diff options
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 13 | ||||
| -rw-r--r-- | init/Makefile | 1 | ||||
| -rw-r--r-- | init/do_mounts.c | 8 | ||||
| -rw-r--r-- | init/do_mounts.h | 16 | ||||
| -rw-r--r-- | init/do_mounts_devfs.c | 137 | ||||
| -rw-r--r-- | init/do_mounts_initrd.c | 6 | ||||
| -rw-r--r-- | init/do_mounts_md.c | 7 | ||||
| -rw-r--r-- | init/do_mounts_rd.c | 4 | ||||
| -rw-r--r-- | init/main.c | 9 |
9 files changed, 28 insertions, 173 deletions
diff --git a/init/Kconfig b/init/Kconfig index f70f2fd273c2..a5b073a103e7 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -54,8 +54,8 @@ config LOCK_KERNEL config INIT_ENV_ARG_LIMIT int - default 32 if !USERMODE - default 128 if USERMODE + default 32 if !UML + default 128 if UML help Maximum of each of the number of arguments and environment variables passed to init from the kernel command line. @@ -379,6 +379,15 @@ config SLAB SLOB is more space efficient but does not scale well and is more susceptible to fragmentation. +config VM_EVENT_COUNTERS + default y + bool "Enable VM event counters for /proc/vmstat" if EMBEDDED + help + VM event counters are only needed to for event counts to be + shown. They have no function for the kernel itself. This + option allows the disabling of the VM event counters. + /proc/vmstat will only show page counts. + endmenu # General setup config TINY_SHMEM diff --git a/init/Makefile b/init/Makefile index a2300078f2b7..633a268d270d 100644 --- a/init/Makefile +++ b/init/Makefile @@ -6,7 +6,6 @@ obj-y := main.o version.o mounts.o initramfs.o obj-$(CONFIG_GENERIC_CALIBRATE_DELAY) += calibrate.o mounts-y := do_mounts.o -mounts-$(CONFIG_DEVFS_FS) += do_mounts_devfs.o mounts-$(CONFIG_BLK_DEV_RAM) += do_mounts_rd.o mounts-$(CONFIG_BLK_DEV_INITRD) += do_mounts_initrd.o mounts-$(CONFIG_BLK_DEV_MD) += do_mounts_md.o diff --git a/init/do_mounts.c b/init/do_mounts.c index 21b3b8f33a72..94aeec7aa917 100644 --- a/init/do_mounts.c +++ b/init/do_mounts.c @@ -325,7 +325,7 @@ static int __init mount_nfs_root(void) { void *data = nfs_root_data(); - create_dev("/dev/root", ROOT_DEV, NULL); + create_dev("/dev/root", ROOT_DEV); if (data && do_mount_root("/dev/root", "nfs", root_mountflags, data) == 0) return 1; @@ -386,7 +386,7 @@ void __init mount_root(void) change_floppy("root floppy"); } #endif - create_dev("/dev/root", ROOT_DEV, root_device_name); + create_dev("/dev/root", ROOT_DEV); mount_block_root("/dev/root", root_mountflags); } @@ -397,8 +397,6 @@ void __init prepare_namespace(void) { int is_floppy; - mount_devfs(); - if (root_delay) { printk(KERN_INFO "Waiting %dsec before mounting root device...\n", root_delay); @@ -428,10 +426,8 @@ void __init prepare_namespace(void) mount_root(); out: - umount_devfs("/dev"); sys_mount(".", "/", NULL, MS_MOVE, NULL); sys_chroot("."); security_sb_post_mountroot(); - mount_devfs_fs (); } diff --git a/init/do_mounts.h b/init/do_mounts.h index e0a7ac9649e1..e7f2e7fa066e 100644 --- a/init/do_mounts.h +++ b/init/do_mounts.h @@ -1,6 +1,5 @@ #include <linux/config.h> #include <linux/kernel.h> -#include <linux/devfs_fs_kernel.h> #include <linux/init.h> #include <linux/syscalls.h> #include <linux/unistd.h> @@ -15,25 +14,12 @@ void mount_root(void); extern int root_mountflags; extern char *root_device_name; -#ifdef CONFIG_DEVFS_FS - -void mount_devfs(void); -void umount_devfs(char *path); -int create_dev(char *name, dev_t dev, char *devfs_name); - -#else - -static inline void mount_devfs(void) {} -static inline void umount_devfs(const