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SubjectRe: [PATCH 06/15] perf script python: add Python3 support to intel-pt-events.py
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On 23/02/19 1:06 AM, Tony Jones wrote:
> Support both Python2 and Python3 in the intel-pt-events.py script
>
> There may be differences in the ordering of output lines due to
> differences in dictionary ordering etc. However the format within lines
> should be unchanged.
>
> Fix space/tab inconsistency as python3 enforces consistency.

It would be better for the white space changes to be a separate patch.

But I am not in favour of using spaces instead of tabs because it is the
opposite of what we tend to do with C.

Arnaldo, can you provide a guideline on this?

>
> The use of 'from __future__' implies the minimum supported Python2 version
> is now v2.6
>
> Signed-off-by: Tony Jones <tonyj@suse.de>
> Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com>
> Cc: Adrian Hunter <adrian.hunter@intel.com>
> ---
> tools/perf/scripts/python/intel-pt-events.py | 138 ++++++++++---------
> 1 file changed, 70 insertions(+), 68 deletions(-)
>
> diff --git a/tools/perf/scripts/python/intel-pt-events.py b/tools/perf/scripts/python/intel-pt-events.py
> index b19172d673af..aef54566af61 100644
> --- a/tools/perf/scripts/python/intel-pt-events.py
> +++ b/tools/perf/scripts/python/intel-pt-events.py
> @@ -10,79 +10,81 @@
> # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
> # more details.
>
> +from __future__ import print_function
> +
> import os
> import sys
> import struct
>
> sys.path.append(os.environ['PERF_EXEC_PATH'] + \
> - '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
> + '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
>
> # These perf imports are not used at present
> #from perf_trace_context import *
> #from Core import *
>
> def trace_begin():
> - print "Intel PT Power Events and PTWRITE"
> + print("Intel PT Power Events and PTWRITE")
>
> def trace_end():
> - print "End"
> + print("End")
>
> def trace_unhandled(event_name, context, event_fields_dict):
> - print ' '.join(['%s=%s'%(k,str(v))for k,v in sorted(event_fields_dict.items())])
> + print(' '.join(['%s=%s'%(k,str(v))for k,v in sorted(event_fields_dict.items())]))
>
> def print_ptwrite(raw_buf):
> - data = struct.unpack_from("<IQ", raw_buf)
> - flags = data[0]
> - payload = data[1]
> - exact_ip = flags & 1
> - print "IP: %u payload: %#x" % (exact_ip, payload),
> + data = struct.unpack_from("<IQ", raw_buf)
> + flags = data[0]
> + payload = data[1]
> + exact_ip = flags & 1
> + print("IP: %u payload: %#x" % (exact_ip, payload), end='')
>
> def print_cbr(raw_buf):
> - data = struct.unpack_from("<BBBBII", raw_buf)
> - cbr = data[0]
> - f = (data[4] + 500) / 1000
> - p = ((cbr * 1000 / data[2]) + 5) / 10
> - print "%3u freq: %4u MHz (%3u%%)" % (cbr, f, p),
> + data = struct.unpack_from("<BBBBII", raw_buf)
> + cbr = data[0]
> + f = (data[4] + 500) / 1000
> + p = ((cbr * 1000 / data[2]) + 5) / 10
> + print("%3u freq: %4u MHz (%3u%%)" % (cbr, f, p), end='')
>
> def print_mwait(raw_buf):
> - data = struct.unpack_from("<IQ", raw_buf)
> - payload = data[1]
> - hints = payload & 0xff
> - extensions = (payload >> 32) & 0x3
> - print "hints: %#x extensions: %#x" % (hints, extensions),
> + data = struct.unpack_from("<IQ", raw_buf)
> + payload = data[1]
> + hints = payload & 0xff
> + extensions = (payload >> 32) & 0x3
> + print("hints: %#x extensions: %#x" % (hints, extensions), end='')
>
> def print_pwre(raw_buf):
> - data = struct.unpack_from("<IQ", raw_buf)
> - payload = data[1]
> - hw = (payload >> 7) & 1
> - cstate = (payload >> 12) & 0xf
> - subcstate = (payload >> 8) & 0xf
> - print "hw: %u cstate: %u sub-cstate: %u" % (hw, cstate, subcstate),
> + data = struct.unpack_from("<IQ", raw_buf)
> + payload = data[1]
> + hw = (payload >> 7) & 1
