kernel: Copy patches from kernel 4.14 to 4.19

This just copies the files from the kernel 4.14 specific folders into
the kernel 4.19 specific folder, no changes are done to the files in
this commit.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 405 insertions, 0 deletions

diff --git a/target/linux/generic/hack-4.19/902-debloat_proc.patch b/target/linux/generic/hack-4.19/902-debloat_proc.patch
new file mode 100644
index 0000000000..cae6d66e7d
--- /dev/null
+++ b/target/linux/generic/hack-4.19/902-debloat_proc.patch
@@ -0,0 +1,405 @@
+From 9e3f1d0805b2d919904dd9a4ff0d956314cc3cba Mon Sep 17 00:00:00 2001
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sat, 8 Jul 2017 08:20:09 +0200
+Subject: debloat: procfs
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+ fs/locks.c               |  2 ++
+ fs/proc/Kconfig          |  5 +++++
+ fs/proc/consoles.c       |  3 +++
+ fs/proc/proc_tty.c       | 11 ++++++++++-
+ include/net/snmp.h       | 18 +++++++++++++++++-
+ ipc/msg.c                |  3 +++
+ ipc/sem.c                |  2 ++
+ ipc/shm.c                |  2 ++
+ ipc/util.c               |  3 +++
+ kernel/exec_domain.c     |  2 ++
+ kernel/irq/proc.c        |  9 +++++++++
+ kernel/time/timer_list.c |  2 ++
+ mm/vmalloc.c             |  2 ++
+ mm/vmstat.c              |  8 +++++---
+ net/8021q/vlanproc.c     |  6 ++++++
+ net/core/net-procfs.c    | 18 ++++++++++++------
+ net/core/sock.c          |  2 ++
+ net/ipv4/fib_trie.c      | 18 ++++++++++++------
+ net/ipv4/proc.c          |  3 +++
+ net/ipv4/route.c         |  3 +++
+ 20 files changed, 105 insertions(+), 17 deletions(-)
+
+--- a/fs/locks.c
++++ b/fs/locks.c
+@@ -2812,6 +2812,8 @@ static const struct file_operations proc
+ 
+ static int __init proc_locks_init(void)
+ {
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED))
++		return 0;
+ 	proc_create("locks", 0, NULL, &proc_locks_operations);
+ 	return 0;
+ }
+--- a/fs/proc/Kconfig
++++ b/fs/proc/Kconfig
+@@ -81,3 +81,8 @@ config PROC_CHILDREN
+ 
+ 	  Say Y if you are running any user-space software which takes benefit from
+ 	  this interface. For example, rkt is such a piece of software.
++
++config PROC_STRIPPED
++	default n
++	depends on EXPERT
++	bool "Strip non-essential /proc functionality to reduce code size"
+--- a/fs/proc/consoles.c
++++ b/fs/proc/consoles.c
+@@ -106,6 +106,9 @@ static const struct file_operations proc
+ 
+ static int __init proc_consoles_init(void)
+ {
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED))
++		return 0;
++
+ 	proc_create("consoles", 0, NULL, &proc_consoles_operations);
+ 	return 0;
+ }
+--- a/fs/proc/proc_tty.c
++++ b/fs/proc/proc_tty.c
+@@ -145,7 +145,10 @@ static const struct file_operations proc
+ void proc_tty_register_driver(struct tty_driver *driver)
+ {
+ 	struct proc_dir_entry *ent;
+-		
++
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED))
++		return;
++
+ 	if (!driver->driver_name || driver->proc_entry ||
+ 	    !driver->ops->proc_fops)
+ 		return;
+@@ -162,6 +165,9 @@ void proc_tty_unregister_driver(struct t
+ {
+ 	struct proc_dir_entry *ent;
+ 
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED))
++		return;
++
+ 	ent = driver->proc_entry;
+ 	if (!ent)
+ 		return;
+@@ -176,6 +182,9 @@ void proc_tty_unregister_driver(struct t
+  */
+ void __init proc_tty_init(void)
+ {
