Re: [PATCH v3 0/7] perf: cs-etm: Coresight decode and disassembly improvements

From: James Clark
Date: Fri Sep 20 2024 - 04:14:27 EST




On 18/09/2024 12:23 pm, Ganapatrao Kulkarni wrote:

Hi James,

On 16-09-2024 07:27 pm, James Clark wrote:
A set of changes that came out of the issues reported here [1].

  * First 2 patches fix a decode bug in Perf and add support for new
    consistency checks in OpenCSD
  * The remaining ones make the disassembly script easier to test
    and use. This also involves adding a new Python binding to
    Perf to get a config value (perf_config_get())

[1]: https://lore.kernel.org/linux-arm-kernel/20240719092619.274730-1-gankulkarni@xxxxxxxxxxxxxxxxxxxxxx/


Tried this series with below commands and issue is not seen as reported in [1].

record:
timeout 8s ./perf record -e cs_etm// -C 1 -o kcore --kcore dd if=/dev/zero of=/dev/null

decode:
./perf script -i ./kcore -s scripts/python/arm-cs-trace-disasm.py -- -d objdump -k kcore/kcore_dir/kcore

./perf script -i ./kcore -s scripts/python/arm-cs-trace-disasm.py -F cpu,event,ip,addr,sym -- -d objdump -k kcore/kcore_dir/kcore

Feel free to add for 1/7 and 2/7.
Tested-by: Ganapatrao Kulkarni <gankulkarni@xxxxxxxxxxxxxxxxxxxxxx>


Thanks for testing!