A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-28 10:41:38 -04:00
Code Issues Projects Releases Packages Wiki Activity

atomic, arch: Audit atomic_{read,set}()

Browse source 
This patch makes sure that atomic_{read,set}() are at least
{READ,WRITE}_ONCE().

We already had the 'requirement' that atomic_read() should use
ACCESS_ONCE(), and most archs had this, but a few were lacking.
All are now converted to use READ_ONCE().

And, by a symmetry and general paranoia argument, upgrade atomic_set()
to use WRITE_ONCE().

Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Peter Zijlstra 2015-09-18 11:13:10 +02:00 • committed by Ingo Molnar
commit 62e8a3258b
24 changed files with 53 additions and 53 deletions
Download patch file Download diff file Expand all files Collapse all files

2
arch/hexagon/include/asm/atomic.h
View file

@ -48,7 +48,7 @@ static inline void atomic_set(atomic_t *v, int new)
*
* Assumes all word reads on our architecture are atomic.
*/
#define atomic_read(v) ((v)->counter)
#define atomic_read(v) READ_ONCE((v)->counter)
/**
* atomic_xchg - atomic