1 # perf script event handlers, generated by perf script -g python 2 # (c) 2010, Tom Zanussi <tzanussi (at] 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 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 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" % \ 37 (symbol_str("irq__softirq_entry", "vec", vec)), 38 39 def kmem__kmalloc(event_name, context, common_cpu, 40 common_secs, common_nsecs, common_pid, common_comm, 41 call_site, ptr, bytes_req, bytes_alloc, 42 gfp_flags): 43 print_header(event_name, common_cpu, common_secs, common_nsecs, 44 common_pid, common_comm) 45 46 print_uncommon(context) 47 48 print "call_site=%u, ptr=%u, bytes_req=%u, " \ 49 "bytes_alloc=%u, gfp_flags=%s\n" % \ 50 (call_site, ptr, bytes_req, bytes_alloc, 51 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 64 # print trace fields not included in handler args 65 def print_uncommon(context): 66 print "common_preempt_count=%d, common_flags=%s, common_lock_depth=%d, " \ 67 % (common_pc(context), trace_flag_str(common_flags(context)), \ 68 common_lock_depth(context)) 69 70 def print_unhandled(): 71 keys = unhandled.keys() 72 if not keys: 73 return 74 75 print "\nunhandled events:\n\n", 76 77 print "%-40s %10s\n" % ("event", "count"), 78 print "%-40s %10s\n" % ("----------------------------------------", \ 79 "-----------"), 80 81 for event_name in keys: 82 print "%-40s %10d\n" % (event_name, unhandled[event_name]) 83
