On Thu, 26 Jun 2014 09:58:31 -0400 Steven Rostedt <rost...@goodmis.org> wrote:
> What we can do is force ring_buffer_swap_cpu() to only work for the CPU > that it is on. As we have snapshot in per_cpu buffers, to make that > work, we will need to change the per_cpu version of snapshot to do a > smp_call_function_single() to the CPU that it wants to take a snapshot > of, and run the swap there. > > To force this, we can remove the cpu parameter from the > ring_buffer_swap_cpu(). By doing this, we may be able to remove some of > the CONFIG_RING_BUFFER_ALLOW_SWAP hacks too! > > I'm not going to sacrifice the general performance of the ring buffer > for a feature that is seldom (if ever) used. Did you want to do the above, or do you want me to write something up? -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
