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powerpc/processor: Move cpu_relax() into asm/vdso/processor.h

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cpu_relax() need to be in asm/vdso/processor.h to be used by
the C VDSO generic library.

Move it there.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201126131006.2431205-2-mpe@ellerman.id.au
This commit is contained in:
Christophe Leroy 2020-11-27 00:09:59 +11:00 committed by Michael Ellerman
parent 8d1eeabf25
commit 8f8cffd9df
2 changed files with 25 additions and 11 deletions
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13
arch/powerpc/include/asm/processor.h
View file

@ -6,6 +6,8 @@
* Copyright (C) 2001 PPC 64 Team, IBM Corp
*/
#include <vdso/processor.h>
#include <asm/reg.h>
#ifdef CONFIG_VSX
@ -63,14 +65,6 @@ extern int _chrp_type;
#endif /* defined(__KERNEL__) && defined(CONFIG_PPC32) */
/* Macros for adjusting thread priority (hardware multi-threading) */
#define HMT_very_low() asm volatile("or 31,31,31 # very low priority")
#define HMT_low() asm volatile("or 1,1,1 # low priority")
#define HMT_medium_low() asm volatile("or 6,6,6 # medium low priority")
#define HMT_medium() asm volatile("or 2,2,2 # medium priority")
#define HMT_medium_high() asm volatile("or 5,5,5 # medium high priority")
#define HMT_high() asm volatile("or 3,3,3 # high priority")
#ifdef __KERNEL__
#ifdef CONFIG_PPC64
@ -344,7 +338,6 @@ static inline unsigned long __pack_fe01(unsigned int fpmode)
}
#ifdef CONFIG_PPC64
#define cpu_relax() do { HMT_low(); HMT_medium(); barrier(); } while (0)
#define spin_begin() HMT_low()
@ -363,8 +356,6 @@ do { \
} \
} while (0)
#else
#define cpu_relax() barrier()
#endif
/* Check that a certain kernel stack pointer is valid in task_struct p */

23
arch/powerpc/include/asm/vdso/processor.h Normal file
View file

@ -0,0 +1,23 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _ASM_POWERPC_VDSO_PROCESSOR_H
#define _ASM_POWERPC_VDSO_PROCESSOR_H
#ifndef __ASSEMBLY__
/* Macros for adjusting thread priority (hardware multi-threading) */
#define HMT_very_low() asm volatile("or 31, 31, 31 # very low priority")
#define HMT_low() asm volatile("or 1, 1, 1 # low priority")
#define HMT_medium_low() asm volatile("or 6, 6, 6 # medium low priority")
#define HMT_medium() asm volatile("or 2, 2, 2 # medium priority")
#define HMT_medium_high() asm volatile("or 5, 5, 5 # medium high priority")
#define HMT_high() asm volatile("or 3, 3, 3 # high priority")
#ifdef CONFIG_PPC64
#define cpu_relax() do { HMT_low(); HMT_medium(); barrier(); } while (0)
#else
#define cpu_relax() barrier()
#endif
#endif /* __ASSEMBLY__ */
#endif /* _ASM_POWERPC_VDSO_PROCESSOR_H */