[PATCH v3 6/7] unicore32: Use simpler API for random address requests

From: Jason Cooper
Date: Wed Aug 03 2016 - 19:42:18 EST


Currently, all callers to randomize_range() set the length to 0 and
calculate end by adding a constant to the start address. We can
simplify the API to remove a bunch of needless checks and variables.

Use the new randomize_addr(start, range) call to set the requested
address.

Signed-off-by: Jason Cooper <jason@xxxxxxxxxxxxxx>
---
Changes from v2:
- s/randomize_addr/randomize_page/ (Kees Cook)

arch/unicore32/kernel/process.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/unicore32/kernel/process.c b/arch/unicore32/kernel/process.c
index 00299c927852..d7c6b676b3a5 100644
--- a/arch/unicore32/kernel/process.c
+++ b/arch/unicore32/kernel/process.c
@@ -295,8 +295,7 @@ unsigned long get_wchan(struct task_struct *p)

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;
+ return randomize_page(mm->brk, 0x02000000);
}

/*
--
2.9.2