85 lines · python
1# perf script event handlers, generated by perf script -g python2# (c) 2010, Tom Zanussi <tzanussi@gmail.com>3# Licensed under the terms of the GNU GPL License version 24#5# This script tests basic functionality such as flag and symbol6# strings, common_xxx() calls back into perf, begin, end, unhandled7# events, etc. Basically, if this script runs successfully and8# displays expected results, Python scripting support should be ok.9 10from __future__ import print_function11 12import os13import sys14 15sys.path.append(os.environ['PERF_EXEC_PATH'] + \16 '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')17 18from Core import *19from perf_trace_context import *20 21unhandled = autodict()22 23def trace_begin():24 print("trace_begin")25 pass26 27def trace_end():28 print_unhandled()29 30def 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 40def 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 54def trace_unhandled(event_name, context, event_fields_dict):55 try:56 unhandled[event_name] += 157 except TypeError:58 unhandled[event_name] = 159 60def 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 args66def 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 72def print_unhandled():73 keys = unhandled.keys()74 if not keys:75 return76 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]))85