Em Mon, Jun 06, 2016 at 11:54:58AM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Mon, Jun 06, 2016 at 11:51:48AM -0300, Arnaldo Carvalho de Melo escreveu:
> > But this gets us to the following error:
> >
> > [root@jouet ~]# perf test -v 5 2>&1 | tail
> > running test 49 'r1234/name=rawpmu/'
> > 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/'
> > failed to parse event
> > 'topdown-total-slots:u,cpu/event=topdown-total-slots/u', err 1
> > test child finished with 1
> > ---- end ----
> > parse events tests: FAILED!
> > [root@jouet ~]# cat /sys/devices/cpu/events/topdown-total-slots
> > event=0x3c,umask=0x0,any=1[root@jouet ~]#
> > [root@jouet ~]#
> > [root@jouet ~]# cat /sys/devices/cpu/events/bus-cycles
> > event=0x3c,umask=0x01
> > [root@jouet ~]#
> >
> > I.e seems to be bickering about a missing newline in the sysfs entry, will
> > check the parser...
>
> Maybe something else, as there are other files there without the newline
> and the code introducing the topdown events doesn't look to be
> problematic in this regard...
[root@jouet ~]# perf stat -e cpu/topdown-total-slots/ usleep 1
Performance counter stats for 'usleep 1':
1,756,310 cpu/topdown-total-slots/
0.000797426 seconds time elapsed
[root@jouet ~]# perf stat -e cpu/topdown-total-slots/u usleep 1
Performance counter stats for 'usleep 1':
606,770 cpu/topdown-total-slots/u
0.000728467 seconds time elapsed
[root@jouet ~]# perf stat -e cpu/event=topdown-total-slots/u usleep 1
Performance counter stats for 'usleep 1':
639,170 cpu/event=topdown-total-slots/u
0.000797547 seconds time elapsed
[root@jouet ~]#
Both work, i.e. unrestricted wrt kernel/user, user only (/u suffix),
like in the test, it is just when we try:
[root@jouet ~]# perf stat -e
topdown-total-slots:u,cpu/event=topdown-total-slots/u usleep 1
event syntax error: 'topdown-total-slots:u,cpu/event=topdown-total-slots/u'
\___ parser error
Run 'perf list' for a list of valid events
Usage: perf stat [<options>] [<command>]
-e, --event <event> event selector. use 'perf list' to list available
events
[root@jouet ~]#
that it fails, Jiri, probably something obvious to you? :-)
- Arnaldo
