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6d0d287891
No need to duplicate the same define everywhere. Since the only user is stop-machine and the only provider is s390, we can use a default implementation of cpu_relax_yield() in sched.h. Suggested-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Noam Camus <noamc@ezchip.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: kvm@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-s390 <linux-s390@vger.kernel.org> Cc: linuxppc-dev@lists.ozlabs.org Cc: sparclinux@vger.kernel.org Cc: virtualization@lists.linux-foundation.org Cc: xen-devel@lists.xenproject.org Link: http://lkml.kernel.org/r/1479298985-191589-1-git-send-email-borntraeger@de.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
/*
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* Copyright (C) 2013 Altera Corporation
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* Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch>
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* Copyright (C) 2004 Microtronix Datacom Ltd
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* Copyright (C) 2001 Ken Hill (khill@microtronix.com)
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* Vic Phillips (vic@microtronix.com)
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*
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* based on SPARC asm/processor_32.h which is:
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*
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* Copyright (C) 1994 David S. Miller
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#ifndef _ASM_NIOS2_PROCESSOR_H
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#define _ASM_NIOS2_PROCESSOR_H
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#include <asm/ptrace.h>
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#include <asm/registers.h>
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#include <asm/page.h>
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#define NIOS2_FLAG_KTHREAD 0x00000001 /* task is a kernel thread */
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#define NIOS2_OP_NOP 0x1883a
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#define NIOS2_OP_BREAK 0x3da03a
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#ifdef __KERNEL__
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#define STACK_TOP TASK_SIZE
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#define STACK_TOP_MAX STACK_TOP
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#endif /* __KERNEL__ */
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/* Kuser helpers is mapped to this user space address */
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#define KUSER_BASE 0x1000
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#define KUSER_SIZE (PAGE_SIZE)
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#ifndef __ASSEMBLY__
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/*
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* Default implementation of macro that returns current
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* instruction pointer ("program counter").
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*/
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#define current_text_addr() ({ __label__ _l; _l: &&_l; })
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# define TASK_SIZE 0x7FFF0000UL
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# define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3))
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/* The Nios processor specific thread struct. */
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struct thread_struct {
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struct pt_regs *kregs;
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/* Context switch saved kernel state. */
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unsigned long ksp;
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unsigned long kpsr;
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};
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#define INIT_MMAP \
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{ &init_mm, (0), (0), __pgprot(0x0), VM_READ | VM_WRITE | VM_EXEC }
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# define INIT_THREAD { \
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.kregs = NULL, \
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.ksp = 0, \
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.kpsr = 0, \
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}
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extern void start_thread(struct pt_regs *regs, unsigned long pc,
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unsigned long sp);
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struct task_struct;
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/* Free all resources held by a thread. */
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static inline void release_thread(struct task_struct *dead_task)
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{
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}
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/* Return saved PC of a blocked thread. */
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#define thread_saved_pc(tsk) ((tsk)->thread.kregs->ea)
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extern unsigned long get_wchan(struct task_struct *p);
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#define task_pt_regs(p) \
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((struct pt_regs *)(THREAD_SIZE + task_stack_page(p)) - 1)
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/* Used by procfs */
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#define KSTK_EIP(tsk) ((tsk)->thread.kregs->ea)
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#define KSTK_ESP(tsk) ((tsk)->thread.kregs->sp)
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#define cpu_relax() barrier()
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#endif /* __ASSEMBLY__ */
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#endif /* _ASM_NIOS2_PROCESSOR_H */
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