diff options
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 109 | ||||
| -rw-r--r-- | init/do_mounts_md.c | 22 | ||||
| -rw-r--r-- | init/do_mounts_rd.c | 4 | ||||
| -rw-r--r-- | init/main.c | 34 |
4 files changed, 91 insertions, 78 deletions
diff --git a/init/Kconfig b/init/Kconfig index ea097e0..b9923b1 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -99,13 +99,12 @@ config SWAP default y help This option allows you to choose whether you want to have support - for socalled swap devices or swap files in your kernel that are + for so called swap devices or swap files in your kernel that are used to provide more virtual memory than the actual RAM present in your computer. If unsure say Y. config SYSVIPC bool "System V IPC" - depends on MMU ---help--- Inter Process Communication is a suite of library functions and system calls which let processes (running programs) synchronize and @@ -190,40 +189,13 @@ config AUDIT config AUDITSYSCALL bool "Enable system-call auditing support" - depends on AUDIT && (X86 || PPC || PPC64 || ARCH_S390 || IA64 || UML || SPARC64) + depends on AUDIT && (X86 || PPC || PPC64 || S390 || IA64 || UML || SPARC64) default y if SECURITY_SELINUX help Enable low-overhead system-call auditing infrastructure that can be used independently or with another kernel subsystem, such as SELinux. -config HOTPLUG - bool "Support for hot-pluggable devices" if !ARCH_S390 - default ARCH_S390 - help - This option is provided for the case where no in-kernel-tree - modules require HOTPLUG functionality, but a module built - outside the kernel tree does. Such modules require Y here. - -config KOBJECT_UEVENT - bool "Kernel Userspace Events" - depends on NET - default y - help - This option enables the kernel userspace event layer, which is a - simple mechanism for kernel-to-user communication over a netlink - socket. - The goal of the kernel userspace events layer is to provide a simple - and efficient events system, that notifies userspace about kobject - state changes. This will enable applications to just listen for - events instead of polling system devices and files. - Hotplug events (kobject addition and removal) are also available on - the netlink socket in addition to the execution of /sbin/hotplug if - CONFIG_HOTPLUG is enabled. - - Say Y, unless you are building a system requiring minimal memory - consumption. - config IKCONFIG bool "Kernel .config support" ---help--- @@ -256,6 +228,36 @@ config CPUSETS source "usr/Kconfig" +config UID16 + bool "Enable 16-bit UID system calls" if EMBEDDED + depends on ARM || CRIS || FRV || H8300 || X86_32 || M68K || (S390 && !64BIT) || SUPERH || SPARC32 || (SPARC64 && SPARC32_COMPAT) || UML || (X86_64 && IA32_EMULATION) + default y + help + This enables the legacy 16-bit UID syscall wrappers. + +config VM86 + depends X86 + default y + bool "Enable VM86 support" if EMBEDDED + help + This option is required by programs like DOSEMU to run 16-bit legacy + code on X86 processors. It also may be needed by software like + XFree86 to initialize some video cards via BIOS. Disabling this + option saves about 6k. + +config CC_OPTIMIZE_FOR_SIZE + bool "Optimize for size (Look out for broken compilers!)" + default y + depends on ARM || H8300 || EXPERIMENTAL + help + Enabling this option will pass "-Os" instead of "-O2" to gcc + resulting in a smaller kernel. + + WARNING: some versions of gcc may generate incorrect code with this + option. If problems are observed, a gcc upgrade may be needed. + + If unsure, say N. + menuconfig EMBEDDED bool "Configure standard kernel features (for small systems)" help @@ -295,6 +297,15 @@ config KALLSYMS_EXTRA_PASS you wait for kallsyms to be fixed. +config HOTPLUG + bool "Support for