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

   1 # perf script event handlers, generated by perf script -g python
   2 # (c) 2010, Tom Zanussi <[email protected]>
   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 import os
  11 import sys
  12
  13 sys.path.append(os.environ['PERF_EXEC_PATH'] + \
  14         '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
  15
  16 from Core import *
  17 from perf_trace_context import *
  18
  19 unhandled = autodict()
  20
  21 def trace_begin():
  22         print "trace_begin"
  23         pass
  24
  25 def trace_end():
  26         print_unhandled()
  27
  28 def irq__softirq_entry(event_name, context, common_cpu,
  29                        common_secs, common_nsecs, common_pid, common_comm,
  30                        common_callchain, vec):
  31         print_header(event_name, common_cpu, common_secs, common_nsecs,
  32                 common_pid, common_comm)
  33
  34         print_uncommon(context)
  35
  36         print "vec=%s\n" % (symbol_str("irq__softirq_entry", "vec", vec)),
  37
  38 def kmem__kmalloc(event_name, context, common_cpu,
  39                   common_secs, common_nsecs, common_pid, common_comm,
  40                   common_callchain, call_site, ptr, bytes_req, bytes_alloc,
  41                   gfp_flags):
  42         print_header(event_name, common_cpu, common_secs, common_nsecs,
  43                 common_pid, common_comm)
  44
  45         print_uncommon(context)
  46
  47         print "call_site=%u, ptr=%u, bytes_req=%u, " \
  48                 "bytes_alloc=%u, gfp_flags=%s\n" % \
  49                 (call_site, ptr, bytes_req, bytes_alloc,
  50                 flag_str("kmem__kmalloc", "gfp_flags", gfp_flags)),
  51
  52 def trace_unhandled(event_name, context, event_fields_dict):
  53         try:
  54                 unhandled[event_name] += 1
  55         except TypeError:
  56                 unhandled[event_name] = 1
  57
  58 def print_header(event_name, cpu, secs, nsecs, pid, comm):
  59         print "%-20s %5u %05u.%09u %8u %-20s " % \
  60                 (event_name, cpu, secs, nsecs, pid, comm),
  61
  62 # print trace fields not included in handler args
  63 def print_uncommon(context):
  64         print "common_preempt_count=%d, common_flags=%s, " \
  65                 "common_lock_depth=%d, " % \
  66                 (common_pc(context), trace_flag_str(common_flags(context)),
  67                 common_lock_depth(context))
  68
  69 def print_unhandled():
  70         keys = unhandled.keys()
  71         if not keys:
  72                 return
  73
  74         print "\nunhandled events:\n\n",
  75
  76         print "%-40s  %10s\n" % ("event", "count"),
  77         print "%-40s  %10s\n" % ("----------------------------------------", \
  78                                 "-----------"),
  79
  80         for event_name in keys:
  81                 print "%-40s  %10d\n" % (event_name, unhandled[event_name])