svn commit: r196226 - in head/sys: kern sys
attilio at freebsd.org
Sat Aug 15 03:01:04 UTC 2009
2009/8/14 Bjoern A. Zeeb <bz at freebsd.org>:
> Author: bz
> Date: Fri Aug 14 21:46:54 2009
> New Revision: 196226
> URL: http://svn.freebsd.org/changeset/base/196226
> Add a new macro to test that a variable could be loaded atomically.
> Check that the given variable is at most uintptr_t in size and that
> it is aligned.
> Note: ASSERT_ATOMIC_LOAD() uses ALIGN() to check for adequate
> alignment -- however, the function of ALIGN() is to guarantee
> alignment, and therefore may lead to stronger alignment
> enforcement than necessary for types that are smaller than
> Add checks to mtx, rw and sx locks init functions to detect possible
> breakage. This was used during debugging of the problem fixed with
> r196118 where a pointer was on an un-aligned address in the dpcpu area.
> In collaboration with: rwatson
> Reviewed by: rwatson
> Approved by: re (kib)
I think you should cover the lockmgr case too.
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