Hi Mathieu, I am enabling etmv4 coresight over one Cortex-A7 soc, using 32bit kernel. And I am following [1] to do experiment regarding the addr_range feature. The default addr_range is set as _stext~_etext, and it works fine with etb as sink, and etm as source. I could see there are valid kernel addresses using OpenCSD.
But while I try to store one small range of address pair, which contain only one kernel function. It doesn't behavior like what said in [1], the write pointer would grows rapidly with the read pointer. And I dump the etb buffer and parse it with openCSD, finding that there is no I_ASYNC packet in the dump and is fulled with I_NOT_SYNC. So my question is why ETB continue to grow when there is no trigger at all? Is it normal? I could provide more info if you need it. [1]: https://wiki.linaro.org/WorklingGroups/Kernel/Coresight/traceDecodingWithDS5 Thanks, Lei
