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>
This commit is contained in:
parent
3fe12da4c7
commit
a9ea0017eb
|
@ -16,6 +16,8 @@
|
|||
#ifndef __ASM_PERCPU_H
|
||||
#define __ASM_PERCPU_H
|
||||
|
||||
#include <asm/stack_pointer.h>
|
||||
|
||||
static inline void set_my_cpu_offset(unsigned long off)
|
||||
{
|
||||
asm volatile("msr tpidr_el1, %0" :: "r" (off) : "memory");
|
||||
|
|
|
@ -17,6 +17,8 @@
|
|||
#ifndef __ASM_PERF_EVENT_H
|
||||
#define __ASM_PERF_EVENT_H
|
||||
|
||||
#include <asm/stack_pointer.h>
|
||||
|
||||
#define ARMV8_PMU_MAX_COUNTERS 32
|
||||
#define ARMV8_PMU_COUNTER_MASK (ARMV8_PMU_MAX_COUNTERS - 1)
|
||||
|
||||
|
|
9
arch/arm64/include/asm/stack_pointer.h
Normal file
9
arch/arm64/include/asm/stack_pointer.h
Normal file
|
@ -0,0 +1,9 @@
|
|||
#ifndef __ASM_STACK_POINTER_H
|
||||
#define __ASM_STACK_POINTER_H
|
||||
|
||||
/*
|
||||
* how to get the current stack pointer from C
|
||||
*/
|
||||
register unsigned long current_stack_pointer asm ("sp");
|
||||
|
||||
#endif /* __ASM_STACK_POINTER_H */
|
|
@ -36,6 +36,7 @@
|
|||
|
||||
struct task_struct;
|
||||
|
||||
#include <asm/stack_pointer.h>
|
||||
#include <asm/types.h>
|
||||
|
||||
typedef unsigned long mm_segment_t;
|
||||
|
@ -61,11 +62,6 @@ 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
|
||||
*/
|
||||
|
|
|
@ -12,6 +12,7 @@
|
|||
#include <linux/export.h>
|
||||
#include <linux/ftrace.h>
|
||||
|
||||
#include <asm/stack_pointer.h>
|
||||
#include <asm/stacktrace.h>
|
||||
|
||||
struct return_address_data {
|
||||
|
|
|
@ -22,6 +22,7 @@
|
|||
#include <linux/stacktrace.h>
|
||||
|
||||
#include <asm/irq.h>
|
||||
#include <asm/stack_pointer.h>
|
||||
#include <asm/stacktrace.h>
|
||||
|
||||
/*
|
||||
|
|
|
@ -38,6 +38,7 @@
|
|||
#include <asm/esr.h>
|
||||
#include <asm/insn.h>
|
||||
#include <asm/traps.h>
|
||||
#include <asm/stack_pointer.h>
|
||||
#include <asm/stacktrace.h>
|
||||
#include <asm/exception.h>
|
||||
#include <asm/system_misc.h>
|
||||
|
|
Loading…
Reference in a new issue