Re: [Xen-devel] [PATCH] Xen/atomic: use static inlines instead of macros

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 21.02.14 at 21:41, Andrew Cooper <andrew.cooper3@xxxxxxxxxx> wrote:
> This is some coverity-inspired tidying.
> 
> Coverity has some grief analysing the call sites of atomic_read().  This is
> believed to be a bug in Coverity itself when expanding the nested macros, 
> but
> there is no legitimate reason for it to be a macro in the first place.
> 
> This patch changes {,_}atomic_{read,set}() from being macros to being static
> inline functions, thus gaining some type safety.
> 
> One issue which is not immediatly obvious is that the non-atomic varients 
> take
> their atomic_t at a different level of indirection to the atomic varients.
> 
> This is not suitable for _atomic_set() (when used to initialise an atomic_t)
> which is converted to take its parameter as a pointer.  One callsite of
> _atomic_set() is updated, while the other two callsites are updated to
> ATOMIC_INIT().

Did you consider leaving these "non-atomic atomic ops" untouched
(as they don't involve macro nesting), altering only the "real" ones?

Jan


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