cvs commit: src/sys/kern init_main.c kern_thread.c

[Attilio Rao]

2007/3/27, Attilio Rao <attilio at freebsd.org>:
> 2007/3/27, John Baldwin <jhb at freebsd.org>:
> > jhb         2007-03-27 16:51:34 UTC
> >
> >  FreeBSD src repository
> >
> >  Modified files:
> >    sys/kern             init_main.c kern_thread.c
> >  Log:
> >  Align 'struct thread' on 16 byte boundaries so that the lower 4 bits are
> >  always 0.  Previously we aligned threads on a minimum of 8-byte boundaries.
> >
> >  Note: This changes the uma zone to no longer cache align threads.  We
> >  really want the uma zone to do align threads to MAX(16, cache line size)
> >  but there currently isn't a good way to express that to uma.
>
> We can workaround it using a function like:
> int uma_get_align(void)
> (which would be the counter part of uma_set_align).
> Its implementations is trivial.

I have a diff for that:
http://users.gufi.org/~rookie/works/patches/uma2.diff

I had no time to sync my branches with last HEAD changes, so I can't
fix uma_zcreate() call... just adding the uma_get_align() function.

Thanks,
Attilio


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