diff options
| author | Ingo Molnar <mingo@kernel.org> | 2015-04-03 12:02:02 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-05-19 15:47:10 +0200 |
| commit | 97185c95f7ab7f752473c34672dab0925758094b (patch) | |
| tree | 287e1d57d678656ada4da43572d1defef7d3ae7e /arch/x86/include/asm/i387.h | |
| parent | 68ad8b9feae583cc5102ec86ad410fce542a5311 (diff) | |
x86/fpu: Split an fpstate_alloc_init() function out of init_fpu()
Most init_fpu() users don't want the register-saving aspect of the
function, they are calling it for 'current' and when FPU registers
are not allocated and initialized yet.
Split out a simplified API that does just that (and add debug-checks
for these conditions): fpstate_alloc_init().
Use it where appropriate.
Reviewed-by: Borislav Petkov <bp@alien8.de>
Cc: Andy Lutomirski <luto@amacapital.net>
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>
Diffstat (limited to 'arch/x86/include/asm/i387.h')
| -rw-r--r-- | arch/x86/include/asm/i387.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/i387.h b/arch/x86/include/asm/i387.h index d4419da9b210..1a896b4533c4 100644 --- a/arch/x86/include/asm/i387.h +++ b/arch/x86/include/asm/i387.h @@ -18,7 +18,10 @@ struct pt_regs; struct user_i387_struct; +extern int fpstate_alloc_init(struct task_struct *curr); + extern int init_fpu(struct task_struct *child); + extern void fpu_finit(struct fpu *fpu); extern int dump_fpu(struct pt_regs *, struct user_i387_struct *); extern void math_state_restore(void); |