tracing: Select new NEED_TASKS_RCU Kconfig option

Currently, if a Kconfig option depends on TASKS_RCU, it conditionally does
"select TASKS_RCU if PREEMPTION".  This works, but requires any change in
this enablement logic to be replicated across all such "select" clauses.
A new NEED_TASKS_RCU Kconfig option has been created to allow this
enablement logic to be in one place in kernel/rcu/Kconfig.

Therefore, select the new NEED_TASKS_RCU Kconfig option instead of the
old TASKS_RCU option.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: <linux-trace-kernel@vger.kernel.org>
Cc: Ankur Arora <ankur.a.arora@oracle.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>

diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 61c541c36596d9cdb532d876b56a273f44731928..6cdc5ff919b09e563423ad88b2942d83fa363c51 100644 (file)
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -163,7 +163,7 @@ config TRACING
        select BINARY_PRINTF
        select EVENT_TRACING
        select TRACE_CLOCK
-       select TASKS_RCU if PREEMPTION
+       select NEED_TASKS_RCU
 
 config GENERIC_TRACER
        bool
@@ -204,7 +204,7 @@ config FUNCTION_TRACER
        select GENERIC_TRACER
        select CONTEXT_SWITCH_TRACER
        select GLOB
-       select TASKS_RCU if PREEMPTION
+       select NEED_TASKS_RCU
        select TASKS_RUDE_RCU
        help
          Enable the kernel to trace every kernel function. This is done