cvs commit: src/sys/kern init_main.c kern_thread.c
attilio at freebsd.org
Wed Mar 28 14:24:41 UTC 2007
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:
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.
Peace can only be achieved by understanding - A. Einstein
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