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# perf script event handlers, generated by perf script -g python
# (c) 2010, Tom Zanussi <tzanussi@gmail.com>
# Licensed under the terms of the GNU GPL License version 2
#
# This script tests basic functionality such as flag and symbol
# strings, common_xxx() calls back into perf, begin, end, unhandled
# events, etc. Basically, if this script runs successfully and
# displays expected results, Python scripting support should be ok.
from __future__ import print_function
import os
import sys
sys.path.append(os.environ['PERF_EXEC_PATH'] + \
'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
from Core import *
from perf_trace_context import *
unhandled = autodict()
def trace_begin():
print("trace_begin")
pass
def trace_end():
print_unhandled()
def irq__softirq_entry(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
common_callchain, vec):
print_header(event_name, common_cpu, common_secs, common_nsecs,
common_pid, common_comm)
print_uncommon(context)
print("vec=%s" % (symbol_str("irq__softirq_entry", "vec", vec)))
def kmem__kmalloc(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
common_callchain, call_site, ptr, bytes_req, bytes_alloc,
gfp_flags):
print_header(event_name, common_cpu, common_secs, common_nsecs,
common_pid, common_comm)
print_uncommon(context)
print("call_site=%u, ptr=%u, bytes_req=%u, "
"bytes_alloc=%u, gfp_flags=%s" %
(call_site, ptr, bytes_req, bytes_alloc,
flag_str("kmem__kmalloc", "gfp_flags", gfp_flags)))
def trace_unhandled(event_name, context, event_fields_dict):
try:
unhandled[event_name] += 1
except TypeError:
unhandled[event_name] = 1
def print_header(event_name, cpu, secs, nsecs, pid, comm):
print("%-20s %5u %05u.%09u %8u %-20s " %
(event_name, cpu, secs, nsecs, pid, comm),
end=' ')
# print trace fields not included in handler args
def print_uncommon(context):
print("common_preempt_count=%d, common_flags=%s, "
"common_lock_depth=%d, " %
(common_pc(context), trace_flag_str(common_flags(context)),
common_lock_depth(context)))
def print_unhandled():
keys = unhandled.keys()
if not keys:
return
print("\nunhandled events:\n")
print("%-40s %10s" % ("event", "count"))
print("%-40s %10s" % ("----------------------------------------",
"-----------"))
for event_name in keys:
print("%-40s %10d\n" % (event_name, unhandled[event_name]))
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