From 2d6a958ab8f0aaa9c20738a0ac22ba94ae000362 Mon Sep 17 00:00:00 2001 From: franciscofranco Date: Sat, 5 Dec 2015 04:01:17 +0000 Subject: arm64: use the new *_relaxed macros for lower power usage Signed-off-by: franciscofranco Signed-off-by: Joe Maples Signed-off-by: Mister Oyster --- include/linux/sched.h | 2 +- include/linux/seqlock.h | 5 +++-- 2 files changed, 4 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 08bd577ac..aa76cc2ae 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2554,7 +2554,7 @@ static inline int test_and_clear_tsk_thread_flag(struct task_struct *tsk, int fl static inline int test_tsk_thread_flag(struct task_struct *tsk, int flag) { - return test_ti_thread_flag(task_thread_info(tsk), flag); + return test_ti_thread_flag_relaxed(task_thread_info(tsk), flag); } static inline void set_tsk_need_resched(struct task_struct *tsk) diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h index 182990574..d4cf5229c 100644 --- a/include/linux/seqlock.h +++ b/include/linux/seqlock.h @@ -29,6 +29,7 @@ #include #include #include +#include /* * Version using sequence counter only. @@ -61,9 +62,9 @@ static inline unsigned __read_seqcount_begin(const seqcount_t *s) unsigned ret; repeat: - ret = ACCESS_ONCE(s->sequence); + ret = cpu_relaxed_read((volatile u32 *)&s->sequence); if (unlikely(ret & 1)) { - cpu_relax(); + cpu_read_relax(); goto repeat; } return ret; -- cgit v1.2.3