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED))
++		return;
++
+ 	if (!proc_mkdir("tty", NULL))
+ 		return;
+ 	proc_mkdir("tty/ldisc", NULL);	/* Preserved: it's userspace visible */
+--- a/include/net/snmp.h
++++ b/include/net/snmp.h
+@@ -123,6 +123,21 @@ struct linux_xfrm_mib {
+ #define DECLARE_SNMP_STAT(type, name)	\
+ 	extern __typeof__(type) __percpu *name
+ 
++#ifdef CONFIG_PROC_STRIPPED
++#define __SNMP_STATS_DUMMY(mib)	\
++	do { (void) mib->mibs[0]; } while(0)
++
++#define __SNMP_INC_STATS(mib, field) __SNMP_STATS_DUMMY(mib)
++#define SNMP_INC_STATS_ATOMIC_LONG(mib, field) __SNMP_STATS_DUMMY(mib)
++#define SNMP_INC_STATS(mib, field) __SNMP_STATS_DUMMY(mib)
++#define SNMP_DEC_STATS(mib, field) __SNMP_STATS_DUMMY(mib)
++#define __SNMP_ADD_STATS(mib, field, addend) __SNMP_STATS_DUMMY(mib)
++#define SNMP_ADD_STATS(mib, field, addend) __SNMP_STATS_DUMMY(mib)
++#define SNMP_UPD_PO_STATS(mib, basefield, addend) __SNMP_STATS_DUMMY(mib)
++#define __SNMP_UPD_PO_STATS(mib, basefield, addend) __SNMP_STATS_DUMMY(mib)
++
++#else
++
+ #define __SNMP_INC_STATS(mib, field)	\
+ 			__this_cpu_inc(mib->mibs[field])
+ 
+@@ -153,8 +168,9 @@ struct linux_xfrm_mib {
+ 		__this_cpu_add(ptr[basefield##OCTETS], addend);	\
+ 	} while (0)
+ 
++#endif
+ 
+-#if BITS_PER_LONG==32
++#if (BITS_PER_LONG==32) && !defined(CONFIG_PROC_STRIPPED)
+ 
+ #define __SNMP_ADD_STATS64(mib, field, addend) 				\
+ 	do {								\
+--- a/ipc/msg.c
++++ b/ipc/msg.c
+@@ -1208,6 +1208,9 @@ int __init msg_init(void)
+ {
+ 	const int err = msg_init_ns(&init_ipc_ns);
+ 
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED))
++		return err;
++
+ 	ipc_init_proc_interface("sysvipc/msg",
+ 				"       key      msqid perms      cbytes       qnum lspid lrpid   uid   gid  cuid  cgid      stime      rtime      ctime\n",
+ 				IPC_MSG_IDS, sysvipc_msg_proc_show);
+--- a/ipc/sem.c
++++ b/ipc/sem.c
+@@ -207,6 +207,8 @@ int __init sem_init(void)
+ {
+ 	const int err = sem_init_ns(&init_ipc_ns);
+ 
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED))
++		return err;
+ 	ipc_init_proc_interface("sysvipc/sem",
+ 				"       key      semid perms      nsems   uid   gid  cuid  cgid      otime      ctime\n",
+ 				IPC_SEM_IDS, sysvipc_sem_proc_show);
+--- a/ipc/shm.c
++++ b/ipc/shm.c
+@@ -122,6 +122,8 @@ pure_initcall(ipc_ns_init);
+ 
+ void __init shm_init(void)
+ {
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED))
++		return;
+ 	ipc_init_proc_interface("sysvipc/shm",
+ #if BITS_PER_LONG <= 32
+ 				"       key      shmid perms       size  cpid  lpid nattch   uid   gid  cuid  cgid      atime      dtime      ctime        rss       swap\n",
+--- a/ipc/util.c
++++ b/ipc/util.c
+@@ -141,6 +141,9 @@ void __init ipc_init_proc_interface(cons
+ 	struct proc_dir_entry *pde;
+ 	struct ipc_proc_iface *iface;
+ 
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED))
++		return;
++
+ 	iface = kmalloc(sizeof(*iface), GFP_KERNEL);
+ 	if (!iface)
+ 		return;
+--- a/kernel/exec_domain.c
++++ b/kernel/exec_domain.c
+@@ -42,6 +42,8 @@ static const struct file_operations exec
+ 
+ static int __init proc_execdomains_init(void)
+ {
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED))
++		return 0;
+ 	proc_create("execdomains", 0, NULL, &execdomains_proc_fops);
+ 	return 0;
+ }
+--- a/kernel/irq/proc.c
++++ b/kernel/irq/proc.c
