[PATCH 3/3] sched: Remove ARCH specific fpu_counter from task_struct

[Vineet Gupta]

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@xxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
---
 include/linux/sched.h | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 078066d..b560364 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1051,15 +1051,6 @@ 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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