On Mon, May 16, 2011 at 10:51:10PM +0100, Ben Dooks wrote: > On Mon, May 16, 2011 at 03:46:08PM -0600, Grant Likely wrote: > > + > > + /* > > + * DMA buffer, with padding to give it its own cache line so that > > + * the DMA streaming works on non-coherent architectures. > > + * Question: Is this the proper pattern, and is this really necessary? > > + */ > > + uint8_t pad1[L1_CACHE_BYTES]; > > + uint8_t buf[6]; > > + uint8_t pad2[L1_CACHE_BYTES]; > > +}; > > I think there's an attribute to do this, starting with an __ defined > in the kernel. > Yes, it is called "____cacheline_aligned". -- Dmitry -- 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