+@@ -396,6 +396,9 @@ void register_irq_proc(unsigned int irq,
+ 	void __maybe_unused *irqp = (void *)(unsigned long) irq;
+ 	char name [MAX_NAMELEN];
+ 
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED) && !IS_ENABLED(CONFIG_SMP))
++		return;
++
+ 	if (!root_irq_dir || (desc->irq_data.chip == &no_irq_chip))
+ 		return;
+ 
+@@ -449,6 +452,9 @@ void unregister_irq_proc(unsigned int ir
+ {
+ 	char name [MAX_NAMELEN];
+ 
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED) && !IS_ENABLED(CONFIG_SMP))
++		return;
++
+ 	if (!root_irq_dir || !desc->dir)
+ 		return;
+ #ifdef CONFIG_SMP
+@@ -487,6 +493,9 @@ void init_irq_proc(void)
+ 	unsigned int irq;
+ 	struct irq_desc *desc;
+ 
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED) && !IS_ENABLED(CONFIG_SMP))
++		return;
++
+ 	/* create /proc/irq */
+ 	root_irq_dir = proc_mkdir("irq", NULL);
+ 	if (!root_irq_dir)
+--- a/kernel/time/timer_list.c
++++ b/kernel/time/timer_list.c
+@@ -389,6 +389,8 @@ static int __init init_timer_list_procfs
+ {
+ 	struct proc_dir_entry *pe;
+ 
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED))
++		return 0;
+ 	pe = proc_create("timer_list", 0444, NULL, &timer_list_fops);
+ 	if (!pe)
+ 		return -ENOMEM;
+--- a/mm/vmalloc.c
++++ b/mm/vmalloc.c
+@@ -2770,6 +2770,8 @@ static const struct file_operations proc
+ 
+ static int __init proc_vmalloc_init(void)
+ {
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED))
++		return 0;
+ 	proc_create("vmallocinfo", S_IRUSR, NULL, &proc_vmalloc_operations);
+ 	return 0;
+ }
+--- a/mm/vmstat.c
++++ b/mm/vmstat.c
+@@ -1955,10 +1955,12 @@ void __init init_mm_internals(void)
+ 	start_shepherd_timer();
+ #endif
+ #ifdef CONFIG_PROC_FS
+-	proc_create("buddyinfo", 0444, NULL, &buddyinfo_file_operations);
+-	proc_create("pagetypeinfo", 0444, NULL, &pagetypeinfo_file_operations);
++	if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
++		proc_create("buddyinfo", 0444, NULL, &buddyinfo_file_operations);
++		proc_create("pagetypeinfo", 0444, NULL, &pagetypeinfo_file_operations);
++		proc_create("zoneinfo", 0444, NULL, &zoneinfo_file_operations);
++	}
+ 	proc_create("vmstat", 0444, NULL, &vmstat_file_operations);
+-	proc_create("zoneinfo", 0444, NULL, &zoneinfo_file_operations);
+ #endif
+ }
+ 
+--- a/net/8021q/vlanproc.c
++++ b/net/8021q/vlanproc.c
+@@ -127,6 +127,9 @@ void vlan_proc_cleanup(struct net *net)
+ {
+ 	struct vlan_net *vn = net_generic(net, vlan_net_id);
+ 
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED))
++		return;
++
+ 	if (vn->proc_vlan_conf)
+ 		remove_proc_entry(name_conf, vn->proc_vlan_dir);
+ 
+@@ -146,6 +149,9 @@ int __net_init vlan_proc_init(struct net
+ {
+ 	struct vlan_net *vn = net_generic(net, vlan_net_id);
+ 
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED))
++		return 0;
++
+ 	vn->proc_vlan_dir = proc_net_mkdir(net, name_root, net->proc_net);
+ 	if (!vn->proc_vlan_dir)
+ 		goto err;
+--- a/net/core/net-procfs.c
++++ b/net/core/net-procfs.c
+@@ -320,10 +320,12 @@ static int __net_init dev_proc_net_init(
+ 
+ 	if (!proc_create("dev", S_IRUGO, net->proc_net, &dev_seq_fops))
+ 		goto out;
+-	if (!proc_create("softnet_stat", S_IRUGO, net->proc_net,
++	if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
++		!proc_create("softnet_stat", S_IRUGO, net->proc_net,
+ 			 &softnet_seq_fops))
+ 		goto out_dev;
