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perf script python: Adjust objdump start/end per map pgoff parameter

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Extract map_pgoff parameter from the dictionary, and adjust start/end
range passed to objdump based on the value.

A zero start_addr is filtered to prevent output of dso address range
check failures. This script repeatedly sees a zero value passed
in for
      start_addr = cpu_data[str(cpu) + 'addr']

These zero values are not a new problem. The start_addr/stop_addr warning
clutters the instruction trace output, hence this change.

Signed-off-by: Steve Clevenger <scclevenger@os.amperecomputing.com>
Reviewed-by: Leo Yan <leo.yan@arm.com>
Cc: suzuki.poulose@arm.com
Cc: james.clark@linaro.org
Cc: mike.leach@linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: coresight@lists.linaro.org
Cc: ilkka@os.amperecomputing.com
Link: https://lore.kernel.org/r/21ccdd22e664bdeccb878672d4b2c0518873c1e5.1731027120.git.scclevenger@os.amperecomputing.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Steve Clevenger 2024-11-08 12:11:17 -07:00 committed by Namhyung Kim
parent 26ec3d7cc3
commit e8328bf3cd
1 changed files with 11 additions and 5 deletions
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14
tools/perf/scripts/python/arm-cs-trace-disasm.py
View File

@ -251,6 +251,10 @@ def process_event(param_dict):
dso_start = get_optional(param_dict, "dso_map_start")
dso_end = get_optional(param_dict, "dso_map_end")
symbol = get_optional(param_dict, "symbol")
map_pgoff = get_optional(param_dict, "map_pgoff")
# check for valid map offset
if (str(map_pgoff) == '[unknown]'):
map_pgoff = 0
cpu = sample["cpu"]
ip = sample["ip"]
@ -318,8 +322,9 @@ def process_event(param_dict):
# Record for previous sample packet
cpu_data[str(cpu) + 'addr'] = addr
# Handle CS_ETM_TRACE_ON packet if start_addr=0 and stop_addr=4
if (start_addr == 0 and stop_addr == 4):
# Filter out zero start_address. Optionally identify CS_ETM_TRACE_ON packet
if (start_addr == 0):
if ((stop_addr == 4) and (options.verbose == True)):
print("CPU%d: CS_ETM_TRACE_ON packet is inserted" % cpu)
return
@ -337,13 +342,14 @@ def process_event(param_dict):
# vm_start to zero.
if (dso == "[kernel.kallsyms]" or dso_start == 0x400000):
dso_vm_start = 0
map_pgoff = 0
else:
dso_vm_start = int(dso_start)
dso_fname = get_dso_file_path(dso, dso_bid)
if path.exists(dso_fname):
print_disam(dso_fname, dso_vm_start, start_addr, stop_addr)
print_disam(dso_fname, dso_vm_start, start_addr + map_pgoff, stop_addr + map_pgoff)
else:
print("Failed to find dso %s for address range [ 0x%x .. 0x%x ]" % (dso, start_addr, stop_addr))
print("Failed to find dso %s for address range [ 0x%x .. 0x%x ]" % (dso, start_addr + map_pgoff, stop_addr + map_pgoff))
print_srccode(comm, param_dict, sample, symbol, dso)