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Commit 27f69e68 authored by Vineet Gupta's avatar Vineet Gupta Committed by Linus Torvalds
Browse files

sched: remove ARCH specific fpu_counter from task_struct 



fpu_counter in task_struct was used only by sh/x86.  Both of these now
carry it in ARCH specific thread_struct, hence this can now be removed
from generic task_struct, shrinking it slightly for other arches.

Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mundt <paul.mundt@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent c375f15a

include/linux/sched.h

+0 −9
Original line number Diff line number Diff line
@@ -1062,15 +1062,6 @@ struct task_struct { 
	struct hlist_head preempt_notifiers;

#endif



	/*

	 * fpu_counter contains the number of consecutive context switches

	 * that the FPU is used. If this is over a threshold, the lazy fpu

	 * saving becomes unlazy to save the trap. This is an unsigned char

	 * so that after 256 times the counter wraps and the behavior turns

	 * lazy again; this to deal with bursty apps that only use FPU for

	 * a short time

	 */

	unsigned char fpu_counter;

#ifdef CONFIG_BLK_DEV_IO_TRACE

	unsigned int btrace_seq;

#endif