Adding debian version 5.10.209-2.debian/5.10.209-2debian

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 48 insertions, 0 deletions

diff --git a/debian/patches-rt/0095-printk-console-remove-unnecessary-safe-buffer-usage.patch b/debian/patches-rt/0095-printk-console-remove-unnecessary-safe-buffer-usage.patch
new file mode 100644
index 000000000..2b93c47dd
--- /dev/null
+++ b/debian/patches-rt/0095-printk-console-remove-unnecessary-safe-buffer-usage.patch
@@ -0,0 +1,48 @@
+From 259c5c359d06d8bbbddebc6cc12fc2abc6bb2783 Mon Sep 17 00:00:00 2001
+From: John Ogness <john.ogness@linutronix.de>
+Date: Wed, 17 Feb 2021 18:28:05 +0100
+Subject: [PATCH 095/323] printk: console: remove unnecessary safe buffer usage
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.204-rt100.tar.xz
+
+Upon registering a console, safe buffers are activated when setting
+up the sequence number to replay the log. However, these are already
+protected by @console_sem and @syslog_lock. Remove the unnecessary
+safe buffer usage.
+
+Signed-off-by: John Ogness <john.ogness@linutronix.de>
+---
+ kernel/printk/printk.c | 10 +++-------
+ 1 file changed, 3 insertions(+), 7 deletions(-)
+
+diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
+index c553b235d068..aebc9e31b36a 100644
+--- a/kernel/printk/printk.c
++++ b/kernel/printk/printk.c
+@@ -2970,9 +2970,7 @@ void register_console(struct console *newcon)
+ 		/*
+ 		 * console_unlock(); will print out the buffered messages
+ 		 * for us.
+-		 */
+-		printk_safe_enter_irqsave(flags);
+-		/*
++		 *
+ 		 * We're about to replay the log buffer.  Only do this to the
+ 		 * just-registered console to avoid excessive message spam to
+ 		 * the already-registered consoles.
+@@ -2985,11 +2983,9 @@ void register_console(struct console *newcon)
+ 		exclusive_console_stop_seq = console_seq;
+ 
+ 		/* Get a consistent copy of @syslog_seq. */
+-		raw_spin_lock(&syslog_lock);
++		raw_spin_lock_irqsave(&syslog_lock, flags);
+ 		console_seq = syslog_seq;
+-		raw_spin_unlock(&syslog_lock);
+-
+-		printk_safe_exit_irqrestore(flags);
++		raw_spin_unlock_irqrestore(&syslog_lock, flags);
+ 	}
+ 	console_unlock();
+ 	console_sysfs_notify();
+-- 
+2.43.0
+