diff options
Diffstat (limited to 'debian/patches-rt/0011-printk-ringbuffer-Consider-committed-as-finalized-in.patch')
-rw-r--r-- | debian/patches-rt/0011-printk-ringbuffer-Consider-committed-as-finalized-in.patch | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/debian/patches-rt/0011-printk-ringbuffer-Consider-committed-as-finalized-in.patch b/debian/patches-rt/0011-printk-ringbuffer-Consider-committed-as-finalized-in.patch deleted file mode 100644 index 405969873c..0000000000 --- a/debian/patches-rt/0011-printk-ringbuffer-Consider-committed-as-finalized-in.patch +++ /dev/null @@ -1,62 +0,0 @@ -From: John Ogness <john.ogness@linutronix.de> -Date: Mon, 20 Nov 2023 12:46:35 +0100 -Subject: [PATCH 11/50] printk: ringbuffer: Consider committed as finalized in - panic -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.7/older/patches-6.7-rt6.tar.xz - -A descriptor in the committed state means the record does not yet -exist for the reader. However, for the panic CPU, committed -records should be handled as finalized records since they contain -message data in a consistent state and may contain additional -hints as to the cause of the panic. - -Add an exception for records in the commit state to not be -considered non-existing when reading from the panic CPU. - -Signed-off-by: John Ogness <john.ogness@linutronix.de> -Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> ---- - kernel/printk/printk_ringbuffer.c | 17 ++++++++++++++--- - 1 file changed, 14 insertions(+), 3 deletions(-) - ---- a/kernel/printk/printk_ringbuffer.c -+++ b/kernel/printk/printk_ringbuffer.c -@@ -1857,6 +1857,8 @@ static bool copy_data(struct prb_data_ri - * descriptor. However, it also verifies that the record is finalized and has - * the sequence number @seq. On success, 0 is returned. - * -+ * For the panic CPU, committed descriptors are also considered finalized. -+ * - * Error return values: - * -EINVAL: A finalized record with sequence number @seq does not exist. - * -ENOENT: A finalized record with sequence number @seq exists, but its data -@@ -1875,17 +1877,26 @@ static int desc_read_finalized_seq(struc - - /* - * An unexpected @id (desc_miss) or @seq mismatch means the record -- * does not exist. A descriptor in the reserved or committed state -- * means the record does not yet exist for the reader. -+ * does not exist. A descriptor in the reserved state means the -+ * record does not yet exist for the reader. - */ - if (d_state == desc_miss || - d_state == desc_reserved || -- d_state == desc_committed || - s != seq) { - return -EINVAL; - } - - /* -+ * A descriptor in the committed state means the record does not yet -+ * exist for the reader. However, for the panic CPU, committed -+ * records are also handled as finalized records since they contain -+ * message data in a consistent state and may contain additional -+ * hints as to the cause of the panic. -+ */ -+ if (d_state == desc_committed && !this_cpu_in_panic()) -+ return -EINVAL; -+ -+ /* - * A descriptor in the reusable state may no longer have its data - * available; report it as existing but with lost data. Or the record - * may actually be a record with lost data. |