svn commit: r291171 - in head/sys: amd64/amd64 compat/ia32 i386/i386 kern sys

[Konstantin Belousov]

On Thu, Dec 10, 2015 at 10:18:19PM +0100, Oliver Pinter wrote:
> On Mon, Nov 23, 2015 at 8:09 AM, Konstantin Belousov <kib at freebsd.org> wrote:
> > Author: kib
> > Date: Mon Nov 23 07:09:35 2015
> > New Revision: 291171
> > URL: https://svnweb.freebsd.org/changeset/base/291171
> >
> > Log:
> >   Split kerne timekeep ABI structure vdso_sv_tk out of the struct
> >   sysentvec.  This allows the timekeep data to be shared between similar
> >   ABIs which cannot share sysentvec.
> >
> >   Make the timekeep_push_vdso() tick callback to the timekeep structures
> >   instead of sysentvecs.  If several sysentvec share the vdso_sv_tk
> >   structure, we would update the userspace data several times on each
> >   tick, without the change.
> >
> >   Only allocate vdso_sv_tk in the exec_sysvec_init() sysinit when
> >   sysentvec is marked with the new SV_TIMEKEEP flag.  This saves
> >   allocation and update of unneeded vdso_sv_tk for ABIs which do not
> >   provide userspace gettimeofday yet, which are PowerPCs arches right
> >   now.
> >
> >   Make vdso_sv_tk allocator public, namely split out and export
> >   alloc_sv_tk() and alloc_sv_tk_compat32().  ABIs which share timekeep
> >   data now can allocate it manually and share as appropriate.
> >
> >   Requested by: nwhitehorn
> >   Tested by:    nwhitehorn, pho
> >   Sponsored by: The FreeBSD Foundation
> >   MFC after:    2 weeks
> 
> Hello Konstantin!
> 
> Do you plan to MFC back this changes to 10-STABLE in these days?

I decided to not merge the change.