uml: update to linux 4.4

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@48265 3c298f89-4303-0410-b956-a3cf2f4a3e73

8 files changed, 52 insertions, 180 deletions

diff --git a/target/linux/uml/Makefile b/target/linux/uml/Makefile
index 715cdc7071..be27179151 100644
--- a/target/linux/uml/Makefile
+++ b/target/linux/uml/Makefile
@@ -23,7 +23,7 @@ BOARDNAME:=User Mode Linux
 FEATURES:=ext4 audio
 MAINTAINER:=Florian Fainelli <florian@openwrt.org>
 
-KERNEL_PATCHVER:=4.1
+KERNEL_PATCHVER:=4.4
 
 include $(INCLUDE_DIR)/target.mk
 
diff --git a/target/linux/uml/config/i386 b/target/linux/uml/config/i386
index 9521706346..6893ee02fa 100644
--- a/target/linux/uml/config/i386
+++ b/target/linux/uml/config/i386
@@ -55,7 +55,6 @@ CONFIG_HAVE_NET_DSA=y
 CONFIG_HAVE_UID16=y
 CONFIG_HOSTAUDIO=m
 CONFIG_HOSTFS=y
-# CONFIG_HPPFS is not set
 CONFIG_HZ_PERIODIC=y
 CONFIG_INITRAMFS_SOURCE=""
 CONFIG_INIT_ENV_ARG_LIMIT=128
@@ -105,9 +104,9 @@ CONFIG_NO_DMA=y
 CONFIG_NO_IOMEM=y
 # CONFIG_NSC_GPIO is not set
 CONFIG_NULL_CHAN=y
+# CONFIG_OF is not set
 CONFIG_OLD_SIGACTION=y
 CONFIG_OLD_SIGSUSPEND3=y
-CONFIG_PAGEFLAGS_EXTENDED=y
 CONFIG_PGTABLE_LEVELS=2
 CONFIG_PORT_CHAN=y
 CONFIG_POSIX_MQUEUE=y
@@ -128,6 +127,7 @@ CONFIG_RD_GZIP=y
 CONFIG_RELAY=y
 # CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
 # CONFIG_SBC8360_WDT is not set
+# CONFIG_SCHED_INFO is not set
 # CONFIG_SCSI_DMA is not set
 CONFIG_SOFT_WATCHDOG=m
 CONFIG_SOUND=m
@@ -140,10 +140,10 @@ CONFIG_SSL_CHAN="pty"
 CONFIG_STACKTRACE=y
 CONFIG_STATIC_LINK=y
 CONFIG_STDERR_CONSOLE=y
+# CONFIG_SUNXI_SRAM is not set
 CONFIG_TICK_CPU_ACCOUNTING=y
 # CONFIG_TRACE_IRQFLAGS_SUPPORT is not set
 CONFIG_TTY_CHAN=y
-CONFIG_UID16=y
 CONFIG_UML=y
 CONFIG_UML_NET=y
 CONFIG_UML_NET_DAEMON=y
diff --git a/target/linux/uml/config/x86_64 b/target/linux/uml/config/x86_64
index be25a2ea51..29ef1c11ae 100644
--- a/target/linux/uml/config/x86_64
+++ b/target/linux/uml/config/x86_64
@@ -56,7 +56,6 @@ CONFIG_HAVE_UID16=y
 CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
 CONFIG_HOSTAUDIO=m
 CONFIG_HOSTFS=y
-# CONFIG_HPPFS is not set
 CONFIG_HZ_PERIODIC=y
 CONFIG_INITRAMFS_SOURCE=""
 CONFIG_INIT_ENV_ARG_LIMIT=128
@@ -84,7 +83,7 @@ CONFIG_NLS=y
 CONFIG_NO_DMA=y
 CONFIG_NO_IOMEM=y
 CONFIG_NULL_CHAN=y
-CONFIG_PAGEFLAGS_EXTENDED=y
+# CONFIG_OF is not set
 CONFIG_PGTABLE_LEVELS=3
 CONFIG_PHYS_ADDR_T_64BIT=y
 CONFIG_PORT_CHAN=y
@@ -106,6 +105,7 @@ CONFIG_RD_GZIP=y
 CONFIG_RELAY=y
 # CONFIG_RWSEM_GENERIC_SPINLOCK is not set
 CONFIG_RWSEM_XCHGADD_ALGORITHM=y
+# CONFIG_SCHED_INFO is not set
 # CONFIG_SCSI_DMA is not set
 CONFIG_SOFT_WATCHDOG=m
 CONFIG_SOUND=m
@@ -118,10 +118,10 @@ CONFIG_SSL_CHAN="pty"
 CONFIG_STACKTRACE=y
 CONFIG_STATIC_LINK=y
 CONFIG_STDERR_CONSOLE=y
+# CONFIG_SUNXI_SRAM is not set
 CONFIG_TICK_CPU_ACCOUNTING=y
 # CONFIG_TRACE_IRQFLAGS_SUPPORT is not set
 CONFIG_TTY_CHAN=y
-CONFIG_UID16=y
 CONFIG_UML=y
 CONFIG_UML_NET=y
 CONFIG_UML_NET_DAEMON=y
@@ -137,7 +137,6 @@ CONFIG_UML_RANDOM=y
 CONFIG_UML_SOUND=m
 CONFIG_UML_WATCHDOG=m
 CONFIG_UML_X86=y
