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[All] {WIP} The big bump to buildroot 2024.02.x

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j1nx
2024-03-01 07:54:30 +00:00
parent 24a7b5beb1
commit aa79231bf0
239 changed files with 803 additions and 1351 deletions
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76
buildroot-external/patches/linux/0112-printk-Adjust-mapping-for-32bit-seq-macros.patch Normal file
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@ -0,0 +1,76 @@
From a4d45e4dce8b5eccfdc372dec99b037447369ea8 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 7 Dec 2023 14:15:15 +0000
Subject: [PATCH 112/196] printk: Adjust mapping for 32bit seq macros
Note: This change only applies to 32bit architectures. On 64bit
architectures the macros are NOPs.
__ulseq_to_u64seq() computes the upper 32 bits of the passed
argument value (@ulseq). The upper bits are derived from a base
value (@rb_next_seq) in a way that assumes @ulseq represents a
64bit number that is less than or equal to @rb_next_seq.
Until now this mapping has been correct for all call sites. However,
in a follow-up commit, values of @ulseq will be passed in that are
higher than the base value. This requires a change to how the 32bit
value is mapped to a 64bit sequence number.
Rather than mapping @ulseq such that the base value is the end of a
32bit block, map @ulseq such that the base value is in the middle of
a 32bit block. This allows supporting 31 bits before and after the
base value, which is deemed acceptable for the console sequence
number during runtime.
Here is an example to illustrate the previous and new mappings.
For a base value (@rb_next_seq) of 2 2000 0000...
Before this change the range of possible return values was:
1 2000 0001 to 2 2000 0000
__ulseq_to_u64seq(1fff ffff) => 2 1fff ffff
__ulseq_to_u64seq(2000 0000) => 2 2000 0000
__ulseq_to_u64seq(2000 0001) => 1 2000 0001
__ulseq_to_u64seq(9fff ffff) => 1 9fff ffff
__ulseq_to_u64seq(a000 0000) => 1 a000 0000
__ulseq_to_u64seq(a000 0001) => 1 a000 0001
After this change the range of possible return values are:
1 a000 0001 to 2 a000 0000
__ulseq_to_u64seq(1fff ffff) => 2 1fff ffff
__ulseq_to_u64seq(2000 0000) => 2 2000 0000
__ulseq_to_u64seq(2000 0001) => 2 2000 0001
__ulseq_to_u64seq(9fff ffff) => 2 9fff ffff
__ulseq_to_u64seq(a000 0000) => 2 a000 0000
__ulseq_to_u64seq(a000 0001) => 1 a000 0001
[ john.ogness: Rewrite commit message. ]
Reported-by: Francesco Dolcini <francesco@dolcini.it>
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
kernel/printk/printk_ringbuffer.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/printk/printk_ringbuffer.h b/kernel/printk/printk_ringbuffer.h
index b82a96dc2ea2..12f60c782e46 100644
--- a/kernel/printk/printk_ringbuffer.h
+++ b/kernel/printk/printk_ringbuffer.h
@@ -407,7 +407,7 @@ static inline u64 __ulseq_to_u64seq(struct printk_ringbuffer *rb, u32 ulseq)
* 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);
+ seq = rb_next_seq - (s32)((u32)rb_next_seq - ulseq);
return seq;
}
--
2.43.2