sched: Update documentation and comments

Change sched_*.c to sched/*.c in documentation and comments.

Signed-off-by: Hiroshi Shimamoto <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Ingo Molnar <[e-mail]>

Documentation/scheduler/sched-design-CFS.txt

···
     idle timer scheduler in order to avoid to get into priority
     inversion problems which would deadlock the machine.
 
-SCHED_FIFO/_RR are implemented in sched_rt.c and are as specified by
+SCHED_FIFO/_RR are implemented in sched/rt.c and are as specified by
 POSIX.
 
 The command chrt from util-linux-ng 2.13.1.1 can set all of these except
···
 encapsulate scheduling policy details and are handled by the scheduler core
 without the core code assuming too much about them.
 
-sched_fair.c implements the CFS scheduler described above.
+sched/fair.c implements the CFS scheduler described above.
 
-sched_rt.c implements SCHED_FIFO and SCHED_RR semantics, in a simpler way than
+sched/rt.c implements SCHED_FIFO and SCHED_RR semantics, in a simpler way than
 the previous vanilla scheduler did.  It uses 100 runqueues (for all 100 RT
 priority levels, instead of 140 in the previous scheduler) and it needs no
 expired array.

include/linux/sched.h

···
  */
 extern unsigned long long notrace sched_clock(void);
 /*
- * See the comment in kernel/sched_clock.c
+ * See the comment in kernel/sched/clock.c
  */
 extern u64 cpu_clock(int cpu);
 extern u64 local_clock(void);

kernel/sched/idle_task.c

···
  * idle-task scheduling class.
  *
  * (NOTE: these are not related to SCHED_IDLE tasks which are
- *  handled in sched_fair.c)
+ *  handled in sched/fair.c)
  */
 
 #ifdef CONFIG_SMP