rk3568 rt init

hc

2023-11-06 e3e12f52b214121840b44c91de5b3e5af5d3eb84

 kernel/crypto/scompress.c
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@@ -24,6 +24,7 @@
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 #include <linux/cryptouser.h>
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 #include <net/netlink.h>
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 #include <linux/scatterlist.h>
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+#include <linux/locallock.h>
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 #include <crypto/scatterwalk.h>
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 #include <crypto/internal/acompress.h>
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 #include <crypto/internal/scompress.h>
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@@ -34,6 +35,7 @@
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 static void * __percpu *scomp_dst_scratches;
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 static int scomp_scratch_users;
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 static DEFINE_MUTEX(scomp_lock);
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+static DEFINE_LOCAL_IRQ_LOCK(scomp_scratches_lock);
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 #ifdef CONFIG_NET
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 static int crypto_scomp_report(struct sk_buff *skb, struct crypto_alg *alg)
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@@ -146,7 +148,7 @@
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 	void **tfm_ctx = acomp_tfm_ctx(tfm);
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 	struct crypto_scomp *scomp = *tfm_ctx;
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 	void **ctx = acomp_request_ctx(req);
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-	const int cpu = get_cpu();
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+	const int cpu = local_lock_cpu(scomp_scratches_lock);
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 	u8 *scratch_src = *per_cpu_ptr(scomp_src_scratches, cpu);
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 	u8 *scratch_dst = *per_cpu_ptr(scomp_dst_scratches, cpu);
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 	int ret;
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@@ -181,7 +183,7 @@
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 					 1);
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 	}
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 out:
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-	put_cpu();
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+	local_unlock_cpu(scomp_scratches_lock);
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 	return ret;
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 }
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