Commit 66dd3b53 authored by James Clark's avatar James Clark Committed by Namhyung Kim
Browse files

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: default avatarLeo Yan <leo.yan@arm.com>
Signed-off-by: default avatarJames Clark <james.clark@linaro.org>
Tested-by: default avatarGanapatrao Kulkarni <gankulkarni@os.amperecomputing.com>
Cc: Ben Gainey <ben.gainey@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Ruidong Tian <tianruidong@linux.alibaba.com>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Benjamin Gray <bgray@linux.ibm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: coresight@lists.linaro.org
Cc: John Garry <john.g.garry@oracle.com>
Cc: scclevenger@os.amperecomputing.com
Link: https://lore.kernel.org/r/20240916135743.1490403-7-james.clark@linaro.org


Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
parent 8286cc55

tools/perf/scripts/python/arm-cs-trace-disasm.py

+38 −2
Original line number Diff line number Diff line
@@ -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)