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x86/fpu: Factor out the FPU regset code into fpu/regset.c

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So much of fpu/core.c is the regset code, but it just obscures the generic
FPU state machine logic. Factor out the regset code into fpu/regset.c, where
it can be read in isolation.

This affects one API: fpu__activate_stopped() has to be made available
from the core to fpu/regset.c.

No change in functionality.

Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar
2015-04-30 12:59:30 +02:00
parent b992c660d3
commit 0c306bcfba
4 changed files with 360 additions and 354 deletions
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4
arch/x86/include/asm/fpu/internal.h
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@@ -29,8 +29,6 @@ extern void fpu__init_system_xstate(void);
extern void fpu__init_cpu_xstate(void);
extern void fpu__init_system(struct cpuinfo_x86 *c);
extern void fpu__activate_curr(struct fpu *fpu);
extern void fpstate_init(union thread_xstate *state);
#ifdef CONFIG_MATH_EMULATION
extern void fpstate_init_soft(struct i387_soft_struct *soft);
@@ -49,6 +47,8 @@ extern int fpu__exception_code(struct fpu *fpu, int trap_nr);
/*
* High level FPU state handling functions:
*/
extern void fpu__activate_curr(struct fpu *fpu);
extern void fpu__activate_stopped(struct fpu *fpu);
extern void fpu__save(struct fpu *fpu);
extern void fpu__restore(void);
extern int fpu__restore_sig(void __user *buf, int ia32_frame);