Messages in this thread Patch in this message | | | Date | Mon, 29 Feb 2016 03:22:59 -0800 | From | tip-bot for Alfredo Alvarez Fernandez <> | Subject | [tip:locking/core] tools/lib/lockdep: Add userspace version of READ_ONCE() |
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Commit-ID: 9d5a23ac8e0ede14a2b23740d231727ba5be483a Gitweb: http://git.kernel.org/tip/9d5a23ac8e0ede14a2b23740d231727ba5be483a Author: Alfredo Alvarez Fernandez <alfredoalvarezfernandez@gmail.com> AuthorDate: Fri, 19 Feb 2016 07:48:51 +0100 Committer: Ingo Molnar <mingo@kernel.org> CommitDate: Mon, 29 Feb 2016 10:29:27 +0100
tools/lib/lockdep: Add userspace version of READ_ONCE()
This was added to the kernel code in <1658d35ead5d> ("list: Use READ_ONCE() when testing for empty lists").
There's nothing special we need to do about it in userspace.
Signed-off-by: Alfredo Alvarez Fernandez <alfredoalvarezfernandez@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sasha Levin <sasha.levin@oracle.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1455864533-7536-2-git-send-email-alfredoalvarezernandez@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org> --- tools/lib/lockdep/uinclude/linux/compiler.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/tools/lib/lockdep/uinclude/linux/compiler.h b/tools/lib/lockdep/uinclude/linux/compiler.h index 6386dc3..fd3e56a 100644 --- a/tools/lib/lockdep/uinclude/linux/compiler.h +++ b/tools/lib/lockdep/uinclude/linux/compiler.h @@ -3,6 +3,7 @@ #define __used __attribute__((__unused__)) #define unlikely +#define READ_ONCE(x) (x) #define WRITE_ONCE(x, val) x=(val) #define RCU_INIT_POINTER(p, v) p=(v)
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