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tools/workqueue/wq_dump.py: Clean up code and drop duplicate information

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- Factor out wq_type_str()

- Improve formatting so that it adapts to actual field widths.

- Drop duplicate information from "Workqueue -> rescuer" section. If
  anything, we should add more rescuer-specific info - e.g. the number of
  work items rescued.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
This commit is contained in:
Tejun Heo 2024-01-25 06:21:56 -10:00
parent 7bd20b6b87
commit a6b48c83d2
1 changed files with 36 additions and 35 deletions
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71
tools/workqueue/wq_dump.py
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@ -75,6 +75,20 @@ def cpumask_str(cpumask):
output += f'{v:08x}'
return output.strip()
wq_type_len = 9
def wq_type_str(wq):
if wq.flags & WQ_UNBOUND:
if wq.flags & WQ_ORDERED:
return f'{"ordered":{wq_type_len}}'
else:
if wq.unbound_attrs.affn_strict:
return f'{"unbound,S":{wq_type_len}}'
else:
return f'{"unbound":{wq_type_len}}'
else:
return f'{"percpu":{wq_type_len}}'
worker_pool_idr = prog['worker_pool_idr']
workqueues = prog['workqueues']
wq_unbound_cpumask = prog['wq_unbound_cpumask']
@ -92,6 +106,10 @@ WQ_AFFN_CACHE = prog['WQ_AFFN_CACHE']
WQ_AFFN_NUMA = prog['WQ_AFFN_NUMA']
WQ_AFFN_SYSTEM = prog['WQ_AFFN_SYSTEM']
WQ_NAME_LEN = prog['WQ_NAME_LEN'].value_()
cpumask_str_len = len(cpumask_str(wq_unbound_cpumask))
print('Affinity Scopes')
print('===============')
@ -148,24 +166,13 @@ print('')
print('Workqueue CPU -> pool')
print('=====================')
print('[ workqueue \ type CPU', end='')
print(f'[{"workqueue":^{WQ_NAME_LEN-2}}\\ {"type CPU":{wq_type_len}}', end='')
for cpu in for_each_possible_cpu(prog):
print(f' {cpu:{max_pool_id_len}}', end='')
print(' dfl]')
for wq in list_for_each_entry('struct workqueue_struct', workqueues.address_of_(), 'list'):
print(f'{wq.name.string_().decode()[-24:]:24}', end='')
if wq.flags & WQ_UNBOUND:
if wq.flags & WQ_ORDERED:
print(' ordered ', end='')
else:
print(' unbound', end='')
if wq.unbound_attrs.affn_strict:
print(',S ', end='')
else:
print(' ', end='')
else:
print(' percpu ', end='')
print(f'{wq.name.string_().decode():{WQ_NAME_LEN}} {wq_type_str(wq):10}', end='')
for cpu in for_each_possible_cpu(prog):
pool_id = per_cpu_ptr(wq.cpu_pwq, cpu)[0].pool.id.value_()
@ -178,29 +185,23 @@ for wq in list_for_each_entry('struct workqueue_struct', workqueues.address_of_(
print('')
print('Workqueue -> rescuer')
print('=====================')
print(f'wq_unbound_cpumask={cpumask_str(wq_unbound_cpumask)}')
print('')
print('[ workqueue \ type unbound_cpumask rescuer pid cpumask]')
print('====================')
ucpus_len = max(cpumask_str_len, len("unbound_cpus"))
rcpus_len = max(cpumask_str_len, len("rescuer_cpus"))
print(f'[{"workqueue":^{WQ_NAME_LEN-2}}\\ {"unbound_cpus":{ucpus_len}} pid {"rescuer_cpus":{rcpus_len}} ]')
for wq in list_for_each_entry('struct workqueue_struct', workqueues.address_of_(), 'list'):
print(f'{wq.name.string_().decode()[-24:]:24}', end='')
if wq.flags & WQ_UNBOUND:
if wq.flags & WQ_ORDERED:
print(' ordered ', end='')
else:
print(' unbound', end='')
if wq.unbound_attrs.affn_strict:
print(',S ', end='')
else:
print(' ', end='')
print(f' {cpumask_str(wq.unbound_attrs.cpumask):24}', end='')
else:
print(' percpu ', end='')
print(' ', end='')
if not (wq.flags & WQ_MEM_RECLAIM):
continue
if wq.flags & WQ_MEM_RECLAIM:
print(f' {wq.rescuer.task.comm.string_().decode()[-24:]:24}', end='')
print(f' {wq.rescuer.task.pid.value_():5}', end='')
print(f' {cpumask_str(wq.rescuer.task.cpus_ptr)}', end='')
print(f'{wq.name.string_().decode():{WQ_NAME_LEN}}', end='')
if wq.unbound_attrs.value_() != 0:
print(f' {cpumask_str(wq.unbound_attrs.cpumask):{ucpus_len}}', end='')
else:
print(f' {"":{ucpus_len}}', end='')
print(f' {wq.rescuer.task.pid.value_():6}', end='')
print(f' {cpumask_str(wq.rescuer.task.cpus_ptr):{rcpus_len}}', end='')
print('')