hot-pluggable devices" if EMBEDDED + default y + help + This option is provided for the case where no hotplug or uevent + capabilities is wanted by the kernel. You should only consider + disabling this option for embedded systems that do not use modules, a + dynamic /dev tree, or dynamic device discovery. Just say Y. + config PRINTK default y bool "Enable support for printk" if EMBEDDED @@ -315,6 +326,12 @@ config BUG option for embedded systems with no facilities for reporting errors. Just say Y. +config ELF_CORE + default y + bool "Enable ELF core dumps" if EMBEDDED + help + Enable support for generating core dumps. Disabling saves about 4k. + config BASE_FULL default y bool "Enable full-sized data structures for core" if EMBEDDED @@ -338,18 +355,6 @@ config EPOLL Disabling this option will cause the kernel to be built without support for epoll family of system calls. -config CC_OPTIMIZE_FOR_SIZE - bool "Optimize for size" if EMBEDDED - default y if ARM || H8300 - help - Enabling this option will pass "-Os" instead of "-O2" to gcc - resulting in a smaller kernel. - - WARNING: some versions of gcc may generate incorrect code with this - option. If problems are observed, a gcc upgrade may be needed. - - If unsure, say N. - config SHMEM bool "Use full shmem filesystem" if EMBEDDED default y @@ -398,6 +403,15 @@ config CC_ALIGN_JUMPS no dummy operations need be executed. Zero means use compiler's default. +config SLAB + default y + bool "Use full SLAB allocator" if EMBEDDED + help + Disabling this replaces the advanced SLAB allocator and + kmalloc support with the drastically simpler SLOB allocator. + SLOB is more space efficient but does not scale well and is + more susceptible to fragmentation. + endmenu # General setup config TINY_SHMEM @@ -409,6 +423,13 @@ config BASE_SMALL default 0 if BASE_FULL default 1 if !BASE_FULL +config SLOB + default !SLAB + bool + +config OBSOLETE_INTERMODULE + tristate + menu "Loadable module support" config MODULES @@ -460,8 +481,8 @@ config OBSOLETE_MODPARM If unsure, say Y. config MODVERSIONS - bool "Module versioning support (EXPERIMENTAL)" - depends on MODULES && EXPERIMENTAL + bool "Module versioning support" + depends on MODULES help Usually, you have to use modules compiled with your kernel. Saying Y here makes it sometimes possible to use modules diff --git a/init/do_mounts_md.c b/init/do_mounts_md.c index 3fbc355..f6f3680 100644 --- a/init/do_mounts_md.c +++ b/init/do_mounts_md.c @@ -17,7 +17,7 @@ static int __initdata raid_noautodetect, raid_autopart; static struct { int minor; int partitioned; - int pers; + int level; int chunk; char *device_names; } md_setup_args[MAX_MD_DEVS] __initdata; @@ -47,7 +47,7 @@ extern int mdp_major; */ static int __init md_setup(char *str) { - int minor, level, factor, fault, pers, partitioned = 0; + int minor, level, factor, fault, partitioned = 0; char *pername = ""; char *str1; int ent; @@ -78,7 +78,7 @@ static int __init md_setup(char *str) } if (ent >= md_setup_ents) md_setup_ents++; - switch (get_option(&str, &level)) { /* RAID Personality */ + switch (get_option(&str, &level)) { /* RAID level */ case 2: /* could be 0 or -1.. */ if (level == 0 || level == LEVEL_LINEAR) { if (get_option(&str, &factor) != 2 || /* Chunk Size */ @@ -86,16 +86,12 @@ static int __init md_setup(char *str) printk(KERN_WARNING "md: Too few arguments supplied to md=.