Hi, I am seeing some crashes in iwlwifi, wanting to capture more info to debug it. So like outlined here, https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi/debugging I'm trying to enable / run trace-cmd. I added it to my build, but when I try to execute it, root@OpenWrt:/# trace-cmd reco…

now building my own - will keep you updated on progress —- update —— first kernel is too big with ftrace configured. Need to trim size. Looking to see what can be cut. —- update 2 —— trace-cmd on driver working... Just needed to enable (in .config through make menuconfig) CONFIG_KERNEL_FTRACE=y…

[SOLVED] Trace-cmd, missing tracing_on

For Developers

fodiator October 4, 2022, 8:16pm 4

Seems EVENT_TRACING may no longer be current. Likely this is now all in ftrace. Description of set up is here, including finding that kernel size needs to be < 4 MiB (at least for Xiaomi device):