Re: [PATCH] tracing: Cleanup the convoluted softirq tracepoints

[H. Peter Anvin]

On 10/20/2010 08:27 AM, Jason Baron wrote:
> 
> sure. The idea of the 'jmp 0' was simply to be an lcd for x86, if
> there's a better lcd for x86, I'll update it. But note, that since the
> 'jmp 0' is patched to a better nop at boot, we wouldn't see much gain.
> And in the boot path we are using 'text_poke_early()', so avoiding that
> isn't going to improve things much.
> 

It's still a completely unnecessary waste of startup time some
potentially significant fraction of the time.  Startup time matters,
especially as the number of tracepoints grow.

	-hpa
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/