1 files changed, 0 insertions, 102 deletions
diff --git a/debian/patches-rt/0084-printk-Reduce-pr_flush-pooling-time.patch b/debian/patches-rt/0084-printk-Reduce-pr_flush-pooling-time.patch
deleted file mode 100644
index 09d1d343f..000000000
--- a/debian/patches-rt/0084-printk-Reduce-pr_flush-pooling-time.patch
+++ /dev/null
@@ -1,102 +0,0 @@
-From: Petr Mladek <pmladek@suse.com>
-Date: Fri, 6 Oct 2023 10:21:51 +0200
-Subject: [PATCH 084/134] printk: Reduce pr_flush() pooling time
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.6/older/patches-6.6.7-rt18.tar.xz
-
-pr_flush() does not guarantee that all messages would really get flushed
-to the console. The best it could do is to wait with a given timeout.[*]
-
-The current interval 100ms for checking the progress might seem too
-long in some situations. For example, such delays are not appreciated
-during suspend and resume especially when the consoles have been flushed
-"long" time before the check.
-
-On the other hand, the sleeping wait might be useful in other situations.
-Especially, it would allow flushing the messages using printk kthreads
-on the same CPU[*].
-
-Use msleep(1) as a compromise.
-
-Also measure the time using jiffies. msleep() does not guarantee
-precise wakeup after the given delay. It might be much longer,
-especially for times < 20s. See Documentation/timers/timers-howto.rst
-for more details.
-
-Note that msecs_to_jiffies() already translates a negative value into
-an infinite timeout.
-
-[*] console_unlock() does not guarantee flushing the consoles since
-    the commit dbdda842fe96f893 ("printk: Add console owner and waiter
-    logic to load balance console writes").
-
-    It would be possible to guarantee it another way. For example,
-    the spinning might be enabled only when the console_lock has been
-    taken via console_trylock().
-
-    But the load balancing is helpful. And more importantly, the flush
-    with a timeout has been added as a preparation step for introducing
-    printk kthreads.
-
-Signed-off-by: Petr Mladek <pmladek@suse.com>
-Reviewed-by: John Ogness <john.ogness@linutronix.de>
-Link: https://lore.kernel.org/r/20231006082151.6969-3-pmladek@suse.com
-Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
----
- kernel/printk/printk.c |   26 +++++++++++++-------------
- 1 file changed, 13 insertions(+), 13 deletions(-)
-
---- a/kernel/printk/printk.c
-+++ b/kernel/printk/printk.c
-@@ -3742,7 +3742,8 @@ late_initcall(printk_late_init);
- /* If @con is specified, only wait for that console. Otherwise wait for all. */
- static bool __pr_flush(struct console *con, int timeout_ms, bool reset_on_progress)
- {
--	int remaining = timeout_ms;
-+	unsigned long timeout_jiffies = msecs_to_jiffies(timeout_ms);
-+	unsigned long remaining_jiffies = timeout_jiffies;
- 	struct console *c;
- 	u64 last_diff = 0;
- 	u64 printk_seq;
-@@ -3760,6 +3761,9 @@ static bool __pr_flush(struct console *c
- 	console_unlock();
- 
- 	for (;;) {
-+		unsigned long begin_jiffies;
-+		unsigned long slept_jiffies;
-+
- 		diff = 0;
- 
- 		/*
-@@ -3797,24 +3801,20 @@ static bool __pr_flush(struct console *c
- 		console_srcu_read_unlock(cookie);
- 
- 		if (diff != last_diff && reset_on_progress)
--			remaining = timeout_ms;
-+			remaining_jiffies = timeout_jiffies;
- 
- 		console_unlock();
- 
- 		/* Note: @diff is 0 if there are no usable consoles. */
--		if (diff == 0 || remaining == 0)
-+		if (diff == 0 || remaining_jiffies == 0)
- 			break;
- 
--		if (remaining < 0) {
--			/* no timeout limit */
--			msleep(100);
--		} else if (remaining < 100) {
--			msleep(remaining);
--			remaining = 0;
--		} else {
--			msleep(100);
--			remaining -= 100;
--		}
-+		/* msleep(1) might sleep much longer. Check time by jiffies. */
-+		begin_jiffies = jiffies;
-+		msleep(1);
-+		slept_jiffies = jiffies - begin_jiffies;
-+
-+		remaining_jiffies -= min(slept_jiffies, remaining_jiffies);
- 
- 		last_diff = diff;
- 	}