• Pranith Kumar's avatar
    rcu: Make SRCU optional by using CONFIG_SRCU · 83fe27ea
    Pranith Kumar authored
    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's avatarPranith 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: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
    [ paulmck: resolve conflict due to removal of arch/ia64/kvm/Kconfig. ]
    83fe27ea
Kconfig 148 Bytes