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    SubjectRe: [PATCH RFC 01/10] rcu: Make CONFIG_SRCU unconditionally enabled
    On Wed, Aug 08, 2018 at 01:17:44PM +0300, Kirill Tkhai wrote:
    > On 08.08.2018 10:20, Michal Hocko wrote:
    > > On Tue 07-08-18 18:37:36, Kirill Tkhai wrote:
    > >> This patch kills all CONFIG_SRCU defines and
    > >> the code under !CONFIG_SRCU.
    > >
    > > The last time somebody tried to do this there was a pushback due to
    > > kernel tinyfication. So this should really give some numbers about the
    > > code size increase. Also why can't we make this depend on MMU. Is
    > > anybody else than the reclaim asking for unconditional SRCU usage?
    >
    > I don't know one. The size numbers (sparc64) are:
    >
    > $ size image.srcu.disabled
    > text data bss dec hex filename
    > 5117546 8030506 1968104 15116156 e6a77c image.srcu.disabled
    > $ size image.srcu.enabled
    > text data bss dec hex filename
    > 5126175 8064346 1968104 15158625 e74d61 image.srcu.enabled
    > The difference is: 15158625-15116156 = 42469 ~41Kb

    41k is a *substantial* size increase. However, can you compare
    tinyconfig with and without this patch? That may have a smaller change.

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