Message ID | 20240223002627.1987886-4-paulmck@kernel.org |
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State | New |
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McKenney" <paulmck@kernel.org> To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, kernel-team@meta.com, rostedt@goodmis.org, "Paul E. McKenney" <paulmck@kernel.org>, Masami Hiramatsu <mhiramat@kernel.org>, Mathieu Desnoyers <mathieu.desnoyers@efficios.com>, linux-trace-kernel@vger.kernel.org, Ankur Arora <ankur.a.arora@oracle.com>, Thomas Gleixner <tglx@linutronix.de>, Mark Rutland <mark.rutland@arm.com> Subject: [PATCH rcu 4/4] tracing: Select new NEED_TASKS_RCU Kconfig option Date: Thu, 22 Feb 2024 16:26:27 -0800 Message-Id: <20240223002627.1987886-4-paulmck@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <8c938bd5-6d62-4eff-9289-13b0d7ae8e17@paulmck-laptop> References: <8c938bd5-6d62-4eff-9289-13b0d7ae8e17@paulmck-laptop> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: <linux-kernel.vger.kernel.org> List-Subscribe: <mailto:linux-kernel+subscribe@vger.kernel.org> List-Unsubscribe: <mailto:linux-kernel+unsubscribe@vger.kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1791647333505943900 X-GMAIL-MSGID: 1791647333505943900 |
Series |
Refactor TASKS_RCU for lazy preemption
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Commit Message
Paul E. McKenney
Feb. 23, 2024, 12:26 a.m. UTC
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>
Cc: Mark Rutland <mark.rutland@arm.com>
---
kernel/trace/Kconfig | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 61c541c36596d..6cdc5ff919b09 100644 --- 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