sched_ext: Refactor lockup handlers into handle_lockup()

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scx_rcu_cpu_stall() and scx_softlockup() share the same pattern: check if the
scheduler is enabled under RCU read lock and trigger an error if so. Extract
the common pattern into handle_lockup() helper. Add scx_verror() macro and use
guard(rcu)().

This simplifies both handlers, reduces code duplication, and prepares for
hardlockup handling.

Reviewed-by: Dan Schatzberg <schatzberg.dan@gmail.com>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Cc: Emil Tsalapatis <etsal@meta.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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Tejun Heo 2025-11-11 09:18:10 -10:00

parent f2fe382e1f

commit 4ba54a6cbd

1 changed files with 25 additions and 40 deletions

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kernel/sched/ext.c

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