On 19/07/2024 10:26 am, Ganapatrao Kulkarni wrote:

To generate the instruction tracing, script uses 2 contiguous packets address range. If there a continuity brake due to discontiguous branch address, it is required to reset the tracing and start tracing with the new set of contiguous packets.

Adding change to identify the break and complete the remaining tracing of current packets and restart tracing from new set of packets, if continuity is established.

Hi Ganapatrao,

Can you add a before and after example of what's changed to the commit message? It wasn't immediately obvious to me if this is adding missing output, or it was correcting the tail end of the output that was previously wrong.

Signed-off-by: Ganapatrao Kulkarni gankulkarni@os.amperecomputing.com

tools/perf/scripts/python/arm-cs-trace-disasm.py | 10 ++++++++++ 1 file changed, 10 insertions(+)

diff --git a/tools/perf/scripts/python/arm-cs-trace-disasm.py b/tools/perf/scripts/python/arm-cs-trace-disasm.py index d973c2baed1c..ad10cee2c35e 100755 --- a/tools/perf/scripts/python/arm-cs-trace-disasm.py +++ b/tools/perf/scripts/python/arm-cs-trace-disasm.py @@ -198,6 +198,10 @@ def process_event(param_dict): cpu_data[str(cpu) + 'addr'] = addr return

• if (cpu_data.get(str(cpu) + 'ip') == None):

• cpu_data[str(cpu) + 'ip'] = ip
  

Do you need to write into the global cpu_data here? Doesn't it get overwritten after you load it back into 'prev_ip'

prev_ip = cpu_data[str(cpu) + 'ip']

... then ...

# Record for previous sample packet cpu_data[str(cpu) + 'addr'] = addr cpu_data[str(cpu) + 'ip'] = stop_addr

Would a local variable not accomplish the same thing?

• prev_ip = cpu_data[str(cpu) + 'ip']

if (options.verbose == True): print("Event type: %s" % name) @@ -243,12 +247,18 @@ def process_event(param_dict): # Record for previous sample packet cpu_data[str(cpu) + 'addr'] = addr

• cpu_data[str(cpu) + 'ip'] = stop_addr

# Handle CS_ETM_TRACE_ON packet if start_addr=0 and stop_addr=4 if (start_addr == 0 and stop_addr == 4): print("CPU%d: CS_ETM_TRACE_ON packet is inserted" % cpu) return

• if (stop_addr < start_addr):

• # Continuity of the Packets broken, set start_addr to previous
  

• # packet ip to complete the remaining tracing of the address range.
  

• start_addr = prev_ip
  

• if (start_addr < int(dso_start) or start_addr > int(dso_end)): print("Start address 0x%x is out of range [ 0x%x .. 0x%x ] for dso %s" % (start_addr, int(dso_start), int(dso_end), dso)) return