linux-stable/kernel/power
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
..
autosleep.c PM / Sleep: avoid 'autosleep' in shutdown progress 2013-07-15 01:31:37 +02:00
block_io.c block: Abstract out bvec iterator 2013-11-23 22:33:47 -08:00
console.c arm, pm, vmpressure: add missing slab.h includes 2014-02-03 13:24:01 -05:00
hibernate.c PM / Hibernate: Migrate to ktime_t 2014-11-03 01:02:55 +01:00
Kconfig rcu: Make SRCU optional by using CONFIG_SRCU 2015-01-06 11:04:29 -08:00
main.c Merge branches 'pm-apm' and 'pm-sleep' 2014-07-27 23:56:30 +02:00
Makefile PM / Sleep: Add user space interface for manipulating wakeup sources, v3 2012-05-01 21:26:05 +02:00
power.h PM / Hibernate: Migrate to ktime_t 2014-11-03 01:02:55 +01:00
poweroff.c power/sysrq: fix inconstistent help message of sysrq key 2013-04-30 17:04:10 -07:00
process.c PM / freezer: Clean up code after recent fixes 2014-10-22 22:47:32 +02:00
qos.c PM / QoS: Add PM_QOS_MEMORY_BANDWIDTH class 2014-09-25 01:18:33 +02:00
snapshot.c PM / Hibernate: Migrate to ktime_t 2014-11-03 01:02:55 +01:00
suspend.c PM / sleep: Fix entering suspend-to-IDLE if no freeze_oops is set 2014-11-08 22:30:05 +01:00
suspend_test.c PM / sleep: Enhance test_suspend option with repeat capability 2014-09-09 01:48:02 +02:00
swap.c PM / hibernate: Deletion of an unnecessary check before the function call "vfree" 2014-11-18 02:49:40 +01:00
user.c PM / hibernate: introduce "nohibernate" boot parameter 2014-06-16 23:29:39 +02:00
wakelock.c PM / wakeup: Include appropriate header file in kernel/power/wakelock.c 2014-03-01 01:02:09 +01:00