Adding debian version 6.7.7-1.debian/6.7.7-1

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

1 files changed, 141 insertions, 0 deletions

diff --git a/debian/patches-rt/0001-printk-nbcon-Relocate-32bit-seq-macros.patch b/debian/patches-rt/0001-printk-nbcon-Relocate-32bit-seq-macros.patch
new file mode 100644
index 0000000000..5de6d46854
--- /dev/null
+++ b/debian/patches-rt/0001-printk-nbcon-Relocate-32bit-seq-macros.patch
@@ -0,0 +1,141 @@
+From: John Ogness <john.ogness@linutronix.de>
+Date: Wed, 6 Dec 2023 12:01:56 +0000
+Subject: [PATCH 01/50] printk: nbcon: Relocate 32bit seq macros
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.7/older/patches-6.7-rt6.tar.xz
+
+The macros __seq_to_nbcon_seq() and __nbcon_seq_to_seq() are
+used to provide support for atomic handling of sequence numbers
+on 32bit systems. Until now this was only used by nbcon.c,
+which is why they were located in nbcon.c and include nbcon in
+the name.
+
+In a follow-up commit this functionality is also needed by
+printk_ringbuffer. Rather than duplicating the functionality,
+relocate the macros to printk_ringbuffer.h.
+
+Also, since the macros will be no longer nbcon-specific, rename
+them to __u64seq_to_ulseq() and __ulseq_to_u64seq().
+
+This does not result in any functional change.
+
+Signed-off-by: John Ogness <john.ogness@linutronix.de>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+---
+ kernel/printk/nbcon.c             |   41 +++-----------------------------------
+ kernel/printk/printk_ringbuffer.h |   33 ++++++++++++++++++++++++++++++
+ 2 files changed, 37 insertions(+), 37 deletions(-)
+
+--- a/kernel/printk/nbcon.c
++++ b/kernel/printk/nbcon.c
+@@ -140,39 +140,6 @@ static inline bool nbcon_state_try_cmpxc
+ 	return atomic_try_cmpxchg(&ACCESS_PRIVATE(con, nbcon_state), &cur->atom, new->atom);
+ }
+ 
+-#ifdef CONFIG_64BIT
+-
+-#define __seq_to_nbcon_seq(seq) (seq)
+-#define __nbcon_seq_to_seq(seq) (seq)
+-
+-#else /* CONFIG_64BIT */
+-
+-#define __seq_to_nbcon_seq(seq) ((u32)seq)
+-
+-static inline u64 __nbcon_seq_to_seq(u32 nbcon_seq)
+-{
+-	u64 seq;
+-	u64 rb_next_seq;
+-
+-	/*
+-	 * The provided sequence is only the lower 32 bits of the ringbuffer
+-	 * sequence. It needs to be expanded to 64bit. Get the next sequence
+-	 * number from the ringbuffer and fold it.
+-	 *
+-	 * Having a 32bit representation in the console is sufficient.
+-	 * If a console ever gets more than 2^31 records behind
+-	 * the ringbuffer then this is the least of the problems.
+-	 *
+-	 * Also the access to the ring buffer is always safe.
+-	 */
+-	rb_next_seq = prb_next_seq(prb);
+-	seq = rb_next_seq - ((u32)rb_next_seq - nbcon_seq);
+-
+-	return seq;
+-}
+-
+-#endif /* CONFIG_64BIT */
+-
+ /**
+  * nbcon_seq_read - Read the current console sequence
+  * @con:	Console to read the sequence of
+@@ -183,7 +150,7 @@ u64 nbcon_seq_read(struct console *con)
+ {
+ 	unsigned long nbcon_seq = atomic_long_read(&ACCESS_PRIVATE(con, nbcon_seq));
+ 
+-	return __nbcon_seq_to_seq(nbcon_seq);
++	return __ulseq_to_u64seq(prb, nbcon_seq);
+ }
+ 
+ /**
+@@ -204,7 +171,7 @@ void nbcon_seq_force(struct console *con
+ 	 */
+ 	u64 valid_seq = max_t(u64, seq, prb_first_valid_seq(prb));
+ 
+-	atomic_long_set(&ACCESS_PRIVATE(con, nbcon_seq), __seq_to_nbcon_seq(valid_seq));
++	atomic_long_set(&ACCESS_PRIVATE(con, nbcon_seq), __u64seq_to_ulseq(valid_seq));
+ 
+ 	/* Clear con->seq since nbcon consoles use con->nbcon_seq instead. */
+ 	con->seq = 0;
+@@ -223,11 +190,11 @@ void nbcon_seq_force(struct console *con
+  */
+ static void nbcon_seq_try_update(struct nbcon_context *ctxt, u64 new_seq)
+ {
+-	unsigned long nbcon_seq = __seq_to_nbcon_seq(ctxt->seq);
++	unsigned long nbcon_seq = __u64seq_to_ulseq(ctxt->seq);
+ 	struct console *con = ctxt->console;
+ 
+ 	if (atomic_long_try_cmpxchg(&ACCESS_PRIVATE(con, nbcon_seq), &nbcon_seq,
+-				    __seq_to_nbcon_seq(new_seq))) {
++				    __u64seq_to_ulseq(new_seq))) {
+ 		ctxt->seq = new_seq;
+ 	} else {
+ 		ctxt->seq = nbcon_seq_read(con);
+--- a/kernel/printk/printk_ringbuffer.h
++++ b/kernel/printk/printk_ringbuffer.h
+@@ -381,4 +381,37 @@ bool prb_read_valid_info(struct printk_r
+ u64 prb_first_valid_seq(struct printk_ringbuffer *rb);
+ u64 prb_next_seq(struct printk_ringbuffer *rb);
+ 
++#ifdef CONFIG_64BIT
++
++#define __u64seq_to_ulseq(u64seq) (u64seq)
++#define __ulseq_to_u64seq(rb, ulseq) (ulseq)
++
++#else /* CONFIG_64BIT */
++
++#define __u64seq_to_ulseq(u64seq) ((u32)u64seq)
++
++static inline u64 __ulseq_to_u64seq(struct printk_ringbuffer *rb, u32 ulseq)
++{
++	u64 seq;
++	u64 rb_next_seq;
++
++	/*
++	 * The provided sequence is only the lower 32 bits of the ringbuffer
++	 * sequence. It needs to be expanded to 64bit. Get the next sequence
++	 * number from the ringbuffer and fold it.
++	 *
++	 * Having a 32bit representation in the console is sufficient.
++	 * If a console ever gets more than 2^31 records behind
++	 * the ringbuffer then this is the least of the problems.
++	 *
++	 * Also the access to the ring buffer is always safe.
++	 */
++	rb_next_seq = prb_next_seq(rb);
++	seq = rb_next_seq - ((u32)rb_next_seq - ulseq);
++
++	return seq;
++}
++
++#endif /* CONFIG_64BIT */
++
+ #endif /* _KERNEL_PRINTK_RINGBUFFER_H */