On Thu, 5 Jul 2018 16:13:40 -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. With this series, a --per-thread -less invocation looks like it succeeds (instead of giving a "failed to mmap with 12 (Cannot allocate memory)" error): # perf record -e /cs_etm/@20010000.etf/ sleep 1 [ perf record: Woken up 3 times to write data ] Warning: AUX data lost 2 times out of 3! [ perf record: Captured and wrote 0.182 MB perf.data ] # but now perf report - built with libopencsd - is unable to process the perf.data file: # perf report --stdio 0x3a0 [0x60]: failed to process type: 1 Error: failed to process sample # To display the perf.data header info, please use --header/--header-only options. # Also, a "record -a" invocation also acts like it's working, but Juno has a hardware limitation where it can't record all cpus concurrently, right? So, shouldn't record commands that exceed the h/w's capabilities error out instead? Thanks, Kim
