Messages in this thread Patch in this message | | | From | Vineet Gupta <> | Subject | [RFC PATCH REBASED 3/3] sched: Remove ARCH specific fpu_counter from task_struct | Date | Tue, 17 Sep 2013 11:47:19 +0530 |
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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: Vineet Gupta <vgupta@synopsys.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> --- include/linux/sched.h | 9 --------- 1 file changed, 9 deletions(-)
diff --git a/include/linux/sched.h b/include/linux/sched.h index 6682da3..78386c1 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1046,15 +1046,6 @@ 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 -- 1.8.1.2
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