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scx_rcu_cpu_stall() previously recorded the detector CPU rather than the stalled one, and the expedited grace period path had no stalled CPU to report at all. Thread a cpumask through panic_on_rcu_stall() and scx_rcu_cpu_stall() to capture all stalled CPUs. Report cpumask_first() as exit_cpu and the full CPU list in the exit message. Task-only stalls yield exit_cpu = -1. Store the stall mask in scx_sched rather than scx_exit_info, keeping the BPF-visible struct unchanged. scx_dump_state() reads sch->stall_cpus directly and dumps all stalled CPUs first to avoid losing them to truncation. Signed-off-by: Cheng-Yang Chou <yphbchou0911@gmail.com> Reviewed-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Andrea Righi <arighi@nvidia.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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| .. | ||
| Kconfig | ||
| Kconfig.debug | ||
| Makefile | ||
| rcu_segcblist.c | ||
| rcu_segcblist.h | ||
| rcu.h | ||
| rcuscale.c | ||
| rcutorture.c | ||
| refscale.c | ||
| srcutiny.c | ||
| srcutree.c | ||
| sync.c | ||
| tasks.h | ||
| tiny.c | ||
| tree_exp.h | ||
| tree_nocb.h | ||
| tree_plugin.h | ||
| tree_stall.h | ||
| tree.c | ||
| tree.h | ||
| update.c | ||