diff options
Diffstat (limited to 'arch/um/kernel/um_arch.c')
| -rw-r--r-- | arch/um/kernel/um_arch.c | 74 |
1 files changed, 31 insertions, 43 deletions
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c index 5f3e13c365e..1993e5e1225 100644 --- a/arch/um/kernel/um_arch.c +++ b/arch/um/kernel/um_arch.c @@ -1,39 +1,22 @@ /* - * Copyright (C) 2000, 2002 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) * Licensed under the GPL */ -#include "linux/kernel.h" -#include "linux/sched.h" -#include "linux/notifier.h" -#include "linux/mm.h" -#include "linux/types.h" -#include "linux/tty.h" -#include "linux/init.h" -#include "linux/bootmem.h" -#include "linux/spinlock.h" -#include "linux/utsname.h" -#include "linux/sysrq.h" -#include "linux/seq_file.h" #include "linux/delay.h" +#include "linux/mm.h" #include "linux/module.h" +#include "linux/seq_file.h" +#include "linux/string.h" #include "linux/utsname.h" -#include "asm/page.h" #include "asm/pgtable.h" -#include "asm/ptrace.h" -#include "asm/elf.h" -#include "asm/user.h" +#include "asm/processor.h" #include "asm/setup.h" -#include "ubd_user.h" -#include "asm/current.h" -#include "kern_util.h" -#include "as-layout.h" #include "arch.h" +#include "as-layout.h" +#include "init.h" #include "kern.h" #include "mem_user.h" -#include "mem.h" -#include "initrd.h" -#include "init.h" #include "os.h" #include "skas.h" @@ -48,7 +31,7 @@ static void __init add_arg(char *arg) printf("add_arg: Too many command line arguments!\n"); exit(1); } - if(strlen(command_line) > 0) + if (strlen(command_line) > 0) strcat(command_line, " "); strcat(command_line, arg); } @@ -133,7 +116,7 @@ static int have_root __initdata = 0; /* Set in uml_mem_setup and modified in linux_main */ long long physmem_size = 32 * 1024 * 1024; -static char *usage_string = +static char *usage_string = "User Mode Linux v%s\n" " available at http://user-mode-linux.sourceforge.net/\n\n"; @@ -191,7 +174,7 @@ static int __init uml_ncpus_setup(char *line, int *add) __uml_setup("ncpus=", uml_ncpus_setup, "ncpus=<# of desired CPUs>\n" -" This tells an SMP kernel how many virtual processors to start.\n\n" +" This tells an SMP kernel how many virtual processors to start.\n\n" ); #endif @@ -223,9 +206,8 @@ static int __init uml_checksetup(char *line, int *add) int n; n = strlen(p->str); - if(!strncmp(line, p->str, n)){ - if (p->setup_func(line + n, add)) return 1; - } + if (!strncmp(line, p->str, n) && p->setup_func(line + n, add)) + return 1; p++; } return 0; @@ -236,7 +218,7 @@ static void __init uml_postsetup(void) initcall_t *p; p = &__uml_postsetup_start; - while(p < &__uml_postsetup_end){ + while(p < &__uml_postsetup_end) { (*p)(); p++; } @@ -272,16 +254,18 @@ int __init linux_main(int argc, char **argv) unsigned int i, add; char * mode; - for (i = 1; i < argc; i++){ - if((i == 1) && (argv[i][0] == ' ')) continue; + for (i = 1; i < argc; i++) { + if ((i == 1) && (argv[i][0] == ' ')) + continue; add = 1; uml_checksetup(argv[i], &add); if (add) add_arg(argv[i]); } - if(have_root == 0) + if (have_root == 0) add_arg(DEFAULT_COMMAND_LINE); + /* OS sanity checks that need to happen before the kernel runs */ os_early_checks(); can_do_skas(); @@ -302,12 +286,14 @@ int __init linux_main(int argc, char **argv) brk_start = (unsigned long) sbrk(0); - /* Increase physical memory size for exec-shield users - so they actually get what they asked for. This should - add zero for non-exec shield users */ + /* + * Increase physical memory size for exec-shield users + * so they actually get what they asked for. This should + * add zero for non-exec shield users + */ diff = UML_ROUND_UP(brk_start) - UML_ROUND_UP(&_end); - if(diff > 1024 * 1024){ + if (diff > 1024 * 1024) { printf("Adding %ld bytes to physical memory to account for " "exec-shield gap\n", diff); physmem_size += UML_ROUND_UP(brk_start) - UML_ROUND_UP(&_end); @@ -324,11 +310,12 @@ int __init linux_main(int argc, char **argv) iomem_size = (iomem_size + PAGE_SIZE - 1) & PAGE_MASK; max_physmem = get_kmem_end() - uml_physmem - iomem_size - MIN_VMALLOC; - /* Zones have to begin on a 1 << MAX_ORDER page boundary, + /* + * Zones have to begin on a 1 << MAX_ORDER page boundary, * so this makes sure that's true for highmem */ max_physmem &= ~((1 << (PAGE_SHIFT + MAX_ORDER)) - 1); - if(physmem_size + iomem_size > max_physmem){ + if (physmem_size + iomem_size > max_physmem) { highmem = physmem_size + iomem_size - max_physmem; physmem_size -= highmem; #ifndef CONFIG_HIGHMEM @@ -345,7 +332,7 @@ int __init linux_main(int argc, char **argv) start_vm = VMALLOC_START; setup_physmem(uml_physmem, uml_reserved, physmem_size, highmem); - if(init_maps(physmem_size, iomem_size, highmem)){ + if (init_maps(physmem_size, iomem_size, highmem)) { printf("Failed to allocate mem_map for %Lu bytes of physical " "memory and %Lu bytes of highmem\n", physmem_size, highmem); @@ -354,10 +341,11 @@ int __init linux_main(int argc, char **argv) virtmem_size = physmem_size; avail = get_kmem_end() - start_vm; - if(physmem_size > avail) virtmem_size = avail; + if (physmem_size > avail) + virtmem_size = avail; end_vm = start_vm + virtmem_size; - if(virtmem_size < physmem_size) + if (virtmem_size < physmem_size) printf("Kernel virtual memory size shrunk to %lu bytes\n", virtmem_size); |