Hi Andrea,
On Wed, Mar 04, 2020 at 03:45:59PM +0000, Andrea Brunato wrote:
Thank you Mike - I'm getting a way better understanding of the whole system.
Sorry for sharing a wrong command, unfortunately on 5.5.0-rc7 I see the same error persisting when running:
$ perf record --per-thread -e cs_etm/@tmc_etr0/u -- ls failed to set sink "" on event cs_etm/@tmc_etr0/u with 21 (Is a directory)
I'm using perf built as an Arm binary against the same kernel source code while linked against openCSD.
Just want to remind, please check if these two patches [1][2] have been merged into your local code base, otherwise, before we found the regression for inputting sink name in perf command.
Thanks, Leo
[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... [2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...