linux/arch/s390
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
..
appldata s390: appldata: drop owner assignment from platform_drivers 2014-10-20 16:20:13 +02:00
boot s390/boot: fix boot of compressed kernel built with gcc 4.9 2014-05-27 10:26:04 +02:00
configs s390: update default configuration 2014-10-27 13:27:03 +01:00
crypto crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
hypfs assorted conversions to %p[dD] 2014-11-19 13:01:20 -05:00
include 3.19 changes for KVM: 2014-12-18 16:05:28 -08:00
kernel Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2014-12-17 12:31:40 -08:00
kvm rcu: Make SRCU optional by using CONFIG_SRCU 2015-01-06 11:04:29 -08:00
lib s390/uprobes: fix kprobes dependency 2014-10-17 14:45:51 +02:00
math-emu s390: fix save and restore of the floating-point-control register 2013-10-24 17:17:11 +02:00
mm 3.19 changes for KVM: 2014-12-18 16:05:28 -08:00
net net: filter: constify detection of pkt_type_offset 2014-09-13 17:07:21 -04:00
oprofile s390: Replace __get_cpu_var uses 2014-08-26 13:45:52 -04:00
pci Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2014-12-11 17:30:55 -08:00
defconfig s390: update default configuration 2014-10-27 13:27:03 +01:00
Kbuild s390/pci: base support 2012-11-30 15:40:45 +01:00
Kconfig gcov: enable GCOV_PROFILE_ALL from ARCH Kconfigs 2014-12-13 12:42:51 -08:00
Kconfig.debug Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS 2013-04-30 17:04:09 -07:00
Makefile s390: pass march flag to assembly files as well 2014-09-09 08:53:28 +02:00