diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-09-17 20:52:23 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-09-17 20:53:10 +0200 |
| commit | 45bd00d31de886f8425b4dd33204b911b0a466a9 (patch) | |
| tree | 06204f2452e02ca916666173d50f5035d69065ef /arch/x86/include/asm/i387.h | |
| parent | 40d9d82c8ab8c4e2373a23a1e31dc8d84c53aa01 (diff) | |
| parent | ab86e5765d41a5eb4239a1c04d613db87bea5ed8 (diff) | |
Merge branch 'linus' into tracing/core
Merge reason: Pick up kernel/softirq.c update for dependent fix.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/include/asm/i387.h')
| -rw-r--r-- | arch/x86/include/asm/i387.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/include/asm/i387.h b/arch/x86/include/asm/i387.h index 175adf58dd4..0b20bbb758f 100644 --- a/arch/x86/include/asm/i387.h +++ b/arch/x86/include/asm/i387.h @@ -26,6 +26,7 @@ extern void fpu_init(void); extern void mxcsr_feature_mask_init(void); extern int init_fpu(struct task_struct *child); extern asmlinkage void math_state_restore(void); +extern void __math_state_restore(void); extern void init_thread_xstate(void); extern int dump_fpu(struct pt_regs *, struct user_i387_struct *); @@ -301,6 +302,14 @@ static inline void kernel_fpu_end(void) preempt_enable(); } +static inline bool irq_fpu_usable(void) +{ + struct pt_regs *regs; + + return !in_interrupt() || !(regs = get_irq_regs()) || \ + user_mode(regs) || (read_cr0() & X86_CR0_TS); +} + /* * Some instructions like VIA's padlock instructions generate a spurious * DNA fault but don't modify SSE registers. And these instructions |