Re: [PATCH] - create common header for init/main.c called init functions

From: Arthur Othieno
Date: Tue Oct 18 2005 - 18:23:32 EST

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On Fri, Oct 14, 2005 at 01:42:10AM +0100, Ben Dooks wrote:
> init/main.c calls a number of functions externally
> but declaring them locally. This patch creates a
> new header (linux/kernel_init.h) and moves all
> the declarations into it.

These functions are only referenced in init/main.c, and rightfully so.
In the end, this doesn't change anything much, other than maintainance
overhead for the new include/linux/kernel_init.h

But, comments within..

> Also removes any old init functions now done by
> an initcall()

(mca|sbus|tc)_init() removal look good.

> Signed-off-by: Ben Dooks <ben-linux@xxxxxxxxx>

> diff -urpN -X ../dontdiff linux-2.6.14-rc4-bjd3b/drivers/acpi/bus.c linux-2.6.14-rc4-bjd3c/drivers/acpi/bus.c
> --- linux-2.6.14-rc4-bjd3b/drivers/acpi/bus.c 2005-10-11 10:56:31.000000000 +0100
> +++ linux-2.6.14-rc4-bjd3c/drivers/acpi/bus.c 2005-10-14 01:32:27.000000000 +0100
> @@ -30,6 +30,7 @@
> #include <linux/pm.h>
> #include <linux/device.h>
> #include <linux/proc_fs.h>
> +#include <linux/kernel_init.h>

Unecessary, acpi_early_init() defined here.

> #ifdef CONFIG_X86
> #include <asm/mpspec.h>
> #endif
> diff -urpN -X ../dontdiff linux-2.6.14-rc4-bjd3b/drivers/base/init.c linux-2.6.14-rc4-bjd3c/drivers/base/init.c
> --- linux-2.6.14-rc4-bjd3b/drivers/base/init.c 2005-10-13 15:27:05.000000000 +0100
> +++ linux-2.6.14-rc4-bjd3c/drivers/base/init.c 2005-10-14 01:29:35.000000000 +0100
> @@ -9,6 +9,7 @@
>
> #include <linux/device.h>
> #include <linux/init.h>
> +#include <linux/kernel_init.h>

Ditto driver_init().

> #include "base.h"
>
> diff -urpN -X ../dontdiff linux-2.6.14-rc4-bjd3b/fs/buffer.c linux-2.6.14-rc4-bjd3c/fs/buffer.c
> --- linux-2.6.14-rc4-bjd3b/fs/buffer.c 2005-10-11 10:56:33.000000000 +0100
> +++ linux-2.6.14-rc4-bjd3c/fs/buffer.c 2005-10-14 01:36:06.000000000 +0100
> @@ -19,7 +19,9 @@
> */
>
> #include <linux/config.h>
> +#include <linux/init.h>
> #include <linux/kernel.h>
> +#include <linux/kernel_init.h>

Ditto buffer_init().

> #include <linux/syscalls.h>
> #include <linux/fs.h>
> #include <linux/mm.h>
> diff -urpN -X ../dontdiff linux-2.6.14-rc4-bjd3b/include/linux/kernel_init.h linux-2.6.14-rc4-bjd3c/include/linux/kernel_init.h
> --- linux-2.6.14-rc4-bjd3b/include/linux/kernel_init.h 1970-01-01 01:00:00.000000000 +0100
> +++ linux-2.6.14-rc4-bjd3c/include/linux/kernel_init.h 2005-10-14 01:34:28.000000000 +0100
> @@ -0,0 +1,26 @@

#ifndef _LINUX_KERNEL_INIT_H
#define _LINUX_KERNEL_INIT_H

> +/* include/linux/kernel_init.h
> + *
> + * (C) 2005 Simtec Electronics
> + * Ben Dooks <ben@xxxxxxxxxxxx>

A little too much, no? This is only moving existing stuff around..