-# CONFIG_UNISYSSPAR is not set
 # CONFIG_USER_NS is not set
 CONFIG_VM_EVENT_COUNTERS=y
 CONFIG_WATCHDOG_CORE=y
diff --git a/target/linux/uml/patches-4.1/001-um-Stop-abusing-__KERNEL__.patch b/target/linux/uml/patches-4.1/001-um-Stop-abusing-__KERNEL__.patch
deleted file mode 100644
index a46a5be406..0000000000
--- a/target/linux/uml/patches-4.1/001-um-Stop-abusing-__KERNEL__.patch
+++ /dev/null
@@ -1,94 +0,0 @@
-From: Richard Weinberger <richard@nod.at>
-Date: Sun, 31 May 2015 19:50:57 +0200
-Subject: [PATCH] um: Stop abusing __KERNEL__
-
-Currently UML is abusing __KERNEL__ to distinguish between
-kernel and host code (os-Linux). It is better to use a custom
-define such that existing users of __KERNEL__ don't get confused.
-
-Signed-off-by: Richard Weinberger <richard@nod.at>
----
-
---- a/arch/um/drivers/mconsole.h
-+++ b/arch/um/drivers/mconsole.h
-@@ -7,7 +7,7 @@
- #ifndef __MCONSOLE_H__
- #define __MCONSOLE_H__
- 
--#ifndef __KERNEL__
-+#ifdef __UM_HOST__
- #include <stdint.h>
- #define u32 uint32_t
- #endif
---- a/arch/um/include/shared/init.h
-+++ b/arch/um/include/shared/init.h
-@@ -40,7 +40,7 @@
- typedef int (*initcall_t)(void);
- typedef void (*exitcall_t)(void);
- 
--#ifndef __KERNEL__
-+#ifdef __UM_HOST__
- #ifndef __section
- # define __section(S) __attribute__ ((__section__(#S)))
- #endif
-@@ -131,7 +131,7 @@ extern struct uml_param __uml_setup_star
- #define __uml_postsetup_call	__used __section(.uml.postsetup.init)
- #define __uml_exit_call		__used __section(.uml.exitcall.exit)
- 
--#ifndef __KERNEL__
-+#ifdef __UM_HOST__
- 
- #define __define_initcall(level,fn) \
- 	static initcall_t __initcall_##fn __used \
---- a/arch/um/include/shared/user.h
-+++ b/arch/um/include/shared/user.h
-@@ -17,7 +17,7 @@
- #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
- 
- /* This is to get size_t */
--#ifdef __KERNEL__
-+#ifndef __UM_HOST__
- #include <linux/types.h>
- #else
- #include <stddef.h>
---- a/arch/um/Makefile
-+++ b/arch/um/Makefile
-@@ -68,9 +68,10 @@ KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -
- 
- KBUILD_AFLAGS += $(ARCH_INCLUDE)
- 
--USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\
--	$(patsubst -I%,,$(KBUILD_CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \
--	$(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64 -idirafter include
-+USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -I%,,$(KBUILD_CFLAGS))) \
-+		$(ARCH_INCLUDE) $(MODE_INCLUDE) $(filter -I%,$(CFLAGS)) \
-+		-D_FILE_OFFSET_BITS=64 -idirafter include \
-+		-D__KERNEL__ -D__UM_HOST__
- 
- #This will adjust *FLAGS accordingly to the platform.
- include $(ARCH_DIR)/Makefile-os-$(OS)
---- a/arch/x86/um/shared/sysdep/tls.h
-+++ b/arch/x86/um/shared/sysdep/tls.h
-@@ -1,7 +1,7 @@
- #ifndef _SYSDEP_TLS_H
- #define _SYSDEP_TLS_H
- 
--# ifndef __KERNEL__
-+#ifdef __UM_HOST__
- 
- /* Change name to avoid conflicts with the original one from <asm/ldt.h>, which
-  * may be named user_desc (but in 2.4 and in header matching its API was named
-@@ -22,11 +22,11 @@ typedef struct um_dup_user_desc {
