diff options
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 57 | ||||
| -rw-r--r-- | init/do_mounts.c | 8 | ||||
| -rw-r--r-- | init/do_mounts_initrd.c | 1 | ||||
| -rw-r--r-- | init/initramfs.c | 44 | ||||
| -rw-r--r-- | init/main.c | 70 |
5 files changed, 87 insertions, 93 deletions
diff --git a/init/Kconfig b/init/Kconfig index 38416a199de..3b36a1d5365 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -214,6 +214,17 @@ config CPUSETS Say N if unsure. +config RELAY + bool "Kernel->user space relay support (formerly relayfs)" + help + This option enables support for relay interface support in + certain file systems (such as debugfs). + It is designed to provide an efficient mechanism for tools and + facilities to relay large amounts of data from kernel space to + user space. + + If unsure, say N. + source "usr/Kconfig" config UID16 @@ -354,43 +365,6 @@ config SHMEM option replaces shmem and tmpfs with the much simpler ramfs code, which may be appropriate on small systems without swap. -config CC_ALIGN_FUNCTIONS - int "Function alignment" if EMBEDDED - default 0 - help - Align the start of functions to the next power-of-two greater than n, - skipping up to n bytes. For instance, 32 aligns functions - to the next 32-byte boundary, but 24 would align to the next - 32-byte boundary only if this can be done by skipping 23 bytes or less. - Zero means use compiler's default. - -config CC_ALIGN_LABELS - int "Label alignment" if EMBEDDED - default 0 - help - Align all branch targets to a power-of-two boundary, skipping - up to n bytes like ALIGN_FUNCTIONS. This option can easily - make code slower, because it must insert dummy operations for - when the branch target is reached in the usual flow of the code. - Zero means use compiler's default. - -config CC_ALIGN_LOOPS - int "Loop alignment" if EMBEDDED - default 0 - help - Align loops to a power-of-two boundary, skipping up to n bytes. - Zero means use compiler's default. - -config CC_ALIGN_JUMPS - int "Jump alignment" if EMBEDDED - default 0 - help - Align branch targets to a power-of-two boundary, for branch - targets where the targets can only be reached by jumping, - skipping up to n bytes like ALIGN_FUNCTIONS. In this case, - no dummy operations need be executed. - Zero means use compiler's default. - config SLAB default y bool "Use full SLAB allocator" if EMBEDDED @@ -459,15 +433,6 @@ config MODULE_FORCE_UNLOAD rmmod). This is mainly for kernel developers and desperate users. If unsure, say N. -config OBSOLETE_MODPARM - bool - default y - depends on MODULES - help - You need this option to use module parameters on modules which - have not been converted to the new module parameter system yet. - If unsure, say Y. - config MODVERSIONS bool "Module versioning support" depends on MODULES diff --git a/init/do_mounts.c b/init/do_mounts.c index b27c1106440..f4b7b9d278c 100644 --- a/init/do_mounts.c +++ b/init/do_mounts.c @@ -19,11 +19,10 @@ extern int get_filesystem_list(char * buf); int __initdata rd_doload; /* 1 = load RAM disk, 0 = don't load */ -int root_mountflags = MS_RDONLY | MS_VERBOSE; +int root_mountflags = MS_RDONLY | MS_SILENT; char * __initdata root_device_name; static char __initdata saved_root_name[64]; -/* this is initialized in init/main.c */ dev_t ROOT_DEV; static int __init load_ramdisk(char *str) @@ -311,6 +310,11 @@ retry: panic("VFS: Unable to mount root fs on %s", b); } + + printk("No filesystem could mount root, tried: "); + for (p = fs_names; *p; p += strlen(p)+1) + printk(" %s", p); + printk("\n"); panic("VFS: Unable to mount root fs on %s", __bdevname(ROOT_DEV, b)); out: putname(fs_names); diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c index a05cabd0fd1..405f9031af8 100644 --- a/init/do_mounts_initrd.c +++ b/init/do_mounts_initrd.c @@ -56,6 +56,7 @@ static void __init handle_initrd(void) sys_chroot("."); mount_devfs_fs (); + current->flags |= PF_NOFREEZE; pid = kernel_thread(do_linuxrc, "/linuxrc", SIGCHLD); if (pid > 0) { while (pid != sys_wait4(-1, NULL, 0, NULL)) diff --git a/init/initramfs.c b/init/initramfs.c index 0c5d9a3f951..f81cfa40a71 100644 --- a/init/initramfs.c +++ b/init/initramfs.c @@ -26,10 +26,12 @@ static void __init free(void *where) /* link hash */ +#define N_ALIGN(len) ((((len) + 1) & ~3) + 2) + static __initdata struct hash { int ino, minor, major; struct hash *next; - char *name; + char name[N_ALIGN(PATH_MAX)]; } *head[32]; static inline int hash(int major, int minor, int ino) @@ -57,7 +59,7 @@ static char __init *find_link(int major, int minor, int ino, char *name) q->ino = ino; q->minor = minor; q->major = major; - q->name = name; + strcpy(q->name, name); q->next = NULL; *p = q; return NULL; @@ -133,8 +135,6 @@ static inline void eat(unsigned n) count -= n; } -#define N_ALIGN(len) ((((len) + 1) & ~3) + 2) - static __initdata char *collected; static __initdata int remains; static __initdata char *collect; @@ -466,10 +466,32 @@ static char * __init unpack_to_rootfs(char *buf, unsigned len, int check_only) extern char __initramfs_start[], __initramfs_end[]; #ifdef CONFIG_BLK_DEV_INITRD #include <linux/initrd.h> +#include <linux/kexec.h> static void __init free_initrd(void) { - free_initrd_mem(initrd_start, initrd_end); +#ifdef CONFIG_KEXEC + unsigned long crashk_start = (unsigned long)__va(crashk_res.start); + unsigned long crashk_end = (unsigned long)__va(crashk_res.end); + + /* + * If the initrd region is overlapped with crashkernel reserved region, + * free only memory that is not part of crashkernel region. + */ + if (initrd_start < crashk_end && initrd_end > crashk_start) { + /* + * Initialize initrd memory region since the kexec boot does + * not do. + */ + memset((void *)initrd_start, 0, initrd_end - initrd_start); + if (initrd_start < crashk_start) + free_initrd_mem(initrd_start, crashk_start); + if (initrd_end > crashk_end) + free_initrd_mem(crashk_end, initrd_end); + } else +#endif + free_initrd_mem(initrd_start, initrd_end); + initrd_start = 0; initrd_end = 0; } @@ -484,6 +506,7 @@ void __init populate_rootfs(void) panic(err); #ifdef CONFIG_BLK_DEV_INITRD if (initrd_start) { +#ifdef CONFIG_BLK_DEV_RAM int fd; printk(KERN_INFO "checking if image is initramfs..."); err = unpack_to_rootfs((char *)initrd_start, @@ -496,13 +519,22 @@ void __init populate_rootfs(void) return; } printk("it isn't (%s); looks like an initrd\n", err); - fd = sys_open("/initrd.image", O_WRONLY|O_CREAT, 700); + fd = sys_open("/initrd.image", O_WRONLY|O_CREAT, 0700); if (fd >= 0) { sys_write(fd, (char *)initrd_start, initrd_end - initrd_start); sys_close(fd); free_initrd(); } +#else + printk(KERN_INFO "Unpacking initramfs..."); + err = unpack_to_rootfs((char *)initrd_start, + initrd_end - initrd_start, 0); + if (err) + panic(err); + printk(" done\n"); + free_initrd(); +#endif } #endif } diff --git a/init/main.c b/init/main.c index 7c79da57d3a..f715b9b8975 100644 --- a/init/main.c +++ b/init/main.c @@ -306,8 +306,6 @@ static int __init rdinit_setup(char *str) } __setup("rdinit=", rdinit_setup); -extern void setup_arch(char **); - #ifndef CONFIG_SMP #ifdef CONFIG_X86_LOCAL_APIC @@ -325,7 +323,7 @@ static inline void smp_prepare_cpus(unsigned int maxcpus) { } #else #ifdef __GENERIC_PER_CPU -unsigned long __per_cpu_offset[NR_CPUS]; +unsigned long __per_cpu_offset[NR_CPUS] __read_mostly; EXPORT_SYMBOL(__per_cpu_offset); @@ -333,6 +331,7 @@ static void __init setup_per_cpu_areas(void) { unsigned long size, i; char *ptr; + unsigned long nr_possible_cpus = num_possible_cpus(); /* Copy section for each CPU (we discard the original) */ size = ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES); @@ -340,12 +339,12 @@ static void __init setup_per_cpu_areas(void) if (size < PERCPU_ENOUGH_ROOM) size = PERCPU_ENOUGH_ROOM; #endif + ptr = alloc_bootmem(size * nr_possible_cpus); - ptr = alloc_bootmem(size * NR_CPUS); - - for (i = 0; i < NR_CPUS; i++, ptr += size) { + for_each_possible_cpu(i) { __per_cpu_offset[i] = ptr - __per_cpu_start; memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start); + ptr += size; } } #endif /* !__GENERIC_PER_CPU */ @@ -438,6 +437,15 @@ void __init parse_early_param(void) * Activate the first processor. */ +static void __init boot_cpu_init(void) +{ + int cpu = smp_processor_id(); + /* Mark the boot cpu "present", "online" etc for SMP and UP case */ + cpu_set(cpu, cpu_online_map); + cpu_set(cpu, cpu_present_map); + cpu_set(cpu, cpu_possible_map); +} + asmlinkage void __init start_kernel(void) { char * command_line; @@ -447,17 +455,13 @@ asmlinkage void __init start_kernel(void) * enable them */ lock_kernel(); + boot_cpu_init(); page_address_init(); printk(KERN_NOTICE); printk(linux_banner); setup_arch(&command_line); setup_per_cpu_areas(); - - /* - * Mark the boot cpu "online" so that it can call console drivers in - * printk() and can access its per-cpu storage. - */ - smp_prepare_boot_cpu(); + smp_prepare_boot_cpu(); /* arch-specific boot-cpu hooks */ /* * Set up the scheduler prior starting any interrupts (such as the @@ -565,17 +569,23 @@ static void __init do_initcalls(void) int count = preempt_count(); for (call = __initcall_start; call < __initcall_end; call++) { - char *msg; + char *msg = NULL; + char msgbuf[40]; + int result; if (initcall_debug) { - printk(KERN_DEBUG "Calling initcall 0x%p", *call); - print_fn_descriptor_symbol(": %s()", (unsigned long) *call); + printk("Calling initcall 0x%p", *call); + print_fn_descriptor_symbol(": %s()", + (unsigned long) *call); printk("\n"); } - (*call)(); + result = (*call)(); - msg = NULL; + if (result && result != -ENODEV && initcall_debug) { + sprintf(msgbuf, "error code %d", result); + msg = msgbuf; + } if (preempt_count() != count) { msg = "preemption imbalance"; preempt_count() = count; @@ -585,8 +595,10 @@ static void __init do_initcalls(void) local_irq_enable(); } if (msg) { - printk(KERN_WARNING "error in initcall at 0x%p: " - "returned with %s\n", *call, msg); + printk(KERN_WARNING "initcall at 0x%p", *call); + print_fn_descriptor_symbol(": %s()", + (unsigned long) *call); + printk(": returned with %s\n", msg); } } @@ -633,24 +645,6 @@ static void run_init_process(char *init_filename) execve(init_filename, argv_init, envp_init); } -static inline void fixup_cpu_present_map(void) -{ -#ifdef CONFIG_SMP - int i; - - /* - * If arch is not hotplug ready and did not populate - * cpu_present_map, just make cpu_present_map same as cpu_possible_map - * for other cpu bringup code to function as normal. e.g smp_init() etc. - */ - if (cpus_empty(cpu_present_map)) { - for_each_cpu(i) { - cpu_set(i, cpu_present_map); - } - } -#endif -} - static int init(void * unused) { lock_kernel(); @@ -668,12 +662,10 @@ static int init(void * unused) */ child_reaper = current; - /* Sets up cpus_possible() */ smp_prepare_cpus(max_cpus); do_pre_smp_initcalls(); - fixup_cpu_present_map(); smp_init(); sched_init_smp(); |