There are two callers of __unlazy_fpu, unlazy_fpu and __switch_to, and none of them appear to require additional preempt_disable/enable here. Let's open-code save_init_fpu in __unlazy_fpu to save a few ops. Signed-off-by: Jan Kiszka <[email protected]> --- include/asm-i386/i387.h | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) Index: linux-2.6/include/asm-i386/i387.h =================================================================== --- linux-2.6.orig/include/asm-i386/i387.h +++ linux-2.6/include/asm-i386/i387.h @@ -74,11 +74,12 @@ static inline void __save_init_fpu( stru task_thread_info(tsk)->status &= ~TS_USEDFPU; } -#define __unlazy_fpu( tsk ) do { \ - if (task_thread_info(tsk)->status & TS_USEDFPU) \ - save_init_fpu( tsk ); \ - else \ - tsk->fpu_counter = 0; \ +#define __unlazy_fpu( tsk ) do { \ + if (task_thread_info(tsk)->status & TS_USEDFPU) { \ + __save_init_fpu(tsk); \ + stts(); \ + } else \ + tsk->fpu_counter = 0; \ } while (0) #define __clear_fpu( tsk ) \
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