Moving rcu_tasks_trace_srcu_struct out the CONFIG_TASKS_RCU_GENERIC removed, and also permits the CONFIG_TASKS_TRACE_RCU Kconfig option to stop enabling the CONFIG_TASKS_RCU_GENERIC Kconfig option. This commit therefore makes it so.
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]> --- kernel/rcu/Kconfig | 2 +- kernel/rcu/tasks.h | 38 +++++++++++++------------------------- 2 files changed, 14 insertions(+), 26 deletions(-) diff --git a/kernel/rcu/Kconfig b/kernel/rcu/Kconfig index ceaf6594f634cd..eeaa1cd47c6c4c 100644 --- a/kernel/rcu/Kconfig +++ b/kernel/rcu/Kconfig @@ -82,7 +82,7 @@ config NEED_SRCU_NMI_SAFE def_bool HAVE_NMI && !ARCH_HAS_NMI_SAFE_THIS_CPU_OPS && !TINY_SRCU config TASKS_RCU_GENERIC - def_bool TASKS_RCU || TASKS_RUDE_RCU || TASKS_TRACE_RCU + def_bool TASKS_RCU || TASKS_RUDE_RCU help This option enables generic infrastructure code supporting task-based RCU implementations. Not for manual selection. diff --git a/kernel/rcu/tasks.h b/kernel/rcu/tasks.h index e70609c85ece5d..a3c16e65e16812 100644 --- a/kernel/rcu/tasks.h +++ b/kernel/rcu/tasks.h @@ -1444,31 +1444,6 @@ EXPORT_SYMBOL_GPL(rcu_tasks_rude_get_gp_data); #endif /* #ifdef CONFIG_TASKS_RUDE_RCU */ -//////////////////////////////////////////////////////////////////////// -// -// Tracing variant of Tasks RCU. This variant is designed to be used -// to protect tracing hooks, including those of BPF. This variant -// is implemented via a straightforward mapping onto SRCU-fast. - -#ifdef CONFIG_TASKS_TRACE_RCU - -DEFINE_SRCU(rcu_tasks_trace_srcu_struct); -EXPORT_SYMBOL_GPL(rcu_tasks_trace_srcu_struct); - -// Placeholder to suppress build errors through transition period. -void __init rcu_tasks_trace_suppress_unused(void) -{ - show_rcu_tasks_generic_gp_kthread(NULL, NULL); - rcu_spawn_tasks_kthread_generic(NULL); - synchronize_rcu_tasks_generic(NULL); - call_rcu_tasks_generic(NULL, NULL, NULL); - call_rcu_tasks_iw_wakeup(NULL); - cblist_init_generic(NULL); - rcu_tasks_torture_stats_print_generic(NULL, NULL, NULL, NULL); -} - -#endif /* #else #ifdef CONFIG_TASKS_TRACE_RCU */ - #ifndef CONFIG_TINY_RCU void show_rcu_tasks_gp_kthreads(void) { @@ -1622,3 +1597,16 @@ core_initcall(rcu_init_tasks_generic); #else /* #ifdef CONFIG_TASKS_RCU_GENERIC */ static inline void rcu_tasks_bootup_oddness(void) {} #endif /* #else #ifdef CONFIG_TASKS_RCU_GENERIC */ + +#ifdef CONFIG_TASKS_TRACE_RCU + +//////////////////////////////////////////////////////////////////////// +// +// Tracing variant of Tasks RCU. This variant is designed to be used +// to protect tracing hooks, including those of BPF. This variant +// is implemented via a straightforward mapping onto SRCU-fast. + +DEFINE_SRCU(rcu_tasks_trace_srcu_struct); +EXPORT_SYMBOL_GPL(rcu_tasks_trace_srcu_struct); + +#endif /* #else #ifdef CONFIG_TASKS_TRACE_RCU */ -- 2.40.1
