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ARM: cleanup gate_vma initialization 

Three's no need to have code initializing this by hand; it's more
efficient to initialize the constant structure members directly.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
hifive-unleashed-5.1
Russell King 2013-02-23 17:55:39 +00:00
parent d3f79584a8
commit f6604efe0b
1 changed files with 7 additions and 6 deletions
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13
arch/arm/kernel/process.c
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@ -464,15 +464,16 @@ unsigned long arch_randomize_brk(struct mm_struct *mm)
* atomic helpers and the signal restart code. Insert it into the
* gate_vma so that it is visible through ptrace and /proc/<pid>/mem.
*/
static struct vm_area_struct gate_vma;
static struct vm_area_struct gate_vma = {
.vm_start = 0xffff0000,
.vm_end = 0xffff0000 + PAGE_SIZE,
.vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC,
.vm_mm = &init_mm,
};
static int __init gate_vma_init(void)
{
gate_vma.vm_start = 0xffff0000;
gate_vma.vm_end = 0xffff0000 + PAGE_SIZE;
gate_vma.vm_page_prot = PAGE_READONLY_EXEC;
gate_vma.vm_flags = VM_READ | VM_EXEC |
VM_MAYREAD | VM_MAYEXEC;
gate_vma.vm_page_prot = PAGE_READONLY_EXEC;
return 0;
}
arch_initcall(gate_vma_init);