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authorPranith Kumar <bobby.prani@gmail.com>2014-12-05 17:24:45 +0100
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2015-01-06 20:04:29 +0100
commit83fe27ea531161a655f02dc7732d14cfaa27fd5d (patch)
tree1f81714c3b10b76f483eea380b0eafe7cf84e75b /fs/quota
parentrcu: Combine DEFINE_SRCU() and DEFINE_STATIC_SRCU() (diff)
downloadlinux-83fe27ea531161a655f02dc7732d14cfaa27fd5d.tar.xz
linux-83fe27ea531161a655f02dc7732d14cfaa27fd5d.zip
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. ]
Diffstat (limited to 'fs/quota')
-rw-r--r--fs/quota/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/quota/Kconfig b/fs/quota/Kconfig
index c51df1dd237e..4a09975aac90 100644
--- a/fs/quota/Kconfig
+++ b/fs/quota/Kconfig
@@ -5,6 +5,7 @@
config QUOTA
bool "Quota support"
select QUOTACTL
+ select SRCU
help
If you say Y here, you will be able to set per user limits for disk
usage (also called disk quotas). Currently, it works for the