[RFC patch 3/6] ARM: Use simpler API for random address requests

[Jason Cooper]

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

diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 4a803c5a1ff7..02dee671cded 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -314,8 +314,7 @@ unsigned long get_wchan(struct task_struct *p)
 
 unsigned long arch_randomize_brk(struct mm_struct *mm)
 {
-   unsigned long range_end = mm->brk + 0x0200;
-   return randomize_range(mm->brk, range_end, 0) ? : mm->brk;
+   return randomize_addr(mm->brk, 0x0200);
 }
 
 #ifdef CONFIG_MMU
-- 
2.9.2

[RFC patch 3/6] ARM: Use simpler API for random address requests

[Jason Cooper]

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

diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 4a803c5a1ff7..02dee671cded 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -314,8 +314,7 @@ unsigned long get_wchan(struct task_struct *p)
 
 unsigned long arch_randomize_brk(struct mm_struct *mm)
 {
-   unsigned long range_end = mm->brk + 0x0200;
-   return randomize_range(mm->brk, range_end, 0) ? : mm->brk;
+   return randomize_addr(mm->brk, 0x0200);
 }
 
 #ifdef CONFIG_MMU
-- 
2.9.2