1 files changed, 0 insertions, 64 deletions
diff --git a/debian/patches-rt/0134-printk-Avoid-false-positive-lockdep-report-for-legac.patch b/debian/patches-rt/0134-printk-Avoid-false-positive-lockdep-report-for-legac.patch
deleted file mode 100644
index 225e8db69..000000000
--- a/debian/patches-rt/0134-printk-Avoid-false-positive-lockdep-report-for-legac.patch
+++ /dev/null
@@ -1,64 +0,0 @@
-From: John Ogness <john.ogness@linutronix.de>
-Date: Mon, 11 Dec 2023 09:34:16 +0000
-Subject: [PATCH 134/134] printk: Avoid false positive lockdep report for
- legacy driver.
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.6/older/patches-6.6.7-rt18.tar.xz
-
-printk may invoke the legacy console driver from atomic context. This leads to
-a lockdep splat because the console driver will acquire a sleeping lock and the
-caller may also hold a spinning lock. This is noticed by lockdep on !PREEMPT_RT
-configurations because it will also lead to a problem on PREEMPT_RT.
-
-On PREEMPT_RT the atomic path is always avoided and the console driver is
-always invoked from a dedicated thread. Thus the lockdep splat is a false
-positive.
-
-Override the lock-context before invoking the console driver.
-
-Signed-off-by: John Ogness <john.ogness@linutronix.de>
-Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
----
- kernel/printk/printk.c |    9 ++++++++-
- 1 file changed, 8 insertions(+), 1 deletion(-)
-
---- a/kernel/printk/printk.c
-+++ b/kernel/printk/printk.c
-@@ -2817,6 +2817,8 @@ static void __console_unlock(void)
- 	up_console_sem();
- }
- 
-+static DEFINE_WAIT_OVERRIDE_MAP(printk_legacy_map, LD_WAIT_SLEEP);
-+
- #ifdef CONFIG_PRINTK
- 
- /*
-@@ -2985,7 +2987,7 @@ static bool console_emit_next_record(str
- 		/*
- 		 * On PREEMPT_RT this function is either in a thread or
- 		 * panic context. So there is no need for concern about
--		 * printk reentrance or handovers.
-+		 * printk reentrance, handovers, or lockdep complaints.
- 		 */
- 
- 		con->write(con, outbuf, pmsg.outbuf_len);
-@@ -3007,7 +3009,9 @@ static bool console_emit_next_record(str
- 		/* Do not trace print latency. */
- 		stop_critical_timings();
- 
-+		lock_map_acquire_try(&printk_legacy_map);
- 		con->write(con, outbuf, pmsg.outbuf_len);
-+		lock_map_release(&printk_legacy_map);
- 
- 		start_critical_timings();
- 
-@@ -3084,7 +3088,10 @@ static bool console_flush_all(bool do_co
- 			any_usable = true;
- 
- 			if (flags & CON_NBCON) {
-+
-+				lock_map_acquire_try(&printk_legacy_map);
- 				progress = nbcon_atomic_emit_next_record(con, handover, cookie);
-+				lock_map_release(&printk_legacy_map);
- 
- 				printk_seq = nbcon_seq_read(con);
- 			} else {