alistair23-linux/drivers/devfreq
Pranith Kumar 83fe27ea53 rcu: Make SRCU optional by using CONFIG_SRCU
SRCU is not necessary to be compiled by default in all cases. For tinification
efforts not compiling SRCU unless necessary is desirable.

The current patch tries to make compiling SRCU optional by introducing a new
Kconfig option CONFIG_SRCU which is selected when any of the components making
use of SRCU are selected.

If we do not select CONFIG_SRCU, srcu.o will not be compiled at all.

   text    data     bss     dec     hex filename
   2007       0       0    2007     7d7 kernel/rcu/srcu.o

Size of arch/powerpc/boot/zImage changes from

   text    data     bss     dec     hex filename
 831552   64180   23944  919676   e087c arch/powerpc/boot/zImage : before
 829504   64180   23952  917636   e0084 arch/powerpc/boot/zImage : after

so the savings are about ~2000 bytes.

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
CC: Josh Triplett <josh@joshtriplett.org>
CC: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
[ paulmck: resolve conflict due to removal of arch/ia64/kvm/Kconfig. ]
2015-01-06 11:04:29 -08:00
..
exynos devfreq: exynos: drop owner assignment from platform_drivers 2014-10-20 16:20:27 +02:00
devfreq.c PM / devfreq: Export helper functions for drivers 2014-09-29 20:22:22 +09:00
governor.h PM / devfreq: provide hooks for governors to be registered 2012-11-20 18:46:12 +09:00
governor_performance.c PM / devfreq: governors: add GPL module license and allow module build 2012-11-20 18:46:23 +09:00
governor_powersave.c PM / devfreq: governors: add GPL module license and allow module build 2012-11-20 18:46:23 +09:00
governor_simpleondemand.c PM / devfreq: governors: add GPL module license and allow module build 2012-11-20 18:46:23 +09:00
governor_userspace.c PM / devfreq: governors: add GPL module license and allow module build 2012-11-20 18:46:23 +09:00
Kconfig rcu: Make SRCU optional by using CONFIG_SRCU 2015-01-06 11:04:29 -08:00
Makefile PM / devfreq: Add Exynos5-bus devfreq driver for Exynos5250 2013-06-03 20:20:29 +09:00