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tools/sched_ext: Fix scx_show_state per-scheduler state reads

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scx_show_state.py still reads scx_aborting and scx_bypass_depth as
global symbols. Those symbols no longer exist after the state was moved
into struct scx_sched, so the drgn script fails when it reaches either
field.

Read aborting and bypass_depth from scx_root instead. This preserves the
script's current root-scheduler view: with sub-scheduler support, the
reported values are for the root scheduler and sub-schedulers are not
enumerated.

Fixes: 5c8d98a1b4 ("sched_ext: Move bypass state into scx_sched")
Fixes: c1743da43c ("sched_ext: Move aborting flag to per-scheduler field")
Signed-off-by: Zicheng Qu <quzicheng@huawei.com>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Zicheng Qu 2026-05-27 17:38:50 +08:00 • committed by Tejun Heo
commit b565a73bae
1 changed files with 13 additions and 6 deletions
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19
tools/sched_ext/scx_show_state.py
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@ -27,18 +27,25 @@ def read_static_key(name):
def state_str(state):
return prog['scx_enable_state_str'][state].string_().decode()
def read_root_ops_name():
if root:
return root.ops.name.string_().decode()
return ''
def read_root_field(name, default):
if root:
return getattr(root, name).value_()
return default
root = prog['scx_root']
enable_state = read_atomic("scx_enable_state_var")
if root:
print(f'ops : {root.ops.name.string_().decode()}')
else:
print('ops : ')
print(f'ops : {read_root_ops_name()}')
print(f'enabled : {read_static_key("__scx_enabled")}')
print(f'switching_all : {read_int("scx_switching_all")}')
print(f'switched_all : {read_static_key("__scx_switched_all")}')
print(f'enable_state : {state_str(enable_state)} ({enable_state})')
print(f'aborting : {prog["scx_aborting"].value_()}')
print(f'bypass_depth : {prog["scx_bypass_depth"].value_()}')
print(f'aborting : {read_root_field("aborting", False)}')
print(f'bypass_depth : {read_root_field("bypass_depth", 0)}')
print(f'nr_rejected : {read_atomic("scx_nr_rejected")}')
print(f'enable_seq : {read_atomic("scx_enable_seq")}')