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Commit 27f69e68a5e534412faebc53a4e04acc9ce7fd7e

Authored by Vineet Gupta
Committed by Linus Torvalds
1 parent c375f15a43
Exists in smarc-imx_3.14.28_1.0.0_ga and in 1 other branch imx_3.14.28_1.0.0_ga

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: Vineet Gupta <vgupta@synopsys.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mundt <paul.mundt@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Showing 1 changed file with 0 additions and 9 deletions Side-by-side Diff

include/linux/sched.h
Diff comments   View file @ 27f69e6
... ... @@ -1062,15 +1062,6 @@
1062 1062 struct hlist_head preempt_notifiers;
1063 1063 #endif
1064 1064  
1065   - /*
1066   - * fpu_counter contains the number of consecutive context switches
1067   - * that the FPU is used. If this is over a threshold, the lazy fpu
1068   - * saving becomes unlazy to save the trap. This is an unsigned char
1069   - * so that after 256 times the counter wraps and the behavior turns
1070   - * lazy again; this to deal with bursty apps that only use FPU for
1071   - * a short time
1072   - */
1073   - unsigned char fpu_counter;
1074 1065 #ifdef CONFIG_BLK_DEV_IO_TRACE
1075 1066 unsigned int btrace_seq;
1076 1067 #endif