On Tue, 11 May 2010 02:11:41 -0400 Mike Frysinger <vapier.adi@xxxxxxxxx> wrote: > > __ __ __ __unsigned __ __ __ __ __ __ __ __pending:1; __ __ __/* P: lock */ > > + > > + __ __ __ /* > > + __ __ __ __* DMA (thus cache coherency maintenance) requires the > > + __ __ __ __* transfer buffers to live in their own cache lines. > > + __ __ __ __*/ > > + __ __ __ u16 conversion_data[AD7877_NR_SENSE] ____cacheline_aligned; > > __}; (^^stupid gmail) > i'm not sure this is correct. the cached_aligned attribute makes sure > it starts on a cache boundary, but it doesnt make sure it pads out to > one. so it might work more of the time, but i dont think it's > guaranteed. yup. You'd need to put something like int pad ____cacheline_aligned; _after_ the trashable field. Then look at the .s file and make sure it came out right ;) -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
