diff options
Diffstat (limited to 'debian/patches-rt/0087-printk-use-seqcount_latch-for-clear_seq.patch')
| -rw-r--r-- | debian/patches-rt/0087-printk-use-seqcount_latch-for-clear_seq.patch | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/debian/patches-rt/0087-printk-use-seqcount_latch-for-clear_seq.patch b/debian/patches-rt/0087-printk-use-seqcount_latch-for-clear_seq.patch index f34000021..2dfd9bc86 100644 --- a/debian/patches-rt/0087-printk-use-seqcount_latch-for-clear_seq.patch +++ b/debian/patches-rt/0087-printk-use-seqcount_latch-for-clear_seq.patch @@ -1,8 +1,8 @@ -From 0b877c3f36fc909dc2aec9f70e2e80ad0c69a60b Mon Sep 17 00:00:00 2001 +From a0d38d824d92325e893d09a8b9bd48e74172917e Mon Sep 17 00:00:00 2001 From: John Ogness <john.ogness@linutronix.de> Date: Mon, 30 Nov 2020 01:41:58 +0106 Subject: [PATCH 087/323] printk: use seqcount_latch for clear_seq -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.204-rt100.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.215-rt107.tar.xz kmsg_dump_rewind_nolock() locklessly reads @clear_seq. However, this is not done atomically. Since @clear_seq is 64-bit, this @@ -18,7 +18,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> 1 file changed, 50 insertions(+), 8 deletions(-) diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c -index 1bc4ff19c0d2..4444b3e292d5 100644 +index 6db3c574e4aa8..d40bc4665f5c0 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -404,8 +404,21 @@ static u64 console_seq; @@ -124,7 +124,7 @@ index 1bc4ff19c0d2..4444b3e292d5 100644 logbuf_unlock_irq(); } -@@ -3341,7 +3383,7 @@ void kmsg_dump(enum kmsg_dump_reason reason) +@@ -3370,7 +3412,7 @@ void kmsg_dump(enum kmsg_dump_reason reason) dumper->active = true; logbuf_lock_irqsave(flags); @@ -133,7 +133,7 @@ index 1bc4ff19c0d2..4444b3e292d5 100644 dumper->next_seq = prb_next_seq(prb); logbuf_unlock_irqrestore(flags); -@@ -3539,7 +3581,7 @@ EXPORT_SYMBOL_GPL(kmsg_dump_get_buffer); +@@ -3568,7 +3610,7 @@ EXPORT_SYMBOL_GPL(kmsg_dump_get_buffer); */ void kmsg_dump_rewind_nolock(struct kmsg_dumper *dumper) { @@ -143,5 +143,5 @@ index 1bc4ff19c0d2..4444b3e292d5 100644 } -- -2.43.0 +2.44.0 |