Em Mon, May 30, 2016 at 01:19:42PM -0300, Arnaldo Carvalho de Melo escreveu: > 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.
The kernel patches are in tip/perf/core now, so I applied the patches and they seem to work, but they broke one 'perf test' entry: # perf test 5 5: parse events tests : FAILED! # perf test -v 5 <SNIP> running test 50 '4:0x6530160/name=numpmu/' running test 51 'L1-dcache-misses/name=cachepmu/' running test 0 'cpu/config=10,config1,config2=3,period=1000/u' running test 1 'cpu/config=1,name=krava/u,cpu/config=2/u' running test 2 'cpu/config=1,call-graph=fp,time,period=100000/,cpu/config=2,call-graph=no,time=0,period=2000/' Invalid sysfs entry event=topdown-recovery-bubbles.scale failed to parse event 'cpu/event=topdown-recovery-bubbles.scale/u', err 1 test child finished with 1 ---- end ---- parse events tests: FAILED! # Please check that, - Arnaldo