+-	if (!proc_create("ptype", S_IRUGO, net->proc_net, &ptype_seq_fops))
++	if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
++		!proc_create("ptype", S_IRUGO, net->proc_net, &ptype_seq_fops))
+ 		goto out_softnet;
+ 
+ 	if (wext_proc_init(net))
+@@ -332,9 +334,11 @@ static int __net_init dev_proc_net_init(
+ out:
+ 	return rc;
+ out_ptype:
+-	remove_proc_entry("ptype", net->proc_net);
++	if (!IS_ENABLED(CONFIG_PROC_STRIPPED))
++		remove_proc_entry("ptype", net->proc_net);
+ out_softnet:
+-	remove_proc_entry("softnet_stat", net->proc_net);
++	if (!IS_ENABLED(CONFIG_PROC_STRIPPED))
++		remove_proc_entry("softnet_stat", net->proc_net);
+ out_dev:
+ 	remove_proc_entry("dev", net->proc_net);
+ 	goto out;
+@@ -344,8 +348,10 @@ static void __net_exit dev_proc_net_exit
+ {
+ 	wext_proc_exit(net);
+ 
+-	remove_proc_entry("ptype", net->proc_net);
+-	remove_proc_entry("softnet_stat", net->proc_net);
++	if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
++		remove_proc_entry("ptype", net->proc_net);
++		remove_proc_entry("softnet_stat", net->proc_net);
++	}
+ 	remove_proc_entry("dev", net->proc_net);
+ }
+ 
+--- a/net/core/sock.c
++++ b/net/core/sock.c
+@@ -3378,6 +3378,8 @@ static __net_initdata struct pernet_oper
+ 
+ static int __init proto_init(void)
+ {
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED))
++		return 0;
+ 	return register_pernet_subsys(&proto_net_ops);
+ }
+ 
+--- a/net/ipv4/fib_trie.c
++++ b/net/ipv4/fib_trie.c
+@@ -2731,10 +2731,12 @@ static const struct file_operations fib_
+ 
+ int __net_init fib_proc_init(struct net *net)
+ {
+-	if (!proc_create("fib_trie", S_IRUGO, net->proc_net, &fib_trie_fops))
++	if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
++		!proc_create("fib_trie", S_IRUGO, net->proc_net, &fib_trie_fops))
+ 		goto out1;
+ 
+-	if (!proc_create("fib_triestat", S_IRUGO, net->proc_net,
++	if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
++		!proc_create("fib_triestat", S_IRUGO, net->proc_net,
+ 			 &fib_triestat_fops))
+ 		goto out2;
+ 
+@@ -2744,17 +2746,21 @@ int __net_init fib_proc_init(struct net
+ 	return 0;
+ 
+ out3:
+-	remove_proc_entry("fib_triestat", net->proc_net);
++	if (!IS_ENABLED(CONFIG_PROC_STRIPPED))
++		remove_proc_entry("fib_triestat", net->proc_net);
+ out2:
+-	remove_proc_entry("fib_trie", net->proc_net);
++	if (!IS_ENABLED(CONFIG_PROC_STRIPPED))
++		remove_proc_entry("fib_trie", net->proc_net);
+ out1:
+ 	return -ENOMEM;
+ }
+ 
+ void __net_exit fib_proc_exit(struct net *net)
+ {
+-	remove_proc_entry("fib_trie", net->proc_net);
+-	remove_proc_entry("fib_triestat", net->proc_net);
++	if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
++		remove_proc_entry("fib_trie", net->proc_net);
++		remove_proc_entry("fib_triestat", net->proc_net);
++	}
+ 	remove_proc_entry("route", net->proc_net);
+ }
+ 
+--- a/net/ipv4/proc.c
++++ b/net/ipv4/proc.c
+@@ -558,6 +558,9 @@ static __net_initdata struct pernet_oper
+ 
+ int __init ip_misc_proc_init(void)
+ {
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED))
++		return 0;
++
+ 	return register_pernet_subsys(&ip_proc_ops);
+ }
+ 
+--- a/net/ipv4/route.c
++++ b/net/ipv4/route.c
+@@ -427,6 +427,9 @@ static struct pernet_operations ip_rt_pr
+ 
+ static int __init ip_rt_proc_init(void)
+ {
++	if (IS_ENABLED(CONFIG_PROC_STRIPPED))
++		return 0;
++
+ 	return register_pernet_subsys(&ip_rt_proc_ops);
+ }
+