From: "Thomas Weißschuh" <thomas.weissschuh@linutronix.de>
To: Andrew Morton <akpm@linux-foundation.org>,
Petr Mladek <pmladek@suse.com>,
Steven Rostedt <rostedt@goodmis.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Sergey Senozhatsky <senozhatsky@chromium.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>, Will Deacon <will@kernel.org>,
Boqun Feng <boqun@kernel.org>, Waiman Long <longman@redhat.com>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Clark Williams <clrkwllms@kernel.org>,
Kees Cook <kees@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-rt-devel@lists.linux.dev,
"Thomas Weißschuh" <thomas.weissschuh@linutronix.de>
Subject: [PATCH v2 2/4] locking/lockdep: Add a guard for lock_map_acquire()
Date: Mon, 04 May 2026 12:47:18 +0200 [thread overview]
Message-ID: <20260504-restricted-pointers-final-v2-2-4934933503e5@linutronix.de> (raw)
In-Reply-To: <20260504-restricted-pointers-final-v2-0-4934933503e5@linutronix.de>
Make it easy to acquire a lock map based on source code structure.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
---
include/linux/lockdep.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index ae3e332f1518..fad8d71e0505 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -10,6 +10,7 @@
#ifndef __LINUX_LOCKDEP_H
#define __LINUX_LOCKDEP_H
+#include <linux/cleanup.h>
#include <linux/lockdep_types.h>
#include <linux/smp.h>
#include <asm/percpu.h>
@@ -553,6 +554,8 @@ do { \
#define lock_map_release(l) lock_release(l, _THIS_IP_)
#define lock_map_sync(l) lock_sync(l, 0, 0, 1, NULL, _THIS_IP_)
+DEFINE_GUARD(lock_map_acquire, struct lockdep_map *, lock_map_acquire(_T), lock_map_release(_T))
+
#ifdef CONFIG_PROVE_LOCKING
# define might_lock(lock) \
do { \
--
2.53.0
next prev parent reply other threads:[~2026-05-04 10:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-04 10:47 [PATCH v2 0/4] lib/vsprintf: Validate spinlock context during restricted pointer formatting Thomas Weißschuh
2026-05-04 10:47 ` [PATCH v2 1/4] locking/lockdep: Add a helper to validate the locking context without a lock Thomas Weißschuh
2026-05-04 10:47 ` Thomas Weißschuh [this message]
2026-05-04 10:47 ` [PATCH v2 3/4] lib/vsprintf: Validate spinlock context during restricted pointer formatting Thomas Weißschuh
2026-05-04 10:47 ` [PATCH v2 4/4] lib/vsprintf: Always check interrupt context restrictions Thomas Weißschuh
2026-05-04 13:00 ` Peter Zijlstra
2026-05-04 13:02 ` Sebastian Andrzej Siewior
2026-05-04 13:20 ` Thomas Weißschuh
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260504-restricted-pointers-final-v2-2-4934933503e5@linutronix.de \
--to=thomas.weissschuh@linutronix.de \
--cc=akpm@linux-foundation.org \
--cc=andriy.shevchenko@linux.intel.com \
--cc=bigeasy@linutronix.de \
--cc=boqun@kernel.org \
--cc=clrkwllms@kernel.org \
--cc=kees@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rt-devel@lists.linux.dev \
--cc=linux@rasmusvillemoes.dk \
--cc=longman@redhat.com \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=pmladek@suse.com \
--cc=rostedt@goodmis.org \
--cc=senozhatsky@chromium.org \
--cc=will@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox