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authorMark Rutland <mark.rutland@arm.com>2016-11-03 23:23:05 +0300
committerCatalin Marinas <catalin.marinas@arm.com>2016-11-11 21:25:43 +0300
commita9ea0017ebe8889dfa136cac2aa7ae0ee6915e1f (patch)
treee47789a36980ca71cdc9c33f9790f73f31d21867 /arch/arm64/include/asm/thread_info.h
parent3fe12da4c7fa6491e0fb7c5371716ac7f8ea80a5 (diff)
downloadlinux-a9ea0017ebe8889dfa136cac2aa7ae0ee6915e1f.tar.xz
arm64: factor out current_stack_pointer
We define current_stack_pointer in <asm/thread_info.h>, though other files and header relying upon it do not have this necessary include, and are thus fragile to changes in the header soup. Subsequent patches will affect the header soup such that directly including <asm/thread_info.h> may result in a circular header include in some of these cases, so we can't simply include <asm/thread_info.h>. Instead, factor current_thread_info into its own header, and have all existing users include this explicitly. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Tested-by: Laura Abbott <labbott@redhat.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/thread_info.h')
-rw-r--r--arch/arm64/include/asm/thread_info.h6
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h
index 6ad76efbb3aa..bce0f07483c1 100644
--- a/arch/arm64/include/asm/thread_info.h
+++ b/arch/arm64/include/asm/thread_info.h
@@ -36,6 +36,7 @@
struct task_struct;
+#include <asm/stack_pointer.h>
#include <asm/types.h>
typedef unsigned long mm_segment_t;
@@ -62,11 +63,6 @@ struct thread_info {
#define init_stack (init_thread_union.stack)
/*
- * how to get the current stack pointer from C
- */
-register unsigned long current_stack_pointer asm ("sp");
-
-/*
* how to get the thread information struct from C
*/
static inline struct thread_info *current_thread_info(void) __attribute_const__;