The get_rcu_tasks_trace_gp_kthread() is used by rcuscale to diagnose bugs involving the RCU Tasks Trace grace-period kthread, which now no longer exists. This commit therefore removes this function.
Signed-off-by: Paul E. McKenney <[email protected]> Cc: Andrii Nakryiko <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: <[email protected]> --- include/linux/rcupdate_trace.h | 1 - kernel/rcu/rcuscale.c | 1 - kernel/rcu/tasks.h | 6 ------ 3 files changed, 8 deletions(-) diff --git a/include/linux/rcupdate_trace.h b/include/linux/rcupdate_trace.h index ffd4dcd6339ae4..0bd47f12ecd17b 100644 --- a/include/linux/rcupdate_trace.h +++ b/include/linux/rcupdate_trace.h @@ -137,7 +137,6 @@ static inline void rcu_barrier_tasks_trace(void) // Placeholders to enable stepwise transition. void __init rcu_tasks_trace_suppress_unused(void); -struct task_struct *get_rcu_tasks_trace_gp_kthread(void); #else /* diff --git a/kernel/rcu/rcuscale.c b/kernel/rcu/rcuscale.c index 16ba9050dab66b..17d038e26b65de 100644 --- a/kernel/rcu/rcuscale.c +++ b/kernel/rcu/rcuscale.c @@ -411,7 +411,6 @@ static struct rcu_scale_ops tasks_tracing_ops = { .gp_barrier = rcu_barrier_tasks_trace, .sync = synchronize_rcu_tasks_trace, .exp_sync = synchronize_rcu_tasks_trace, - .rso_gp_kthread = get_rcu_tasks_trace_gp_kthread, .name = "tasks-tracing" }; diff --git a/kernel/rcu/tasks.h b/kernel/rcu/tasks.h index 4fb61b3c78283d..e70609c85ece5d 100644 --- a/kernel/rcu/tasks.h +++ b/kernel/rcu/tasks.h @@ -1467,12 +1467,6 @@ void __init rcu_tasks_trace_suppress_unused(void) rcu_tasks_torture_stats_print_generic(NULL, NULL, NULL, NULL); } -struct task_struct *get_rcu_tasks_trace_gp_kthread(void) -{ - return NULL; -} -EXPORT_SYMBOL_GPL(get_rcu_tasks_trace_gp_kthread); - #endif /* #else #ifdef CONFIG_TASKS_TRACE_RCU */ #ifndef CONFIG_TINY_RCU -- 2.40.1
