linux-kernel - [PATCH v3 18/35] locking/local

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Message-ID: <20250918140451.1289454-19-elver@google.com>
Date: Thu, 18 Sep 2025 15:59:29 +0200
From: Marco Elver <elver@...gle.com>
To: elver@...gle.com, Peter Zijlstra <peterz@...radead.org>, 
	Boqun Feng <boqun.feng@...il.com>, Ingo Molnar <mingo@...nel.org>, Will Deacon <will@...nel.org>
Cc: "David S. Miller" <davem@...emloft.net>, Luc Van Oostenryck <luc.vanoostenryck@...il.com>, 
	"Paul E. McKenney" <paulmck@...nel.org>, Alexander Potapenko <glider@...gle.com>, Arnd Bergmann <arnd@...db.de>, 
	Bart Van Assche <bvanassche@....org>, Bill Wendling <morbo@...gle.com>, Christoph Hellwig <hch@....de>, 
	Dmitry Vyukov <dvyukov@...gle.com>, Eric Dumazet <edumazet@...gle.com>, 
	Frederic Weisbecker <frederic@...nel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	Herbert Xu <herbert@...dor.apana.org.au>, Ian Rogers <irogers@...gle.com>, 
	Jann Horn <jannh@...gle.com>, Joel Fernandes <joelagnelf@...dia.com>, 
	Jonathan Corbet <corbet@....net>, Josh Triplett <josh@...htriplett.org>, 
	Justin Stitt <justinstitt@...gle.com>, Kees Cook <kees@...nel.org>, 
	Kentaro Takeda <takedakn@...data.co.jp>, Lukas Bulwahn <lukas.bulwahn@...il.com>, 
	Mark Rutland <mark.rutland@....com>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, 
	Miguel Ojeda <ojeda@...nel.org>, Nathan Chancellor <nathan@...nel.org>, 
	Neeraj Upadhyay <neeraj.upadhyay@...nel.org>, 
	Nick Desaulniers <nick.desaulniers+lkml@...il.com>, Steven Rostedt <rostedt@...dmis.org>, 
	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>, Thomas Gleixner <tglx@...utronix.de>, 
	Thomas Graf <tgraf@...g.ch>, Uladzislau Rezki <urezki@...il.com>, Waiman Long <longman@...hat.com>, 
	kasan-dev@...glegroups.com, linux-crypto@...r.kernel.org, 
	linux-doc@...r.kernel.org, linux-kbuild@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, 
	linux-security-module@...r.kernel.org, linux-sparse@...r.kernel.org, 
	llvm@...ts.linux.dev, rcu@...r.kernel.org
Subject: [PATCH v3 18/35] locking/local_lock: Include missing headers

Including <linux/local_lock.h> into an empty TU will result in the
compiler complaining:

./include/linux/local_lock.h: In function ‘class_local_lock_irqsave_constructor’:
./include/linux/local_lock_internal.h:95:17: error: implicit declaration of function ‘local_irq_save’; <...>
   95 |                 local_irq_save(flags);                          \
      |                 ^~~~~~~~~~~~~~

As well as (some architectures only, such as 'sh'):

./include/linux/local_lock_internal.h: In function ‘local_lock_acquire’:
./include/linux/local_lock_internal.h:33:20: error: ‘current’ undeclared (first use in this function)
   33 |         l->owner = current;

Include missing headers to allow including local_lock.h where the
required headers are not otherwise included.

Signed-off-by: Marco Elver <elver@...gle.com>
---
 include/linux/local_lock_internal.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/local_lock_internal.h b/include/linux/local_lock_internal.h
index d80b5306a2c0..4c0e117d2d08 100644
--- a/include/linux/local_lock_internal.h
+++ b/include/linux/local_lock_internal.h
@@ -4,7 +4,9 @@
 #endif
 
 #include <linux/percpu-defs.h>
+#include <linux/irqflags.h>
 #include <linux/lockdep.h>
+#include <asm/current.h>
 
 #ifndef CONFIG_PREEMPT_RT
 
-- 
2.51.0.384.g4c02a37b29-goog