sched, cleanup, treewide: Remove set_current_state(TASK_RUNNING) after schedule()

schedule(), io_schedule() and schedule_timeout() always return
with TASK_RUNNING state set, so one more setting is unnecessary.

(All places in patch are visible good, only exception is
 kiblnd_scheduler() from:

      drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c

 Its schedule() is one line above standard 3 lines of unified diff)

No places where set_current_state() is used for mb().

Signed-off-by: Kirill Tkhai <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Link: http://lkml.kernel.org/r/1410529254.3569.23.camel@tkhai
Cc: Alasdair Kergon <[email protected]>
Cc: Anil Belur <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Dave Kleikamp <[email protected]>
Cc: David Airlie <[email protected]>
Cc: David Howells <[email protected]>
Cc: Dmitry Eremin <[email protected]>
Cc: Frank Blaschka <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: Helge Deller <[email protected]>
Cc: Isaac Huang <[email protected]>
Cc: James E.J. Bottomley <[email protected]>
Cc: James E.J. Bottomley <[email protected]>
Cc: J. Bruce Fields <[email protected]>
Cc: Jeff Dike <[email protected]>
Cc: Jesper Nilsson <[email protected]>
Cc: Jiri Slaby <[email protected]>
Cc: Laura Abbott <[email protected]>
Cc: Liang Zhen <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Martin Schwidefsky <[email protected]>
Cc: Masaru Nomura <[email protected]>
Cc: Michael Opdenacker <[email protected]>
Cc: Mikael Starvik <[email protected]>
Cc: Mike Snitzer <[email protected]>
Cc: Neil Brown <[email protected]>
Cc: Oleg Drokin <[email protected]>
Cc: Peng Tao <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: Robert Love <[email protected]>
Cc: Steven Rostedt <[email protected]>
Cc: Trond Myklebust <[email protected]>
Cc: Ursula Braun <[email protected]>
Cc: Zi Shen Lim <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Ingo Molnar <[email protected]>

drivers/parisc/power.c

@@ -121,7 +121,6 @@ static int kpowerswd(void *param)
 		unsigned long soft_power_reg = (unsigned long) param;
 
 		schedule_timeout_interruptible(pwrsw_enabled ? HZ : HZ/POWERSWITCH_POLL_PER_SEC);
-		__set_current_state(TASK_RUNNING);
 
 		if (unlikely(!pwrsw_enabled))
 			continue;