Commit 1c3ae1cb authored by Tejun Heo's avatar Tejun Heo
Browse files

tools/sched_ext: Add scx_show_state.py 



There are states which are interesting but don't quite fit the interface
exposed under /sys/kernel/sched_ext. Add tools/scx_show_state.py to show
them.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Reviewed-by: default avatarDavid Vernet <dvernet@meta.com>
parent 07814a94

tools/sched_ext/scx_show_state.py

0 → 100644
+39 −0
Original line number Diff line number Diff line 
#!/usr/bin/env drgn

#

# Copyright (C) 2024 Tejun Heo <tj@kernel.org>

# Copyright (C) 2024 Meta Platforms, Inc. and affiliates.



desc = """

This is a drgn script to show the current sched_ext state.

For more info on drgn, visit https://github.com/osandov/drgn.

"""



import drgn

import sys



def err(s):

    print(s, file=sys.stderr, flush=True)

    sys.exit(1)



def read_int(name):

    return int(prog[name].value_())



def read_atomic(name):

    return prog[name].counter.value_()



def read_static_key(name):

    return prog[name].key.enabled.counter.value_()



def ops_state_str(state):

    return prog['scx_ops_enable_state_str'][state].string_().decode()



ops = prog['scx_ops']

enable_state = read_atomic("scx_ops_enable_state_var")



print(f'ops           : {ops.name.string_().decode()}')

print(f'enabled       : {read_static_key("__scx_ops_enabled")}')

print(f'switching_all : {read_int("scx_switching_all")}')

print(f'switched_all  : {read_static_key("__scx_switched_all")}')

print(f'enable_state  : {ops_state_str(enable_state)} ({enable_state})')

print(f'bypass_depth  : {read_atomic("scx_ops_bypass_depth")}')

print(f'nr_rejected   : {read_atomic("scx_nr_rejected")}')