> + cstate = (payload >> 12) & 0xf
> + subcstate = (payload >> 8) & 0xf
> + print("hw: %u cstate: %u sub-cstate: %u" % (hw, cstate, subcstate), end='')
>
> def print_exstop(raw_buf):
> - data = struct.unpack_from("<I", raw_buf)
> - flags = data[0]
> - exact_ip = flags & 1
> - print "IP: %u" % (exact_ip),
> + data = struct.unpack_from("<I", raw_buf)
> + flags = data[0]
> + exact_ip = flags & 1
> + print("IP: %u" % (exact_ip), end='')
>
> def print_pwrx(raw_buf):
> - data = struct.unpack_from("<IQ", raw_buf)
> - payload = data[1]
> - deepest_cstate = payload & 0xf
> - last_cstate = (payload >> 4) & 0xf
> - wake_reason = (payload >> 8) & 0xf
> - print "deepest cstate: %u last cstate: %u wake reason: %#x" % (deepest_cstate, last_cstate, wake_reason),
> + data = struct.unpack_from("<IQ", raw_buf)
> + payload = data[1]
> + deepest_cstate = payload & 0xf
> + last_cstate = (payload >> 4) & 0xf
> + wake_reason = (payload >> 8) & 0xf
> + print("deepest cstate: %u last cstate: %u wake reason: %#x" % (deepest_cstate, last_cstate, wake_reason), end='')
>
> def print_common_start(comm, sample, name):
> - ts = sample["time"]
> - cpu = sample["cpu"]
> - pid = sample["pid"]
> - tid = sample["tid"]
> - print "%16s %5u/%-5u [%03u] %9u.%09u %7s:" % (comm, pid, tid, cpu, ts / 1000000000, ts %1000000000, name),
> + ts = sample["time"]
> + cpu = sample["cpu"]
> + pid = sample["pid"]
> + tid = sample["tid"]
> + print("%16s %5u/%-5u [%03u] %9u.%09u %7s:" % (comm, pid, tid, cpu, ts / 1000000000, ts %1000000000, name), end='')
>
> def print_common_ip(sample, symbol, dso):
> - ip = sample["ip"]
> - print "%16x %s (%s)" % (ip, symbol, dso)
> + ip = sample["ip"]
> + print("%16x %s (%s)" % (ip, symbol, dso))
>
> def process_event(param_dict):
> event_attr = param_dict["attr"]
> @@ -92,37 +94,37 @@ def process_event(param_dict):
> name = param_dict["ev_name"]
>
> # Symbol and dso info are not always resolved
> - if (param_dict.has_key("dso")):
> + if "dso" in param_dict:
> dso = param_dict["dso"]
> else:
> dso = "[unknown]"
>
> - if (param_dict.has_key("symbol")):
> + if "symbol" in param_dict:
> symbol = param_dict["symbol"]
> else:
> symbol = "[unknown]"
>
> - if name == "ptwrite":
> - print_common_start(comm, sample, name)
> - print_ptwrite(raw_buf)
> - print_common_ip(sample, symbol, dso)
> - elif name == "cbr":
> - print_common_start(comm, sample, name)
> - print_cbr(raw_buf)
> - print_common_ip(sample, symbol, dso)
> - elif name == "mwait":
> - print_common_start(comm, sample, name)
> - print_mwait(raw_buf)
> - print_common_ip(sample, symbol, dso)
> - elif name == "pwre":
> - print_common_start(comm, sample, name)
> - print_pwre(raw_buf)
> - print_common_ip(sample, symbol, dso)
> - elif name == "exstop":
> - print_common_start(comm, sample, name)
> - print_exstop(raw_buf)
> - print_common_ip(sample, symbol, dso)
> - elif name == "pwrx":
> - print_common_start(comm, sample, name)
> - print_pwrx(raw_buf)
> - print_common_ip(sample, symbol, dso)
> + if name == "ptwrite":
> + print_common_start(comm, sample, name)
> + print_ptwrite(raw_buf)
> + print_common_ip(sample, symbol, dso)
> + elif name == "cbr":
> + print_common_start(comm, sample, name)
> + print_cbr(raw_buf)
> + print_common_ip(sample, symbol, dso)
> + elif name == "mwait":
> + print_common_start(comm, sample, name)
> + print_mwait(raw_buf)
> + print_common_ip(sample, symbol, dso)
> + elif name == "pwre":
> + print_common_start(comm, sample, name)
> + print_pwre(raw_buf)
> + print_common_ip(sample, symbol, dso)
> + elif name == "exstop":
> + print_common_start(comm, sample, name)
> + print_exstop(raw_buf)
> + print_common_ip(sample, symbol, dso)
> + elif name == "pwrx":
> + print_common_start(comm, sample, name)
> + print_pwrx(raw_buf)
> + print_common_ip(sample, symbol, dso)
>

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