Commit 78c85161 authored by Vincenzo Frascino's avatar Vincenzo Frascino Committed by Thomas Gleixner

arm: vdso: Enable arm to use common headers

Enable arm to use only the common headers in the implementation
of the vDSO library.
Signed-off-by: default avatarVincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: Russell King <linux@armlinux.org.uk>
Link: https://lkml.kernel.org/r/20200320145351.32292-25-vincenzo.frascino@arm.com
parent abc22418
...@@ -50,25 +50,7 @@ ...@@ -50,25 +50,7 @@
#ifdef CONFIG_CPU_CP15 #ifdef CONFIG_CPU_CP15
#define __ACCESS_CP15(CRn, Op1, CRm, Op2) \ #include <asm/vdso/cp15.h>
"mrc", "mcr", __stringify(p15, Op1, %0, CRn, CRm, Op2), u32
#define __ACCESS_CP15_64(Op1, CRm) \
"mrrc", "mcrr", __stringify(p15, Op1, %Q0, %R0, CRm), u64
#define __read_sysreg(r, w, c, t) ({ \
t __val; \
asm volatile(r " " c : "=r" (__val)); \
__val; \
})
#define read_sysreg(...) __read_sysreg(__VA_ARGS__)
#define __write_sysreg(v, r, w, c, t) asm volatile(w " " c : : "r" ((t)(v)))
#define write_sysreg(v, ...) __write_sysreg(v, __VA_ARGS__)
#define BPIALL __ACCESS_CP15(c7, 0, c5, 6)
#define ICIALLU __ACCESS_CP15(c7, 0, c5, 0)
#define CNTVCT __ACCESS_CP15_64(1, c14)
extern unsigned long cr_alignment; /* defined in entry-armv.S */ extern unsigned long cr_alignment; /* defined in entry-armv.S */
......
...@@ -14,6 +14,7 @@ ...@@ -14,6 +14,7 @@
#include <asm/ptrace.h> #include <asm/ptrace.h>
#include <asm/types.h> #include <asm/types.h>
#include <asm/unified.h> #include <asm/unified.h>
#include <asm/vdso/processor.h>
#ifdef __KERNEL__ #ifdef __KERNEL__
#define STACK_TOP ((current->personality & ADDR_LIMIT_32BIT) ? \ #define STACK_TOP ((current->personality & ADDR_LIMIT_32BIT) ? \
...@@ -85,16 +86,6 @@ extern void release_thread(struct task_struct *); ...@@ -85,16 +86,6 @@ extern void release_thread(struct task_struct *);
unsigned long get_wchan(struct task_struct *p); unsigned long get_wchan(struct task_struct *p);
#if __LINUX_ARM_ARCH__ == 6 || defined(CONFIG_ARM_ERRATA_754327)
#define cpu_relax() \
do { \
smp_mb(); \
__asm__ __volatile__("nop; nop; nop; nop; nop; nop; nop; nop; nop; nop;"); \
} while (0)
#else
#define cpu_relax() barrier()
#endif
#define task_pt_regs(p) \ #define task_pt_regs(p) \
((struct pt_regs *)(THREAD_START_SP + task_stack_page(p)) - 1) ((struct pt_regs *)(THREAD_START_SP + task_stack_page(p)) - 1)
......
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2020 ARM Ltd.
*/
#ifndef __ASM_VDSO_CP15_H
#define __ASM_VDSO_CP15_H
#ifndef __ASSEMBLY__
#ifdef CONFIG_CPU_CP15
#include <linux/stringify.h>
#define __ACCESS_CP15(CRn, Op1, CRm, Op2) \
"mrc", "mcr", __stringify(p15, Op1, %0, CRn, CRm, Op2), u32
#define __ACCESS_CP15_64(Op1, CRm) \
"mrrc", "mcrr", __stringify(p15, Op1, %Q0, %R0, CRm), u64
#define __read_sysreg(r, w, c, t) ({ \
t __val; \
asm volatile(r " " c : "=r" (__val)); \
__val; \
})
#define read_sysreg(...) __read_sysreg(__VA_ARGS__)
#define __write_sysreg(v, r, w, c, t) asm volatile(w " " c : : "r" ((t)(v)))
#define write_sysreg(v, ...) __write_sysreg(v, __VA_ARGS__)
#define BPIALL __ACCESS_CP15(c7, 0, c5, 6)
#define ICIALLU __ACCESS_CP15(c7, 0, c5, 0)
#define CNTVCT __ACCESS_CP15_64(1, c14)
#endif /* CONFIG_CPU_CP15 */
#endif /* __ASSEMBLY__ */
#endif /* __ASM_VDSO_CP15_H */
...@@ -7,9 +7,9 @@ ...@@ -7,9 +7,9 @@
#ifndef __ASSEMBLY__ #ifndef __ASSEMBLY__
#include <asm/barrier.h> #include <asm/errno.h>
#include <asm/cp15.h>
#include <asm/unistd.h> #include <asm/unistd.h>
#include <asm/vdso/cp15.h>
#include <uapi/linux/time.h> #include <uapi/linux/time.h>
#define VDSO_HAS_CLOCK_GETRES 1 #define VDSO_HAS_CLOCK_GETRES 1
......
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2020 ARM Ltd.
*/
#ifndef __ASM_VDSO_PROCESSOR_H
#define __ASM_VDSO_PROCESSOR_H
#ifndef __ASSEMBLY__
#if __LINUX_ARM_ARCH__ == 6 || defined(CONFIG_ARM_ERRATA_754327)
#define cpu_relax() \
do { \
smp_mb(); \
__asm__ __volatile__("nop; nop; nop; nop; nop; nop; nop; nop; nop; nop;"); \
} while (0)
#else
#define cpu_relax() barrier()
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ASM_VDSO_PROCESSOR_H */
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