Hello, Christoph. On Fri, Aug 23, 2013 at 07:01:56PM +0000, Christoph Lameter wrote: > This patch converts __get_cpu_var into either and explicit address > calculation using this_cpu_ptr() or into a use of this_cpu > operations that use the offset. Thereby address calcualtions are > avoided and less registers are used when code is generated. Yeah, we should have done this long ago. Eventually, I think we'd be better off dropping all _var() accessors. They were okay when we had segration between static and dynamic ones but are now just adding to confusion. On a cursory scan, * Each patch probably needs a brief explanation of why this is happening, especially if these patches are gonna be routed separately. * It would be a lot easier to route the patches if each had cc's to the maintainers of the affected subsystems. * Dunno what's the convention around conccinelle scripts but do we need to keep them around if the accessor being converted gets removed at the end of the series? How do you want to route the patches? I'm gonna apply the second patch which updates __verify_pcpu_ptr() to the percpu tree right away and push it to Linus early during the merge window so that pushing other patches through different trees from there on isn't too painful. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
