add at24 driver

hc

2023-11-06 15ade055295d13f95d49e3d99b09f3bbfb4a43e7

 kernel/kernel/time/jiffies.c
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@@ -74,7 +74,8 @@
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 	.max_cycles	= 10,
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 };
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-__cacheline_aligned_in_smp DEFINE_SEQLOCK(jiffies_lock);
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+__cacheline_aligned_in_smp DEFINE_RAW_SPINLOCK(jiffies_lock);
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+__cacheline_aligned_in_smp seqcount_t jiffies_seq;
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 #if (BITS_PER_LONG < 64)
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 u64 get_jiffies_64(void)
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@@ -83,9 +84,9 @@
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 	u64 ret;
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 	do {
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-		seq = read_seqbegin(&jiffies_lock);
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+		seq = read_seqcount_begin(&jiffies_seq);
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 		ret = jiffies_64;
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-	} while (read_seqretry(&jiffies_lock, seq));
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+	} while (read_seqcount_retry(&jiffies_seq, seq));
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 	return ret;
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 }
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 EXPORT_SYMBOL(get_jiffies_64);