tools/perf/scripts/python/check-perf-trace.py

   1 # perf script event handlers, generated by perf script -g python
   2 # (c) 2010, Tom Zanussi <tzanussi@gmail.com>
   3 # Licensed under the terms of the GNU GPL License version 2
   4 #
   5 # This script tests basic functionality such as flag and symbol
   6 # strings, common_xxx() calls back into perf, begin, end, unhandled
   7 # events, etc.  Basically, if this script runs successfully and
   8 # displays expected results, Python scripting support should be ok.
   9
  10 from __future__ import print_function
  11
  12 import os
  13 import sys
  14
  15 sys.path.append(os.environ['PERF_EXEC_PATH'] + \
  16         '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
  17
  18 from Core import *
  19 from perf_trace_context import *
  20
  21 unhandled = autodict()
  22
  23 def trace_begin():
  24         print("trace_begin")
  25         pass
  26
  27 def trace_end():
  28         print_unhandled()
  29
  30 def irq__softirq_entry(event_name, context, common_cpu,
  31                        common_secs, common_nsecs, common_pid, common_comm,
  32                        common_callchain, vec):
  33         print_header(event_name, common_cpu, common_secs, common_nsecs,
  34                 common_pid, common_comm)
  35
  36         print_uncommon(context)
  37
  38         print("vec=%s" % (symbol_str("irq__softirq_entry", "vec", vec)))
  39
  40 def kmem__kmalloc(event_name, context, common_cpu,
  41                   common_secs, common_nsecs, common_pid, common_comm,
  42                   common_callchain, call_site, ptr, bytes_req, bytes_alloc,
  43                   gfp_flags):
  44         print_header(event_name, common_cpu, common_secs, common_nsecs,
  45                 common_pid, common_comm)
  46
  47         print_uncommon(context)
  48
  49         print("call_site=%u, ptr=%u, bytes_req=%u, "
  50                 "bytes_alloc=%u, gfp_flags=%s" %
  51                 (call_site, ptr, bytes_req, bytes_alloc,
  52                 flag_str("kmem__kmalloc", "gfp_flags", gfp_flags)))
  53
  54 def trace_unhandled(event_name, context, event_fields_dict):
  55         try:
  56                 unhandled[event_name] += 1
  57         except TypeError:
  58                 unhandled[event_name] = 1
  59
  60 def print_header(event_name, cpu, secs, nsecs, pid, comm):
  61         print("%-20s %5u %05u.%09u %8u %-20s " %
  62                 (event_name, cpu, secs, nsecs, pid, comm),
  63                 end=' ')
  64
  65 # print trace fields not included in handler args
  66 def print_uncommon(context):
  67         print("common_preempt_count=%d, common_flags=%s, "
  68                 "common_lock_depth=%d, " %
  69                 (common_pc(context), trace_flag_str(common_flags(context)),
  70                 common_lock_depth(context)))
  71
  72 def print_unhandled():
  73         keys = unhandled.keys()
  74         if not keys:
  75                 return
  76
  77         print("\nunhandled events:\n")
  78
  79         print("%-40s  %10s" % ("event", "count"))
  80         print("%-40s  %10s" % ("----------------------------------------",
  81                                 "-----------"))
  82
  83         for event_name in keys:
  84                 print("%-40s  %10d\n" % (event_name, unhandled[event_name]))