diff options
| author | Jan Beulich <jbeulich@novell.com> | 2008-07-18 13:37:53 +0100 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2008-07-18 14:34:08 -0700 |
| commit | 369c99205f633d1e4038b15f5dc4a5500a4359c3 (patch) | |
| tree | f79448fc94d6102dab5a7202ec598cb13c21d652 /arch/x86/vdso | |
| parent | 812b121d55316333a3480b294523d4e52f9dd366 (diff) | |
| download | op-kernel-dev-369c99205f633d1e4038b15f5dc4a5500a4359c3.zip op-kernel-dev-369c99205f633d1e4038b15f5dc4a5500a4359c3.tar.gz | |
x86: fix two modpost warnings
Even though it's only the difference of the two __initdata symbols
that's being calculated, modpost still doesn't like this. So rather
calculate the size once in an __init function and store it for later
use.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/vdso')
| -rw-r--r-- | arch/x86/vdso/vma.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/x86/vdso/vma.c b/arch/x86/vdso/vma.c index 19a6cfa..257ba4a 100644 --- a/arch/x86/vdso/vma.c +++ b/arch/x86/vdso/vma.c @@ -21,7 +21,8 @@ unsigned int __read_mostly vdso_enabled = 1; extern char vdso_start[], vdso_end[]; extern unsigned short vdso_sync_cpuid; -struct page **vdso_pages; +static struct page **vdso_pages; +static unsigned vdso_size; static inline void *var_ref(void *p, char *name) { @@ -38,6 +39,7 @@ static int __init init_vdso_vars(void) int i; char *vbase; + vdso_size = npages << PAGE_SHIFT; vdso_pages = kmalloc(sizeof(struct page *) * npages, GFP_KERNEL); if (!vdso_pages) goto oom; @@ -101,20 +103,19 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int exstack) struct mm_struct *mm = current->mm; unsigned long addr; int ret; - unsigned len = round_up(vdso_end - vdso_start, PAGE_SIZE); if (!vdso_enabled) return 0; down_write(&mm->mmap_sem); - addr = vdso_addr(mm->start_stack, len); - addr = get_unmapped_area(NULL, addr, len, 0, 0); + addr = vdso_addr(mm->start_stack, vdso_size); + addr = get_unmapped_area(NULL, addr, vdso_size, 0, 0); if (IS_ERR_VALUE(addr)) { ret = addr; goto up_fail; } - ret = install_special_mapping(mm, addr, len, + ret = install_special_mapping(mm, addr, vdso_size, VM_READ|VM_EXEC| VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC| VM_ALWAYSDUMP, |