char *path) {} - -static inline int create_dev(char *name, dev_t dev, char *devfs_name) +static inline int create_dev(char *name, dev_t dev) { sys_unlink(name); return sys_mknod(name, S_IFBLK|0600, new_encode_dev(dev)); } -#endif - #if BITS_PER_LONG == 32 static inline u32 bstat(char *name) { diff --git a/init/do_mounts_devfs.c b/init/do_mounts_devfs.c deleted file mode 100644 index cc526474690a..000000000000 --- a/init/do_mounts_devfs.c +++ /dev/null @@ -1,137 +0,0 @@ - -#include <linux/kernel.h> -#include <linux/dirent.h> -#include <linux/string.h> - -#include "do_mounts.h" - -void __init mount_devfs(void) -{ - sys_mount("devfs", "/dev", "devfs", 0, NULL); -} - -void __init umount_devfs(char *path) -{ - sys_umount(path, 0); -} - -/* - * If the dir will fit in *buf, return its length. If it won't fit, return - * zero. Return -ve on error. - */ -static int __init do_read_dir(int fd, void *buf, int len) -{ - long bytes, n; - char *p = buf; - sys_lseek(fd, 0, 0); - - for (bytes = 0; bytes < len; bytes += n) { - n = sys_getdents64(fd, (struct linux_dirent64 *)(p + bytes), - len - bytes); - if (n < 0) - return n; - if (n == 0) - return bytes; - } - return 0; -} - -/* - * Try to read all of a directory. Returns the contents at *p, which - * is kmalloced memory. Returns the number of bytes read at *len. Returns - * NULL on error. - */ -static void * __init read_dir(char *path, int *len) -{ - int size; - int fd = sys_open(path, 0, 0); - - *len = 0; - if (fd < 0) - return NULL; - - for (size = 1 << 9; size <= (PAGE_SIZE << MAX_ORDER); size <<= 1) { - void *p = kmalloc(size, GFP_KERNEL); - int n; - if (!p) - break; - n = do_read_dir(fd, p, size); - if (n > 0) { - sys_close(fd); - *len = n; - return p; - } - kfree(p); - if (n == -EINVAL) - continue; /* Try a larger buffer */ - if (n < 0) - break; - } - sys_close(fd); - return NULL; -} - -/* - * recursively scan <path>, looking for a device node of type <dev> - */ -static int __init find_in_devfs(char *path, unsigned dev) -{ - char *end = path + strlen(path); - int rest = path + 64 - end; - int size; - char *p = read_dir(path, &size); - char *s; - - if (!p) - return -1; - for (s = p; s < p + size; s += ((struct linux_dirent64 *)s)->d_reclen) { - struct linux_dirent64 *d = (struct linux_dirent64 *)s; - if (strlen(d->d_name) + 2 > rest) - continue; - switch (d->d_type) { - case DT_BLK: - sprintf(end, "/%s", d->d_name); - if (bstat(path) != dev) - break; - kfree(p); - return 0; - case DT_DIR: - if (strcmp(d->d_name, ".") == 0) - break; - if (strcmp(d->d_name, "..") == 0) - break; - sprintf(end, "/%s", d->d_name); - if (find_in_devfs(path, dev) < 0) - break; - kfree(p); - return 0; - } - } - kfree(p); - return -1; -} - -/* - * create a device node called <name> which points to - * <devfs_name> if possible, otherwise find a device node - * which matches <dev> and make <name> a symlink pointing to it. - */ -int __init create_dev(char *name, dev_t dev, char *devfs_name) -{ - char path[64]; - - sys_unlink(name); - if (devfs_name && devfs_name[0]) { - if (strncmp(devfs_name, "/dev/", 5) == 0) - devfs_name += 5; - sprintf(path, "/dev/%s", devfs_name); - if (sys_access(path, 0) == 0) - return sys_symlink(devfs_name, name); - } - if (!dev) - return -1; - strcpy(path, "/dev"); - if (find_in_devfs(path, new_encode_dev(dev)) < 0) - return -1; - return sys_symlink(path + 5, name); -} diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c index 405f9031af87..a06f037fa000 100644 --- a/init/do_mounts_initrd.c +++ b/init/do_mounts_initrd.c @@ -44,7 +44,7 @@ static void __init handle_initrd(void) int pid; real_root_dev = new_encode_dev(ROOT_DEV); - create_dev("/dev/root.old", Root_RAM0, NULL); + create_dev("/dev/root.old", Root_RAM0); /* mount initrd on rootfs' /root */ mount_block_root("/dev/root.old", root_mountflags & ~MS_RDONLY); sys_mkdir("/old", 0700); @@ -54,7 +54,6 @@ static void __init handle_initrd(void) sys_chdir("/root"); sys_mount(".", "/", NULL, MS_MOVE, NULL); sys_chroot("."); - mount_devfs_fs (); current->flags |= PF_NOFREEZE; pid = kernel_thread(do_linuxrc, "/linuxrc", SIGCHLD); @@ -71,7 +70,6 @@ static void __init handle_initrd(void) sys_chroot("."); sys_close(old_fd); sys_close(root_fd); - umount_devfs("/old/dev"); if (new_decode_dev(real_root_dev) == Root_RAM0) { sys_chdir("/old"); @@ -107,7 +105,7 @@ static void __init handle_initrd(void) int __init initrd_load(void) { if (mount_initrd) { - create_dev("/dev/ram", Root_RAM0, NULL); + create_dev("/dev/ram", Root_RAM0); /* * Load the initrd data into /dev/ram0. Execute it as initrd * unless /dev/ram0 is supposed to be our actual root device, diff --git a/init/do_mounts_md.c b/init/do_mounts_md.c index f6f36806f84a..2429e1bf8c60 100644 --- a/init/do_mounts_md.c +++ b/init/do_mounts_md.c @@ -125,19 +125,18 @@ static void __init md_setup_drive(void) int err = 0; char *devname; mdu_disk_info_t dinfo; - char name[16], devfs_name[16]; + char name[16]; minor = md_setup_args[ent].minor; partitioned = md_setup_args[ent].partitioned; devname = md_setup_args[ent].device_names; sprintf(name, "/dev/md%s%d", partitioned?"_d":"", minor); - sprintf(devfs_name, "/dev/md/%s%d", partitioned?"d":"", minor); if (partitioned) dev = MKDEV(mdp_major, minor << MdpMinorShift); else dev = MKDEV(MD_MAJOR, minor); - create_dev(name, dev, devfs_name); + create_dev(name, dev); for (i = 0; i < MD_SB_DISKS && devname != 0; i++) { char *p; char comp_name[64]; @@ -272,7 +271,7 @@ __setup("md=", md_setup); void __init md_run_setup(void) { - create_dev("/dev/md0", MKDEV(MD_MAJOR, 0), "md/0"); + create_dev("/dev/md0", MKDEV(MD_MAJOR, 0)); if (raid_noautodetect) printk(KERN_INFO "md: Skipping autodetection of RAID arrays. (raid=noautodetect)\n"); else { diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c index c2683fcd792d..ed652f40f075 100644 --- a/init/do_mounts_rd.c +++ b/init/do_mounts_rd.c @@ -262,8 +262,8 @@ int __init rd_load_disk(int n) { if (rd_prompt) change_floppy("root floppy disk to be loaded into RAM disk"); - create_dev("/dev/root", ROOT_DEV, root_device_name); - create_dev("/dev/ram", MKDEV(RAMDISK_MAJOR, n), NULL); + create_dev("/dev/root", ROOT_DEV); + create_dev("/dev/ram", MKDEV(RAMDISK_MAJOR, n)); return rd_load_image("/dev/root"); } diff --git a/init/main.c b/init/main.c index 0d57f6ccb63a..b2f3b566790e 100644 --- a/init/main.c +++ b/init/main.c @@ -11,11 +11,9 @@ #define __KERNEL_SYSCALLS__ -#include <linux/config.h> #include <linux/types.h> #include <linux/module.h> #include <linux/proc_fs.h> -#include <linux/devfs_fs_kernel.h> #include <linux/kernel.h> #include <linux/syscalls.h> #include <linux/string.h> @@ -447,10 +445,17 @@ static void __init boot_cpu_init(void) cpu_set(cpu, cpu_possible_map); } +void __init __attribute__((weak)) smp_setup_processor_id(void) +{ +} + asmlinkage void __init start_kernel(void) { char * command_line; extern struct kernel_param __start___param[], __stop___param[]; + + smp_setup_processor_id(); + /* * Interrupts are still disabled. Do necessary setups, then * enable them |