> + *
> + * Initialisation function prototypes
> +*/
> +
> +extern void init_IRQ(void);
> +extern void __init fork_init(unsigned long);
> +extern void __init signals_init(void);
> +extern void __init buffer_init(void);
> +extern void __init driver_init(void);
> +extern void __init pidhash_init(void);
> +extern void __init pidmap_init(void);
> +extern void __init prio_tree_init(void);
> +extern void __init populate_rootfs(void);
> +extern void __init prepare_namespace(void);

extern void foo_init(void) __init;

> +
> +extern void free_initmem(void);
> +
> +#ifdef CONFIG_ACPI
> +extern void __init acpi_early_init(void);
> +#else
> +static inline void acpi_early_init(void) { }
> +#endif

#endif /* _LINUX_KERNEL_INIT_H */

> diff -urpN -X ../dontdiff linux-2.6.14-rc4-bjd3b/init/do_mounts.c linux-2.6.14-rc4-bjd3c/init/do_mounts.c
> --- linux-2.6.14-rc4-bjd3b/init/do_mounts.c 2005-10-11 10:56:34.000000000 +0100
> +++ linux-2.6.14-rc4-bjd3c/init/do_mounts.c 2005-10-14 01:31:42.000000000 +0100
> @@ -8,6 +8,7 @@
> #include <linux/security.h>
> #include <linux/delay.h>
> #include <linux/mount.h>
> +#include <linux/kernel_init.h>

Unecessary, prepare_namespace() defined here.

> #include <linux/nfs_fs.h>
> #include <linux/nfs_fs_sb.h>
> diff -urpN -X ../dontdiff linux-2.6.14-rc4-bjd3b/init/initramfs.c linux-2.6.14-rc4-bjd3c/init/initramfs.c
> --- linux-2.6.14-rc4-bjd3b/init/initramfs.c 2005-10-11 23:47:02.000000000 +0100
> +++ linux-2.6.14-rc4-bjd3c/init/initramfs.c 2005-10-14 01:29:01.000000000 +0100
> @@ -6,6 +6,7 @@
> #include <linux/delay.h>
> #include <linux/string.h>
> #include <linux/syscalls.h>
> +#include <linux/kernel_init.h>

Ditto populate_rootfs().

> static __initdata char *message;
> static void __init error(char *x)
> diff -urpN -X ../dontdiff linux-2.6.14-rc4-bjd3b/init/main.c linux-2.6.14-rc4-bjd3c/init/main.c
> --- linux-2.6.14-rc4-bjd3b/init/main.c 2005-10-11 10:56:34.000000000 +0100
> +++ linux-2.6.14-rc4-bjd3c/init/main.c 2005-10-14 01:35:11.000000000 +0100
> @@ -17,6 +17,7 @@
> #include <linux/proc_fs.h>
> #include <linux/devfs_fs_kernel.h>
> #include <linux/kernel.h>
> +#include <linux/kernel_init.h>
> #include <linux/syscalls.h>
> #include <linux/string.h>
> #include <linux/ctype.h>
> @@ -47,8 +48,11 @@
> #include <linux/rmap.h>
> #include <linux/mempolicy.h>
> #include <linux/key.h>
> +#include <linux/sysctl.h>
> #include <net/sock.h>
>
> +#include <linux/radix-tree.h>
> +

No need for the extra whitespace, could have as well gone right below
<linux/sysctl.h>

> #include <asm/io.h>
> #include <asm/bugs.h>
> #include <asm/setup.h>
> @@ -80,30 +84,7 @@
>
> static int init(void *);
>
> -extern void init_IRQ(void);
> -extern void fork_init(unsigned long);
> -extern void mca_init(void);
> -extern void sbus_init(void);
> -extern void sysctl_init(void);
> -extern void signals_init(void);
> -extern void buffer_init(void);
> -extern void pidhash_init(void);
> -extern void pidmap_init(void);
> -extern void prio_tree_init(void);
> -extern void radix_tree_init(void);
> -extern void free_initmem(void);
> -extern void populate_rootfs(void);
> -extern void driver_init(void);
> -extern void prepare_namespace(void);
> -#ifdef CONFIG_ACPI
> -extern void acpi_early_init(void);
> -#else
> -static inline void acpi_early_init(void) { }
> -#endif
>
> -#ifdef CONFIG_TC
> -extern void tc_init(void);
> -#endif
>
> enum system_states system_state;
> EXPORT_SYMBOL(system_state);
> diff -urpN -X ../dontdiff linux-2.6.14-rc4-bjd3b/kernel/fork.c linux-2.6.14-rc4-bjd3c/kernel/fork.c
> --- linux-2.6.14-rc4-bjd3b/kernel/fork.c 2005-10-11 10:56:34.000000000 +0100
> +++ linux-2.6.14-rc4-bjd3c/kernel/fork.c 2005-10-14 01:18:16.000000000 +0100
> @@ -42,6 +42,7 @@
> #include <linux/profile.h>
> #include <linux/rmap.h>
> #include <linux/acct.h>
> +#include <linux/kernel_init.h>

Unecessary, fork_init() defined here.

