On Mon, 13 Aug 2018 at 11:46, Kim Phillips <kim.phillips@xxxxxxx> wrote: > > On Wed, 18 Jul 2018 15:48:00 -0600 > Mathieu Poirier <mathieu.poirier@xxxxxxxxxx> wrote: > > > This set adds the capability to communiate event specific configuration > > to the PMU kernel driver using an ioctl(). The functionatlity is made > > generic enough for anyone to use but is targeted at the identification > > of CoreSight sinks when operating in CPU-wide trace scenarios. > > > > --- > > Changes for V3: > > . Return an error for CPU-wide scenarios while the feature is being > > implemented (Kim) > > Hi, I'm giving this series a short test-drive on Juno. Hi, > > It yields success for the --per-thread case..: > > $ sudo taskset -c 0 ./perf record -e cs_etm/@20010000.etf/ --per-thread uname -a > Linux juno 4.18.0-rc8-00011-gb82af52c4b35-dirty #147 SMP PREEMPT Thu Aug 9 11:20:37 CDT 2018 aarch64 GNU/Linux > [ perf record: Woken up 0 times to write data ] > Warning: > AUX data lost 1 times out of 2! > > [ perf record: Captured and wrote 0.067 MB perf.data ] > $ > > ..but not for CPU-wide?: > > $ sudo taskset -c 0 ./perf record -e cs_etm/@20010000.etf/ uname -a > failed to mmap with 12 (Cannot allocate memory) > $ sudo taskset -c 0 ./perf record -e cs_etm/@20010000.etf/ -C 0 uname -a > failed to mmap with 12 (Cannot allocate memory) > $ This patchset is getting very old and a fair amount of things have changed since then. I'm hoping to be coming out with a new one shortly. Nonetheless the above is returning an error in CPU-wide scenarios while the feature is being implemented. Isn't what you requested or have I misunderstood your comment? > > Thanks, > > Kim
