On Wed, 18 Jul 2018 15:48:00 -0600 Mathieu Poirier <[email protected]> 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. 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) $ Thanks, Kim