> #include <asm/pgtable.h>
> #include <asm/pgalloc.h>
> diff -urpN -X ../dontdiff linux-2.6.14-rc4-bjd3b/kernel/pid.c linux-2.6.14-rc4-bjd3c/kernel/pid.c
> --- linux-2.6.14-rc4-bjd3b/kernel/pid.c 2005-06-17 20:48:29.000000000 +0100
> +++ linux-2.6.14-rc4-bjd3c/kernel/pid.c 2005-10-14 01:24:27.000000000 +0100
> @@ -26,6 +26,7 @@
> #include <linux/init.h>
> #include <linux/bootmem.h>
> #include <linux/hash.h>
> +#include <linux/kernel_init.h>

Ditto pid(map|hash)_init().

> #define pid_hashfn(nr) hash_long((unsigned long)nr, pidhash_shift)
> static struct hlist_head *pid_hash[PIDTYPE_MAX];
> diff -urpN -X ../dontdiff linux-2.6.14-rc4-bjd3b/kernel/signal.c linux-2.6.14-rc4-bjd3c/kernel/signal.c
> --- linux-2.6.14-rc4-bjd3b/kernel/signal.c 2005-10-11 10:56:34.000000000 +0100
> +++ linux-2.6.14-rc4-bjd3c/kernel/signal.c 2005-10-14 01:22:16.000000000 +0100
> @@ -25,6 +25,7 @@
> #include <linux/posix-timers.h>
> #include <linux/signal.h>
> #include <linux/audit.h>
> +#include <linux/kernel_init.h>

Ditto signals_init().

> #include <asm/param.h>
> #include <asm/uaccess.h>
> #include <asm/unistd.h>
> diff -urpN -X ../dontdiff linux-2.6.14-rc4-bjd3b/lib/prio_tree.c linux-2.6.14-rc4-bjd3c/lib/prio_tree.c
> --- linux-2.6.14-rc4-bjd3b/lib/prio_tree.c 2005-06-17 20:48:29.000000000 +0100
> +++ linux-2.6.14-rc4-bjd3c/lib/prio_tree.c 2005-10-14 01:27:04.000000000 +0100
> @@ -14,6 +14,7 @@
> #include <linux/init.h>
> #include <linux/mm.h>
> #include <linux/prio_tree.h>
> +#include <linux/kernel_init.h>

Ditto prio_tree_init().

> /*
> * A clever mix of heap and radix trees forms a radix priority search tree (PST)
> diff -urpN -X ../dontdiff linux-2.6.14-rc4-bjd3b/lib/radix-tree.c linux-2.6.14-rc4-bjd3c/lib/radix-tree.c
> --- linux-2.6.14-rc4-bjd3b/lib/radix-tree.c 2005-10-11 10:56:34.000000000 +0100
> +++ linux-2.6.14-rc4-bjd3c/lib/radix-tree.c 2005-10-14 01:27:21.000000000 +0100
> @@ -21,6 +21,7 @@
> #include <linux/errno.h>
> #include <linux/init.h>
> #include <linux/kernel.h>
> +#include <linux/kernel_init.h>

Ditto radix_tree_init(), and already prototyped in include/linux/radix-tree.h:

> #include <linux/module.h>
> #include <linux/radix-tree.h>
> #include <linux/percpu.h>
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Next message: William Lee Irwin III: "Re: [Patch 2/3] Export get_one_pte_map."
Previous message: Ravikiran G Thirumalai: "Re: [discuss] Re: x86_64: 2.6.14-rc4 swiotlb broken"
Next in thread: Adrian Bunk: "Re: [PATCH] - create common header for init/main.c called init functions"
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