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