Re: [PATCH 1/4] perf stat: Basic support for TopDown in perf stat

[Arnaldo Carvalho de Melo]

Em Mon, May 30, 2016 at 09:04:02AM -0700, Andi Kleen escreveu:
> > Which is a Broadwell-U, dual-core, 14 nm.
> > 
> > [root@jouet linux]# echo 0 > /proc/sys/kernel/nmi_watchdog
> > [root@jouet linux]# perf stat --topdown -a usleep 1
> > System does not support topdown
> > [root@jouet linux]# cat /proc/sys/kernel/nmi_watchdog
> > 0
> > [root@jouet linux]#
> > 
> > Please advise.
> 
> You don't have the kernel patches?
> 
> They're in PeterZ's tree, but not yet in tip
> https://git.kernel.org/cgit/linux/kernel/git/peterz/queue.git/log/?h=perf/core

oops, will try applying those patches, thanks for claryfing.

- Arnaldo