- #endif
- } user_desc_t;
- 
--# else /* __KERNEL__ */
-+#else /* __UM_HOST__ */
- 
- typedef struct user_desc user_desc_t;
- 
--# endif /* __KERNEL__ */
-+#endif /* __UM_HOST__ */
- 
- extern int os_set_thread_area(user_desc_t *info, int pid);
- extern int os_get_thread_area(user_desc_t *info, int pid);
diff --git a/target/linux/uml/patches-4.1/002-um-Remove-copy-paste-code-from-init.h.patch b/target/linux/uml/patches-4.1/002-um-Remove-copy-paste-code-from-init.h.patch
deleted file mode 100644
index 6733384b91..0000000000
--- a/target/linux/uml/patches-4.1/002-um-Remove-copy-paste-code-from-init.h.patch
+++ /dev/null
@@ -1,44 +0,0 @@
-From: Richard Weinberger <richard@nod.at>
-Date: Sun, 31 May 2015 22:15:58 +0200
-Subject: [PATCH] um: Remove copy&paste code from init.h
-
-As we got rid of the __KERNEL__ abuse, we can directly
-include linux/compiler.h now.
-This also allows gcc 5 to build UML.
-
-Reported-by: Hans-Werner Hilse <hwhilse@gmail.com>
-Signed-off-by: Richard Weinberger <richard@nod.at>
----
-
---- a/arch/um/include/shared/init.h
-+++ b/arch/um/include/shared/init.h
-@@ -40,28 +40,8 @@
- typedef int (*initcall_t)(void);
- typedef void (*exitcall_t)(void);
- 
--#ifdef __UM_HOST__
--#ifndef __section
--# define __section(S) __attribute__ ((__section__(#S)))
--#endif
--
--#if __GNUC__ == 3
--
--#if __GNUC_MINOR__ >= 3
--# define __used			__attribute__((__used__))
--#else
--# define __used			__attribute__((__unused__))
--#endif
--
--#else
--#if __GNUC__ == 4
--# define __used			__attribute__((__used__))
--#endif
--#endif
--
--#else
- #include <linux/compiler.h>
--#endif
-+
- /* These are for everybody (although not all archs will actually
-    discard it in modules) */
- #define __init		__section(.init.text)
diff --git a/target/linux/uml/patches-4.4/100-link-libpthread.patch b/target/linux/uml/patches-4.4/100-link-libpthread.patch
new file mode 100644
index 0000000000..297f6d528f
--- /dev/null
+++ b/target/linux/uml/patches-4.4/100-link-libpthread.patch
@@ -0,0 +1,11 @@
+--- a/scripts/link-vmlinux.sh
++++ b/scripts/link-vmlinux.sh
+@@ -62,7 +62,7 @@
+ 			-Wl,--start-group                                    \
+ 				 ${KBUILD_VMLINUX_MAIN}                      \
+ 			-Wl,--end-group                                      \
+-			-lutil -lrt ${1}
++			-lutil -lrt -lpthread ${1}
+ 		rm -f linux
+ 	fi
+ }
diff --git a/target/linux/uml/patches-4.1/101-mconsole-exec.patch b/target/linux/uml/patches-4.4/101-mconsole-exec.patch
index ac300a9293..98f04f4a62 100644
--- a/target/linux/uml/patches-4.1/101-mconsole-exec.patch
+++ b/target/linux/uml/patches-4.4/101-mconsole-exec.patch
@@ -17,7 +17,7 @@
 #
 --- a/arch/um/drivers/mconsole.h
 +++ b/arch/um/drivers/mconsole.h
-@@ -85,6 +85,7 @@ extern void mconsole_cad(struct mc_reque
+@@ -85,6 +85,7 @@
  extern void mconsole_stop(struct mc_request *req);
  extern void mconsole_go(struct mc_request *req);
  extern void mconsole_log(struct mc_request *req);
@@ -43,7 +43,7 @@
  #include <asm/uaccess.h>
  #include <asm/switch_to.h>
  
