Hi Arnaldo, Thank you for your reply. I actually meant tracepoint event handlers: def trace_unhandled(event_name, context, event_fields_dict) The dict parameter contains an attribute "common_pid" which is actually the "tid" of the thread. There are no other attributes that contain the actual pid of the process. So, I was wondering if this is something intentional? If not I can share a patch to fix this.
Best, - Arun On Sat, Jul 1, 2017 at 7:47 AM, Arnaldo Carvalho de Melo <[email protected]> wrote: > Em Fri, Jun 30, 2017 at 03:40:57PM -0700, Arun Kalyanasundaram escreveu: >> The handlers in the python script generated from "perf script" have an >> attribute: common_pid. This attribute contains the tid of the process >> instead of its pid. I would like to know if this is the expected behavior. >> There are no other attributes in the Python handler that provide the pid >> and knowing the process id is useful to be able to group all samples that >> belong to the same process that generated different threads. > > Humm, you have: > > def process_event(param_dict): > event_attr = param_dict["attr"] > sample = param_dict["sample"] > raw_buf = param_dict["raw_buf"] > comm = param_dict["comm"] > name = param_dict["ev_name"] > > And then, on sample you have (from a recent python script for processing > Intel PT samples): > > def print_common_start(comm, sample, name): > ts = sample["time"] > cpu = sample["cpu"] > pid = sample["pid"] > tid = sample["tid"] > print "%16s %5u/%-5u [%03u] %9u.%09u %7s:" % (comm, pid, tid, cpu, ts > / 1000000000, ts %1000000000, name), > > - Arnaldo