\n"); return 0; } - md_setup_args[ent].pers = level; + md_setup_args[ent].level = level; md_setup_args[ent].chunk = 1 << (factor+12); - if (level == LEVEL_LINEAR) { - pers = LINEAR; + if (level == LEVEL_LINEAR) pername = "linear"; - } else { - pers = RAID0; + else pername = "raid0"; - } - md_setup_args[ent].pers = pers; break; } /* FALL THROUGH */ @@ -103,7 +99,7 @@ static int __init md_setup(char *str) str = str1; /* FALL THROUGH */ case 0: - md_setup_args[ent].pers = 0; + md_setup_args[ent].level = LEVEL_NONE; pername="super-block"; } @@ -190,10 +186,10 @@ static void __init md_setup_drive(void) continue; } - if (md_setup_args[ent].pers) { + if (md_setup_args[ent].level != LEVEL_NONE) { /* non-persistent */ mdu_array_info_t ainfo; - ainfo.level = pers_to_level(md_setup_args[ent].pers); + ainfo.level = md_setup_args[ent].level; ainfo.size = 0; ainfo.nr_disks =0; ainfo.raid_disks =0; diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c index c10b08a..c2683fc 100644 --- a/init/do_mounts_rd.c +++ b/init/do_mounts_rd.c @@ -145,7 +145,7 @@ int __init rd_load_image(char *from) int nblocks, i, disk; char *buf = NULL; unsigned short rotate = 0; -#if !defined(CONFIG_ARCH_S390) && !defined(CONFIG_PPC_ISERIES) +#if !defined(CONFIG_S390) && !defined(CONFIG_PPC_ISERIES) char rotator[4] = { '|' , '/' , '-' , '\\' }; #endif @@ -237,7 +237,7 @@ int __init rd_load_image(char *from) } sys_read(in_fd, buf, BLOCK_SIZE); sys_write(out_fd, buf, BLOCK_SIZE); -#if !defined(CONFIG_ARCH_S390) && !defined(CONFIG_PPC_ISERIES) +#if !defined(CONFIG_S390) && !defined(CONFIG_PPC_ISERIES) if (!(i % 16)) { printk("%c\b", rotator[rotate & 0x3]); rotate++; diff --git a/init/main.c b/init/main.c index 27f97f9..7c79da5 100644 --- a/init/main.c +++ b/init/main.c @@ -47,34 +47,27 @@ #include <linux/rmap.h> #include <linux/mempolicy.h> #include <linux/key.h> -#include <net/sock.h> #include <asm/io.h> #include <asm/bugs.h> #include <asm/setup.h> #include <asm/sections.h> - -/* - * This is one of the first .c files built. Error out early - * if we have compiler trouble.. - */ -#if __GNUC__ == 2 && __GNUC_MINOR__ == 96 -#ifdef CONFIG_FRAME_POINTER -#error This compiler cannot compile correctly with frame pointers enabled -#endif -#endif +#include <asm/cacheflush.h> #ifdef CONFIG_X86_LOCAL_APIC #include <asm/smp.h> #endif /* - * Versions of gcc older than that listed below may actually compile - * and link okay, but the end product can have subtle run time bugs. - * To avoid associated bogus bug reports, we flatly refuse to compile - * with a gcc that is known to be too old from the very beginning. + * This is one of the first .c files built. Error out early if we have compiler + * trouble. + * + * Versions of gcc older than that listed below may actually compile and link + * okay, but the end product can have subtle run time bugs. To avoid associated + * bogus bug reports, we flatly refuse to compile with a gcc that is known to be + * too old from the very beginning. */ -#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 95) +#if (__GNUC__ < 3) || (__GNUC__ == 3 && __GNUC_MINOR__ < 2) #error Sorry, your GCC is too old. It builds incorrect kernels. #endif @@ -100,6 +93,9 @@ extern void acpi_early_init(void); #else static inline void acpi_early_init(void) { } #endif +#ifndef CONFIG_DEBUG_RODATA +static inline void mark_rodata_ro(void) { } +#endif #ifdef CONFIG_TC extern void tc_init(void); @@ -487,6 +483,7 @@ asmlinkage void __init start_kernel(void) init_IRQ(); pidhash_init(); init_timers(); + hrtimers_init(); softirq_init(); time_init(); @@ -509,6 +506,7 @@ asmlinkage void __init start_kernel(void) } #endif vfs_caches_init_early(); + cpuset_init_early(); mem_init(); kmem_cache_init(); setup_per_cpu_pageset(); @@ -614,9 +612,6 @@ static void __init do_basic_setup(void) sysctl_init(); #endif - /* Networking initialization needs a process context */ - sock_init(); - do_initcalls(); } @@ -712,6 +707,7 @@ static int init(void * unused) */ free_initmem(); unlock_kernel(); + mark_rodata_ro(); system_state = SYSTEM_RUNNING; numa_default_policy(); |