sched_ext: Gate cid kfuncs behind the SCX struct_ops check

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scx_bpf_cid_to_cpu(), scx_bpf_cpu_to_cid() and scx_bpf_cid_topo() live in
the scx_kfunc_ids_cid set, but scx_kfunc_context_filter() doesn't check
that set. The filter's first test treats any kfunc outside its known sets
as non-SCX and allows it, so these three kfuncs can be called from any
struct_ops program - e.g. a TCP congestion control program.

Add scx_kfunc_ids_cid to the filter's known sets, matching how in_any and
in_idle are handled.

Fixes: e9b55af47e ("sched_ext: Add topological CPU IDs (cids)")
Assisted-by: Z.ai:glm-5.2
Signed-off-by: fangqiurong <fangqiurong@kylinos.cn>
Signed-off-by: Tejun Heo <tj@kernel.org>

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fangqiurong 2026-08-12 14:11:16 +08:00 • committed by Tejun Heo

parent 1be10bb070

commit 0c09d1ad81

2 changed files with 6 additions and 4 deletions

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1

kernel/sched/ext/cid.h

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9

kernel/sched/ext/ext.c

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