TononixOS/ubports_kernel_google_msm
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x86: merge process.c a bit

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Merge arch_align_stack() and arch_randomize_brk(), since
they are the same.

Tested on x86_64.

[ Impact: cleanup ]

Signed-off-by: Amerigo Wang <amwang@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Amerigo Wang
2009-05-11 22:05:28 -04:00
committed by Ingo Molnar
parent 087fa4e964
commit 9d62dcdfa6
3 changed files with 14 additions and 26 deletions
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14
arch/x86/kernel/process.c
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@@ -8,6 +8,7 @@
#include <linux/module.h>
#include <linux/pm.h>
#include <linux/clockchips.h>
#include <linux/random.h>
#include <trace/power.h>
#include <asm/system.h>
#include <asm/apic.h>
@@ -613,3 +614,16 @@ static int __init idle_setup(char *str)
}
early_param("idle", idle_setup);
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
sp -= get_random_int() % 8192;
return sp & ~0xf;
}
unsigned long arch_randomize_brk(struct mm_struct *mm)
{
unsigned long range_end = mm->brk + 0x02000000;
return randomize_range(mm->brk, range_end, 0) ? : mm->brk;
}