On Wed May 22, 2024 at 5:58 PM EEST, Vitor Soares wrote: > I did run with ftrace, but need some more time to go through it. > > Here the step I did: > kernel config: > CONFIG_FUNCTION_TRACER > CONFIG_FUNCTION_GRAPH_TRACER > > ftrace: > # set filters > echo tpm* > set_ftrace_filter > > # set tracer > echo function_graph > current_tracer > > # take the sample > echo 1 > tracing_on; time modprobe tpm_tis_spi; echo 0 > tracing_on > > regards, > Vitor Soares I'm now compiling distro kernel (OpenSUSE) for NUC7 with v6.10 contents. After I have that setup, I'll develop a perf test either with perf or bpftrace. I'll come back with the possible CONFIG_* that should be in place in your kernel. Might take up until next week as I have some conference stuff to prepare but I try to have stuff ready early next week. No need to rush with this as long as possible patches go to rc2 or rc3. Let's do a proper analysis instead. In the meantime you could check if you get perf and/or bpftrace to your image that use to boot up your device. Preferably both but please inform about this. Fair enough? BR, Jarkko
