![Jiri Slaby](/assets/img/avatar_default.png)
We need to call exit_thread from copy_process in a fail path. Since exit_thread on mn10300 calls exit_thread_runtime_instr, make it accept task_struct as a parameter now. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: "David S. Miller" <davem@davemloft.net> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Aurelien Jacquiot <a-jacquiot@ti.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chen Liqin <liqin.linux@gmail.com> Cc: Chris Metcalf <cmetcalf@mellanox.com> Cc: Chris Zankel <chris@zankel.net> Cc: David Howells <dhowells@redhat.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James Hogan <james.hogan@imgtec.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Jonas Bonn <jonas@southpole.se> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Lennox Wu <lennox.wu@gmail.com> Cc: Ley Foon Tan <lftan@altera.com> Cc: Mark Salter <msalter@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Mikael Starvik <starvik@axis.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Rich Felker <dalias@libc.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Richard Weinberger <richard@nod.at> Cc: Russell King <linux@arm.linux.org.uk> Cc: Steven Miao <realmz6@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
133 lines
3.6 KiB
C
133 lines
3.6 KiB
C
/* MN10300 FPU definitions
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*
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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* Derived from include/asm-i386/i387.h: Copyright (C) 1994 Linus Torvalds
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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#ifndef _ASM_FPU_H
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#define _ASM_FPU_H
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#ifndef __ASSEMBLY__
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#include <linux/sched.h>
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#include <asm/exceptions.h>
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#include <asm/sigcontext.h>
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#ifdef __KERNEL__
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extern asmlinkage void fpu_disabled(void);
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#ifdef CONFIG_FPU
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#ifdef CONFIG_LAZY_SAVE_FPU
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/* the task that currently owns the FPU state */
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extern struct task_struct *fpu_state_owner;
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#endif
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#if (THREAD_USING_FPU & ~0xff)
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#error THREAD_USING_FPU must be smaller than 0x100.
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#endif
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static inline void set_using_fpu(struct task_struct *tsk)
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{
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asm volatile(
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"bset %0,(0,%1)"
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:
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: "i"(THREAD_USING_FPU), "a"(&tsk->thread.fpu_flags)
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: "memory", "cc");
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}
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static inline void clear_using_fpu(struct task_struct *tsk)
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{
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asm volatile(
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"bclr %0,(0,%1)"
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:
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: "i"(THREAD_USING_FPU), "a"(&tsk->thread.fpu_flags)
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: "memory", "cc");
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}
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#define is_using_fpu(tsk) ((tsk)->thread.fpu_flags & THREAD_USING_FPU)
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extern asmlinkage void fpu_kill_state(struct task_struct *);
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extern asmlinkage void fpu_exception(struct pt_regs *, enum exception_code);
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extern asmlinkage void fpu_init_state(void);
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extern asmlinkage void fpu_save(struct fpu_state_struct *);
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extern int fpu_setup_sigcontext(struct fpucontext *buf);
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extern int fpu_restore_sigcontext(struct fpucontext *buf);
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static inline void unlazy_fpu(struct task_struct *tsk)
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{
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preempt_disable();
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#ifndef CONFIG_LAZY_SAVE_FPU
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if (tsk->thread.fpu_flags & THREAD_HAS_FPU) {
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fpu_save(&tsk->thread.fpu_state);
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tsk->thread.fpu_flags &= ~THREAD_HAS_FPU;
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tsk->thread.uregs->epsw &= ~EPSW_FE;
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}
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#else
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if (fpu_state_owner == tsk)
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fpu_save(&tsk->thread.fpu_state);
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#endif
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preempt_enable();
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}
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static inline void exit_fpu(struct task_struct *tsk)
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{
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#ifdef CONFIG_LAZY_SAVE_FPU
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preempt_disable();
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if (fpu_state_owner == tsk)
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fpu_state_owner = NULL;
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preempt_enable();
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#endif
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}
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static inline void flush_fpu(void)
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{
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struct task_struct *tsk = current;
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preempt_disable();
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#ifndef CONFIG_LAZY_SAVE_FPU
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if (tsk->thread.fpu_flags & THREAD_HAS_FPU) {
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tsk->thread.fpu_flags &= ~THREAD_HAS_FPU;
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tsk->thread.uregs->epsw &= ~EPSW_FE;
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}
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#else
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if (fpu_state_owner == tsk) {
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fpu_state_owner = NULL;
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tsk->thread.uregs->epsw &= ~EPSW_FE;
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}
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#endif
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preempt_enable();
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clear_using_fpu(tsk);
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}
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#else /* CONFIG_FPU */
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extern asmlinkage
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void unexpected_fpu_exception(struct pt_regs *, enum exception_code);
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#define fpu_exception unexpected_fpu_exception
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struct task_struct;
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struct fpu_state_struct;
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static inline bool is_using_fpu(struct task_struct *tsk) { return false; }
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static inline void set_using_fpu(struct task_struct *tsk) {}
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static inline void clear_using_fpu(struct task_struct *tsk) {}
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static inline void fpu_init_state(void) {}
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static inline void fpu_save(struct fpu_state_struct *s) {}
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static inline void fpu_kill_state(struct task_struct *tsk) {}
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static inline void unlazy_fpu(struct task_struct *tsk) {}
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static inline void exit_fpu(struct task_struct *tsk) {}
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static inline void flush_fpu(void) {}
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static inline int fpu_setup_sigcontext(struct fpucontext *buf) { return 0; }
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static inline int fpu_restore_sigcontext(struct fpucontext *buf) { return 0; }
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#endif /* CONFIG_FPU */
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#endif /* __KERNEL__ */
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#endif /* !__ASSEMBLY__ */
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#endif /* _ASM_FPU_H */
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