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 10from __future__ import print_function 11 12import os 13import sys 14 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 pass 26 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] += 1 57 except TypeError: 58 unhandled[event_name] = 1 59 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 args 66def 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 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])) 85