linux/arch/s390/kvm
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
..
diag.c KVM: s390/cmm: Fix prefix handling for diag 10 balloon 2014-09-10 12:19:42 +02:00
gaccess.c kernel: Provide READ_ONCE and ASSIGN_ONCE 2014-12-20 16:48:59 -08:00
gaccess.h KVM: s390: Enable DAT support for TPROT handler 2014-05-30 09:39:36 +02:00
guestdbg.c KVM: s390: return -EFAULT if copy_from_user() fails 2014-05-06 14:57:59 +02:00
intercept.c KVM: s390: handle pending local interrupts via bitmap 2014-11-28 13:59:04 +01:00
interrupt.c KVM: s390: clean up return code handling in irq delivery code 2014-12-04 16:39:00 +01:00
irq.h KVM: s390: irq routing for adapter interrupts. 2014-03-21 13:43:00 +01:00
Kconfig rcu: Make SRCU optional by using CONFIG_SRCU 2015-01-06 11:04:29 -08:00
kvm-s390.c 3.19 changes for KVM: 2014-12-18 16:05:28 -08:00
kvm-s390.h KVM: s390: handle pending local interrupts via bitmap 2014-11-28 13:59:04 +01:00
Makefile KVM: s390: hardware support for guest debugging 2014-04-22 13:24:51 +02:00
priv.c 3.19 changes for KVM: 2014-12-18 16:05:28 -08:00
sigp.c KVM: s390: handle pending local interrupts via bitmap 2014-11-28 13:59:04 +01:00
trace-s390.h KVM: s390: enable IBS for single running VCPUs 2014-04-29 15:01:54 +02:00
trace.h KVM: s390: interpretive execution of SIGP EXTERNAL CALL 2014-05-16 14:57:28 +02:00