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]))
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