linux-kernel - [PATCH 01/16] console: introduce console

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Message-ID: <20250814072456.182853-2-jirislaby@kernel.org>
Date: Thu, 14 Aug 2025 09:24:41 +0200
From: "Jiri Slaby (SUSE)" <jirislaby@...nel.org>
To: gregkh@...uxfoundation.org
Cc: linux-serial@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	"Jiri Slaby (SUSE)" <jirislaby@...nel.org>
Subject: [PATCH 01/16] console: introduce console_lock guard()s

Having this, guards like these work:
  guard(console_lock)();
or
  scoped_guard(console_lock) {
    ...
  }

See e.g. "vc_screen: use guard()s" later in this series.

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@...nel.org>
---
 include/linux/console.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/console.h b/include/linux/console.h
index 8f10d0a85bb4..031a58dc2b91 100644
--- a/include/linux/console.h
+++ b/include/linux/console.h
@@ -666,6 +666,8 @@ void vcs_remove_sysfs(int index);
  */
 extern atomic_t ignore_console_lock_warning;
 
+DEFINE_LOCK_GUARD_0(console_lock, console_lock(), console_unlock());
+
 extern void console_init(void);
 
 /* For deferred console takeover */
-- 
2.50.1