Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1337934

[PATCH v2 1/3] tools/liblockdep: add userspace version of READ_ONCE

Show all headers | View raw

From: Alfredo Alvarez Fernandez <alfredoalvarezfernandez@gmail.com>

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>
---
 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)
 
-- 
2.5.0

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH 0/3] lockdep: liblockdep: Prevent chain_key collisions Alfredo Alvarez Fernandez <alfredoalvarezfernandez@gmail.com> - 2016-02-11 00:40 +0100
  [PATCH 3/3] lockdep: prevent chain_key collisions Alfredo Alvarez Fernandez <alfredoalvarezfernandez@gmail.com> - 2016-02-11 00:40 +0100
    Re: [PATCH 3/3] lockdep: prevent chain_key collisions Ingo Molnar <mingo@kernel.org> - 2016-02-17 09:40 +0100
      [PATCH v2 2/3] tools/liblockdep: add tests Alfredo Alvarez Fernandez <alfredoalvarezfernandez@gmail.com> - 2016-02-19 07:50 +0100
      [PATCH v2 0/3] lockdep: liblockdep: Prevent chain_key collisions Alfredo Alvarez Fernandez <alfredoalvarezfernandez@gmail.com> - 2016-02-19 07:50 +0100
        [PATCH v2 3/3] lockdep: prevent and detect chain_key collisions Alfredo Alvarez Fernandez <alfredoalvarezfernandez@gmail.com> - 2016-02-19 08:00 +0100
        [PATCH v2 1/3] tools/liblockdep: add userspace version of READ_ONCE Alfredo Alvarez Fernandez <alfredoalvarezfernandez@gmail.com> - 2016-02-19 08:00 +0100
  Re: [PATCH 0/3] lockdep: liblockdep: Prevent chain_key collisions Sasha Levin <sasha.levin@oracle.com> - 2016-02-16 17:40 +0100
    Re: [PATCH 0/3] lockdep: liblockdep: Prevent chain_key collisions Peter Zijlstra <peterz@infradead.org> - 2016-02-16 18:30 +0100

csiph-web