lkml.org 
[lkml]   [2021]   [Oct]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 06/14] sparse: add address_space __incoherent
Date
Some CPU architectures provide store instructions that are weakly
ordered with respect to other instructions that operate on the memory
hierarchy.
Add sparse address_space __incoherent to denote pointers used to
operate over these regions.

Signed-off-by: Ankur Arora <ankur.a.arora@oracle.com>
---
include/linux/compiler_types.h | 2 ++
1 file changed, 2 insertions(+)

diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h
index b6ff83a714ca..f7f68d7bc494 100644
--- a/include/linux/compiler_types.h
+++ b/include/linux/compiler_types.h
@@ -11,6 +11,7 @@
# define __iomem __attribute__((noderef, address_space(__iomem)))
# define __percpu __attribute__((noderef, address_space(__percpu)))
# define __rcu __attribute__((noderef, address_space(__rcu)))
+# define __incoherent __attribute__((noderef, address_space(__incoherent)))
static inline void __chk_user_ptr(const volatile void __user *ptr) { }
static inline void __chk_io_ptr(const volatile void __iomem *ptr) { }
/* context/locking */
@@ -37,6 +38,7 @@ static inline void __chk_io_ptr(const volatile void __iomem *ptr) { }
# define __iomem
# define __percpu
# define __rcu
+# define __incoherent
# define __chk_user_ptr(x) (void)0
# define __chk_io_ptr(x) (void)0
/* context/locking */
--
2.29.2
\
 
 \ /
  Last update: 2021-10-20 19:06    [W:0.190 / U:4.800 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site