-@@ -121,6 +123,59 @@ void mconsole_log(struct mc_request *req
+@@ -121,6 +123,59 @@
  	mconsole_reply(req, "", 0, 0);
  }
  
@@ -103,7 +103,7 @@
  void mconsole_proc(struct mc_request *req)
  {
  	struct vfsmount *mnt = task_active_pid_ns(current)->proc_mnt;
-@@ -187,6 +242,7 @@ void mconsole_proc(struct mc_request *re
+@@ -187,6 +242,7 @@
      stop - pause the UML; it will do nothing until it receives a 'go' \n\
      go - continue the UML after a 'stop' \n\
      log <string> - make UML enter <string> into the kernel log\n\
@@ -113,7 +113,7 @@
  "
 --- a/arch/um/drivers/mconsole_user.c
 +++ b/arch/um/drivers/mconsole_user.c
-@@ -30,6 +30,7 @@ static struct mconsole_command commands[
+@@ -30,6 +30,7 @@
  	{ "stop", mconsole_stop, MCONSOLE_PROC },
  	{ "go", mconsole_go, MCONSOLE_INTR },
  	{ "log", mconsole_log, MCONSOLE_INTR },
@@ -123,7 +123,7 @@
  };
 --- a/arch/um/os-Linux/file.c
 +++ b/arch/um/os-Linux/file.c
-@@ -534,6 +534,8 @@ int os_create_unix_socket(const char *fi
+@@ -535,6 +535,8 @@
  
  	addr.sun_family = AF_UNIX;
  
@@ -134,7 +134,7 @@
  	err = bind(sock, (struct sockaddr *) &addr, sizeof(addr));
 --- a/include/linux/kmod.h
 +++ b/include/linux/kmod.h
-@@ -62,6 +62,7 @@ struct subprocess_info {
+@@ -62,6 +62,7 @@
  	int wait;
  	int retval;
  	int (*init)(struct subprocess_info *info, struct cred *new);
@@ -142,7 +142,7 @@
  	void (*cleanup)(struct subprocess_info *info);
  	void *data;
  };
-@@ -104,4 +105,6 @@ extern int usermodehelper_read_trylock(v
+@@ -102,4 +103,6 @@
  extern long usermodehelper_read_lock_wait(long timeout);
  extern void usermodehelper_read_unlock(void);
  
