bpf: 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, make BPF select the new NEED_TASKS_RCU Kconfig option.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Martin KaFai Lau <martin.lau@linux.dev>
Cc: Song Liu <song@kernel.org>
Cc: Yonghong Song <yonghong.song@linux.dev>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: KP Singh <kpsingh@kernel.org>
Cc: Stanislav Fomichev <sdf@google.com>
Cc: Hao Luo <haoluo@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: <bpf@vger.kernel.org>
Cc: Ankur Arora <ankur.a.arora@oracle.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>

diff --git a/kernel/bpf/Kconfig b/kernel/bpf/Kconfig
index bc25f5098a254b6ceea74267be15026ecd3418fa..4100df44c66529277893c4ad342a82efce2259cf 100644 (file)
--- a/kernel/bpf/Kconfig
+++ b/kernel/bpf/Kconfig
@@ -28,7 +28,7 @@ config BPF_SYSCALL
        bool "Enable bpf() system call"
        select BPF
        select IRQ_WORK
-       select TASKS_RCU if PREEMPTION
+       select NEED_TASKS_RCU
        select TASKS_TRACE_RCU
        select BINARY_PRINTF
        select NET_SOCK_MSG if NET