, name_root, net->proc_net);
172 if (!vn->proc_vlan_dir)
176 @@ -4578,9 +4578,11 @@ static int __net_init dev_proc_net_init(
178 if (!proc_net_fops_create(net, "dev", S_IRUGO, &dev_seq_fops))
180 - if (!proc_net_fops_create(net, "softnet_stat", S_IRUGO, &softnet_seq_fops))
181 + if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
182 + !proc_net_fops_create(net, "softnet_stat", S_IRUGO, &softnet_seq_fops))
184 - if (!proc_net_fops_create(net, "ptype", S_IRUGO, &ptype_seq_fops))
185 + if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
186 + !proc_net_fops_create(net, "ptype", S_IRUGO, &ptype_seq_fops))
189 if (wext_proc_init(net))
190 @@ -4589,9 +4591,11 @@ static int __net_init dev_proc_net_init(
194 - proc_net_remove(net, "ptype");
195 + if (!IS_ENABLED(CONFIG_PROC_STRIPPED))
196 + proc_net_remove(net, "ptype");
198 - proc_net_remove(net, "softnet_stat");
199 + if (!IS_ENABLED(CONFIG_PROC_STRIPPED))
200 + proc_net_remove(net, "softnet_stat");
202 proc_net_remove(net, "dev");
204 @@ -4601,8 +4605,10 @@ static void __net_exit dev_proc_net_exit
208 - proc_net_remove(net, "ptype");
209 - proc_net_remove(net, "softnet_stat");
210 + if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
211 + proc_net_remove(net, "ptype");
212 + proc_net_remove(net, "softnet_stat");
214 proc_net_remove(net, "dev");
217 --- a/net/core/sock.c
218 +++ b/net/core/sock.c
219 @@ -2837,6 +2837,8 @@ static __net_initdata struct pernet_oper
221 static int __init proto_init(void)
223 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
225 return register_pernet_subsys(&proto_net_ops);
228 --- a/net/ipv4/fib_trie.c
229 +++ b/net/ipv4/fib_trie.c
230 @@ -2607,10 +2607,12 @@ static const struct file_operations fib_
232 int __net_init fib_proc_init(struct net *net)
234 - if (!proc_net_fops_create(net, "fib_trie", S_IRUGO, &fib_trie_fops))
235 + if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
236 + !proc_net_fops_create(net, "fib_trie", S_IRUGO, &fib_trie_fops))
239 - if (!proc_net_fops_create(net, "fib_triestat", S_IRUGO,
240 + if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
241 + !proc_net_fops_create(net, "fib_triestat", S_IRUGO,
245 @@ -2629,8 +2631,10 @@ out1:
247 void __net_exit fib_proc_exit(struct net *net)
249 - proc_net_remove(net, "fib_trie");
250 - proc_net_remove(net, "fib_triestat");
251 + if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
252 + proc_net_remove(net, "fib_trie");
253 + proc_net_remove(net, "fib_triestat");
255 proc_net_remove(net, "route");
258 --- a/net/ipv4/igmp.c
259 +++ b/net/ipv4/igmp.c
260 @@ -2673,6 +2673,8 @@ static struct pernet_operations igmp_net
262 int __init igmp_mc_proc_init(void)
264 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
266 return register_pernet_subsys(&igmp_net_ops);
269 --- a/net/ipv4/ipmr.c
270 +++ b/net/ipv4/ipmr.c
272 #define CONFIG_IP_PIMSM 1
275 +#ifdef CONFIG_PROC_STRIPPED
276 +#undef CONFIG_PROC_FS
280 struct list_head list;
282 --- a/net/ipv4/proc.c
283 +++ b/net/ipv4/proc.c
284 @@ -502,6 +502,9 @@ static __net_initdata struct pernet_oper
286 int __init ip_misc_proc_init(void)
288 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
291 return register_pernet_subsys(&ip_proc_ops);
294 --- a/net/ipv4/route.c
295 +++ b/net/ipv4/route.c
296 @@ -427,6 +427,9 @@ static struct pernet_operations ip_rt_pr
298 static int __init ip_rt_proc_init(void)
300 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
303 return register_pernet_subsys(&ip_rt_proc_ops);
308 @@ -135,6 +135,9 @@ void __init msg_init(void)
309 printk(KERN_INFO "msgmni has been set to %d\n",
310 init_ipc_ns.msg_ctlmni);
312 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
315 ipc_init_proc_interface("sysvipc/msg",
316 " key msqid perms cbytes qnum lspid lrpid uid gid cuid cgid stime rtime ctime\n",
317 IPC_MSG_IDS, sysvipc_msg_proc_show);
320 @@ -185,6 +185,8 @@ void sem_exit_ns(struct ipc_namespace *n
321 void __init sem_init (void)
323 sem_init_ns(&init_ipc_ns);
324 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
326 ipc_init_proc_interface("sysvipc/sem",
327 " key semid perms nsems uid gid cuid cgid otime ctime\n",
328 IPC_SEM_IDS, sysvipc_sem_proc_show);
331 @@ -115,6 +115,8 @@ pure_initcall(ipc_ns_init);
333 void __init shm_init (void)
335 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
337 ipc_init_proc_interface("sysvipc/shm",
338 #if BITS_PER_LONG <= 32
339 " key shmid perms size cpid lpid nattch uid gid cuid cgid atime dtime ctime rss swap\n",
342 @@ -148,6 +148,9 @@ void __init ipc_init_proc_interface(cons
343 struct proc_dir_entry *pde;
344 struct ipc_proc_iface *iface;
346 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
349 iface = kmalloc(sizeof(*iface), GFP_KERNEL);