Commit 61031952f4c8 ("arch, x86: pmem api for ensuring durability of
persistent memory updates")
defined __pmem in include/linux/compiler.h only for the case
CONFIG_RCU_SPARSE_POINTER=n, probably by accident.
With CONFIG_RCU_SPARSE_POINTER=y a sparse compile gives the error:
CHECK init/main.c
arch/x86/include/asm/io.h:251:27: error: void declaration
arch/x86/include/asm/io.h:251:27: error: Expected ; at end of declaration
arch/x86/include/asm/io.h:251:27: error: got *
arch/x86/include/asm/io.h:255:1: error: Expected ; at the end of
type declaration
arch/x86/include/asm/io.h:255:1: error: got }
This happens because the __pmem in
arch/x86/include/asm/io.h:251:
static inline void __pmem *arch_memremap_pmem([...])
is undefined.
Define __pmem unconditionally in include/linux/compiler.h.
Signed-off-by: Nicolai Stange <[email protected]>
---
include/linux/compiler.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 7f8ad95..4f85b58 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -21,8 +21,8 @@
# define __rcu __attribute__((noderef, address_space(4)))
#else
# define __rcu
-# define __pmem __attribute__((noderef, address_space(5)))
#endif
+# define __pmem __attribute__((noderef, address_space(5)))
extern void __chk_user_ptr(const volatile void __user *);
extern void __chk_io_ptr(const volatile void __iomem *);
#else
--
2.4.5
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