kernel: delete Linux 5.4 config and patches

As the upcoming release will be based on Linux 5.10 only, remove all
kernel configuration as well as patches for Linux 5.4.
There were no targets still actively using Linux 5.4.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 3a14580411adfb75f9a44eded9f41245b9e44606)

1 files changed, 0 insertions, 145 deletions

diff --git a/target/linux/generic/hack-5.4/901-debloat_sock_diag.patch b/target/linux/generic/hack-5.4/901-debloat_sock_diag.patch
deleted file mode 100644
index 0abb672639..0000000000
--- a/target/linux/generic/hack-5.4/901-debloat_sock_diag.patch
+++ /dev/null
@@ -1,145 +0,0 @@
-From 3b6115d6b57a263bdc8c9b1df273bd4a7955eead Mon Sep 17 00:00:00 2001
-From: Felix Fietkau <nbd@nbd.name>
-Date: Sat, 8 Jul 2017 08:16:31 +0200
-Subject: debloat: add some debloat patches, strip down procfs and make O_DIRECT support optional, saves ~15K after lzma on MIPS
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
- net/Kconfig         | 3 +++
- net/core/Makefile   | 3 ++-
- net/core/sock.c     | 2 ++
- net/ipv4/Kconfig    | 1 +
- net/netlink/Kconfig | 1 +
- net/packet/Kconfig  | 1 +
- net/unix/Kconfig    | 1 +
- 7 files changed, 11 insertions(+), 1 deletion(-)
-
---- a/net/Kconfig
-+++ b/net/Kconfig
-@@ -103,6 +103,9 @@ source "net/netlabel/Kconfig"
- 
- endif # if INET
- 
-+config SOCK_DIAG
-+	bool
-+
- config NETWORK_SECMARK
- 	bool "Security Marking"
- 	help
---- a/net/core/Makefile
-+++ b/net/core/Makefile
-@@ -10,9 +10,10 @@ obj-$(CONFIG_SYSCTL) += sysctl_net_core.
- 
- obj-y		     += dev.o ethtool.o dev_addr_lists.o dst.o netevent.o \
- 			neighbour.o rtnetlink.o utils.o link_watch.o filter.o \
--			sock_diag.o dev_ioctl.o tso.o sock_reuseport.o \
-+ 			dev_ioctl.o tso.o sock_reuseport.o \
- 			fib_notifier.o xdp.o flow_offload.o
- 
-+obj-$(CONFIG_SOCK_DIAG) += sock_diag.o
- obj-y += net-sysfs.o
- obj-$(CONFIG_PAGE_POOL) += page_pool.o
- obj-$(CONFIG_PROC_FS) += net-procfs.o
---- a/net/core/sock.c
-+++ b/net/core/sock.c
-@@ -140,6 +140,7 @@
- 
- static DEFINE_MUTEX(proto_list_mutex);
- static LIST_HEAD(proto_list);
-+static atomic64_t cookie_gen;
- 
- static void sock_inuse_add(struct net *net, int val);
- 
-@@ -539,6 +540,18 @@ discard_and_relse:
- }
- EXPORT_SYMBOL(__sk_receive_skb);
- 
-+u64 sock_gen_cookie(struct sock *sk)
-+{
-+	while (1) {
-+		u64 res = atomic64_read(&sk->sk_cookie);
-+
-+		if (res)
-+			return res;
-+		res = atomic64_inc_return(&cookie_gen);
-+		atomic64_cmpxchg(&sk->sk_cookie, 0, res);
-+	}
-+}
-+
- struct dst_entry *__sk_dst_check(struct sock *sk, u32 cookie)
- {
- 	struct dst_entry *dst = __sk_dst_get(sk);
-@@ -1760,9 +1773,11 @@ static void __sk_free(struct sock *sk)
- 	if (likely(sk->sk_net_refcnt))
- 		sock_inuse_add(sock_net(sk), -1);
- 
-+#ifdef CONFIG_SOCK_DIAG
- 	if (unlikely(sk->sk_net_refcnt && sock_diag_has_destroy_listeners(sk)))
- 		sock_diag_broadcast_destroy(sk);
- 	else
-+#endif
- 		sk_destruct(sk);
- }
- 
---- a/net/core/sock_diag.c
-+++ b/net/core/sock_diag.c
-@@ -19,19 +19,6 @@ static const struct sock_diag_handler *s
- static int (*inet_rcv_compat)(struct sk_buff *skb, struct nlmsghdr *nlh);
- static DEFINE_MUTEX(sock_diag_table_mutex);
- static struct workqueue_struct *broadcast_wq;
--static atomic64_t cookie_gen;
--
--u64 sock_gen_cookie(struct sock *sk)
--{
--	while (1) {
--		u64 res = atomic64_read(&sk->sk_cookie);
--
--		if (res)
--			return res;
--		res = atomic64_inc_return(&cookie_gen);
--		atomic64_cmpxchg(&sk->sk_cookie, 0, res);
--	}
--}
- 
- int sock_diag_check_cookie(struct sock *sk, const __u32 *cookie)
- {
---- a/net/ipv4/Kconfig
-+++ b/net/ipv4/Kconfig
-@@ -400,6 +400,7 @@ config INET_TUNNEL
- 
- config INET_DIAG
- 	tristate "INET: socket monitoring interface"
-+	select SOCK_DIAG
- 	default y
- 	---help---
- 	  Support for INET (TCP, DCCP, etc) socket monitoring interface used by
---- a/net/netlink/Kconfig
-+++ b/net/netlink/Kconfig
-@@ -5,6 +5,7 @@
- 
- config NETLINK_DIAG
- 	tristate "NETLINK: socket monitoring interface"
-+	select SOCK_DIAG
- 	default n
- 	---help---
- 	  Support for NETLINK socket monitoring interface used by the ss tool.
---- a/net/packet/Kconfig
-+++ b/net/packet/Kconfig
-@@ -19,6 +19,7 @@ config PACKET
- config PACKET_DIAG
- 	tristate "Packet: sockets monitoring interface"
- 	depends on PACKET
-+	select SOCK_DIAG
- 	default n
- 	---help---
- 	  Support for PF_PACKET sockets monitoring interface used by the ss tool.
---- a/net/unix/Kconfig
-+++ b/net/unix/Kconfig
-@@ -28,6 +28,7 @@ config UNIX_SCM
- config UNIX_DIAG
- 	tristate "UNIX: socket monitoring interface"
- 	depends on UNIX
-+	select SOCK_DIAG
- 	default n
- 	---help---
- 	  Support for UNIX socket monitoring interface used by the ss tool.