mirror of
https://github.com/torvalds/linux.git
synced 2024-11-07 20:51:47 +00:00
0f5f5bcd11
This provides valuable information for tracing performance problems. Since this change alters the interface for the python scripts, also adjust the script generation and the provided scripts. Signed-off-by: Joseph Schuchart <joseph.schuchart@tu-dresden.de> Acked-by: Thomas Ilsche <thomas.ilsche@tu-dresden.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Ilsche <thomas.ilsche@tu-dresden.de> Link: http://lkml.kernel.org/r/53BE7E1B.10503@tu-dresden.de Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
83 lines
2.5 KiB
Python
83 lines
2.5 KiB
Python
# 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.
|
|
|
|
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\n" % \
|
|
(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\n" % \
|
|
(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),
|
|
|
|
# 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\n",
|
|
|
|
print "%-40s %10s\n" % ("event", "count"),
|
|
print "%-40s %10s\n" % ("----------------------------------------", \
|
|
"-----------"),
|
|
|
|
for event_name in keys:
|
|
print "%-40s %10d\n" % (event_name, unhandled[event_name])
|