@@ -159,36 +159,36 @@
  #include <asm/uaccess.h>
  
  #include <trace/events/module.h>
-@@ -223,6 +224,28 @@ static int ____call_usermodehelper(void
+@@ -222,6 +223,28 @@
  	flush_signal_handlers(current, 1);
  	spin_unlock_irq(&current->sighand->siglock);
  
-+        /* Install output when needed */
-+        if (sub_info->stdout) {
-+                struct files_struct *f = current->files;
-+                struct fdtable *fdt;
++	/* Install output when needed */
++	if (sub_info->stdout) {
++		struct files_struct *f = current->files;
++		struct fdtable *fdt;
 +
-+                sys_close(1);
-+                sys_close(2);
-+                get_file(sub_info->stdout);
-+                fd_install(1, sub_info->stdout);
-+                fd_install(2, sub_info->stdout);
-+                spin_lock(&f->file_lock);
-+                fdt = files_fdtable(f);
-+                __set_bit(1, fdt->open_fds);
-+                __clear_bit(1, fdt->close_on_exec);
-+                __set_bit(2, fdt->open_fds);
-+                __clear_bit(2, fdt->close_on_exec);
-+                spin_unlock(&f->file_lock);
++		sys_close(1);
++		sys_close(2);
++		get_file(sub_info->stdout);
++		fd_install(1, sub_info->stdout);
++		fd_install(2, sub_info->stdout);
++		spin_lock(&f->file_lock);
++		fdt = files_fdtable(f);
++		__set_bit(1, fdt->open_fds);
++		__clear_bit(1, fdt->close_on_exec);
++		__set_bit(2, fdt->open_fds);
++		__clear_bit(2, fdt->close_on_exec);
++		spin_unlock(&f->file_lock);
 +
-+                /* disallow core files */
-+                current->signal->rlim[RLIMIT_CORE] = (struct rlimit){0, 0};
-+        }
++		/* disallow core files */
++		current->signal->rlim[RLIMIT_CORE] = (struct rlimit){0, 0};
++	}
 +
- 	/* We can run anywhere, unlike our parent keventd(). */
- 	set_cpus_allowed_ptr(current, cpu_all_mask);
- 
-@@ -522,6 +545,20 @@ struct subprocess_info *call_usermodehel
+ 	/*
+ 	 * Our parent (unbound workqueue) runs with elevated scheduling
+ 	 * priority. Avoid propagating that into the userspace child.
+@@ -540,6 +563,20 @@
  }
  EXPORT_SYMBOL(call_usermodehelper_setup);
  
diff --git a/target/linux/uml/patches-4.1/102-pseudo-random-mac.patch b/target/linux/uml/patches-4.4/102-pseudo-random-mac.patch
index fc54f603c0..57598f9964 100644
--- a/target/linux/uml/patches-4.1/102-pseudo-random-mac.patch
+++ b/target/linux/uml/patches-4.4/102-pseudo-random-mac.patch
@@ -11,7 +11,7 @@ Applies to vanilla kernel 3.9.4.
 ===============================================================================
 --- a/arch/um/Kconfig.net
 +++ b/arch/um/Kconfig.net
-@@ -21,6 +21,19 @@ config UML_NET
+@@ -21,6 +21,19 @@
          enable at least one of the following transport options to actually
          make use of UML networking.
  
@@ -47,7 +47,7 @@ Applies to vanilla kernel 3.9.4.
  #define DRIVER_NAME "uml-netdev"
  
  static DEFINE_SPINLOCK(opened_lock);
-@@ -295,11 +302,47 @@ static void uml_net_user_timer_expire(un
+@@ -295,11 +302,47 @@
  #endif
  }
  
@@ -95,7 +95,7 @@ Applies to vanilla kernel 3.9.4.
  
  	if (str == NULL)
  		goto random;
-@@ -340,9 +383,26 @@ static void setup_etheraddr(struct net_d
+@@ -340,9 +383,26 @@
  	return;
  
  random: