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Message-Id: <20240916135743.1490403-7-james.clark@linaro.org>
Date: Mon, 16 Sep 2024 14:57:37 +0100
From: James Clark <james.clark@...aro.org>
To: linux-perf-users@...r.kernel.org,
gankulkarni@...amperecomputing.com,
coresight@...ts.linaro.org,
leo.yan@....com,
scclevenger@...amperecomputing.com
Cc: James Clark <james.clark@...aro.org>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>,
Ian Rogers <irogers@...gle.com>,
Adrian Hunter <adrian.hunter@...el.com>,
"Liang, Kan" <kan.liang@...ux.intel.com>,
Suzuki K Poulose <suzuki.poulose@....com>,
Mike Leach <mike.leach@...aro.org>,
John Garry <john.g.garry@...cle.com>,
Will Deacon <will@...nel.org>,
Leo Yan <leo.yan@...ux.dev>,
Ben Gainey <ben.gainey@....com>,
Ruidong Tian <tianruidong@...ux.alibaba.com>,
Benjamin Gray <bgray@...ux.ibm.com>,
Mathieu Poirier <mathieu.poirier@...aro.org>,
linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v3 6/7] perf scripts python cs-etm: Add start and stop arguments
Make it possible to only disassemble a range of timestamps or sample
indexes. This will be used by the test to limit the runtime, but it's
also useful for users.
Reviewed-by: Leo Yan <leo.yan@....com>
Signed-off-by: James Clark <james.clark@...aro.org>
---
.../scripts/python/arm-cs-trace-disasm.py | 40 ++++++++++++++++++-
1 file changed, 38 insertions(+), 2 deletions(-)
diff --git a/tools/perf/scripts/python/arm-cs-trace-disasm.py b/tools/perf/scripts/python/arm-cs-trace-disasm.py
index 02e957d037ea..1128d259b4f4 100755
--- a/tools/perf/scripts/python/arm-cs-trace-disasm.py
+++ b/tools/perf/scripts/python/arm-cs-trace-disasm.py
@@ -49,13 +49,36 @@ def default_objdump():
return config if config else "objdump"
# Command line parsing.
+def int_arg(v):
+ v = int(v)
+ if v < 0:
+ raise argparse.ArgumentTypeError("Argument must be a positive integer")
+ return v
+
args = argparse.ArgumentParser()
args.add_argument("-k", "--vmlinux",
help="Set path to vmlinux file. Omit to autodetect if running on same machine")
args.add_argument("-d", "--objdump", nargs="?", const=default_objdump(),
help="Show disassembly. Can also be used to change the objdump path"),
args.add_argument("-v", "--verbose", action="store_true", help="Enable debugging log")
+args.add_argument("--start-time", type=int_arg, help="Monotonic clock time of sample to start from. "
+ "See 'time' field on samples in -v mode.")
+args.add_argument("--stop-time", type=int_arg, help="Monotonic clock time of sample to stop at. "
+ "See 'time' field on samples in -v mode.")
+args.add_argument("--start-sample", type=int_arg, help="Index of sample to start from. "
+ "See 'index' field on samples in -v mode.")
+args.add_argument("--stop-sample", type=int_arg, help="Index of sample to stop at. "
+ "See 'index' field on samples in -v mode.")
+
options = args.parse_args()
+if (options.start_time and options.stop_time and
+ options.start_time >= options.stop_time):
+ print("--start-time must less than --stop-time")
+ exit(2)
+if (options.start_sample and options.stop_sample and
+ options.start_sample >= options.stop_sample):
+ print("--start-sample must less than --stop-sample")
+ exit(2)
# Initialize global dicts and regular expression
disasm_cache = dict()
@@ -63,6 +86,7 @@ cpu_data = dict()
disasm_re = re.compile(r"^\s*([0-9a-fA-F]+):")
disasm_func_re = re.compile(r"^\s*([0-9a-fA-F]+)\s.*:")
cache_size = 64*1024
+sample_idx = -1
glb_source_file_name = None
glb_line_number = None
@@ -151,10 +175,10 @@ def print_disam(dso_fname, dso_start, start_addr, stop_addr):
def print_sample(sample):
print("Sample = { cpu: %04d addr: 0x%016x phys_addr: 0x%016x ip: 0x%016x " \
- "pid: %d tid: %d period: %d time: %d }" % \
+ "pid: %d tid: %d period: %d time: %d index: %d}" % \
(sample['cpu'], sample['addr'], sample['phys_addr'], \
sample['ip'], sample['pid'], sample['tid'], \
- sample['period'], sample['time']))
+ sample['period'], sample['time'], sample_idx))
def trace_begin():
print('ARM CoreSight Trace Data Assembler Dump')
@@ -216,6 +240,7 @@ def print_srccode(comm, param_dict, sample, symbol, dso):
def process_event(param_dict):
global cache_size
global options
+ global sample_idx
sample = param_dict["sample"]
comm = param_dict["comm"]
@@ -231,6 +256,17 @@ def process_event(param_dict):
ip = sample["ip"]
addr = sample["addr"]
+ sample_idx += 1
+
+ if (options.start_time and sample["time"] < options.start_time):
+ return
+ if (options.stop_time and sample["time"] > options.stop_time):
+ exit(0)
+ if (options.start_sample and sample_idx < options.start_sample):
+ return
+ if (options.stop_sample and sample_idx > options.stop_sample):
+ exit(0)
+
if (options.verbose == True):
print("Event type: %s" % name)
print_sample(sample)
--
2.34.1
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