修改内核路径

hc

2024-05-14 bedbef8ad3e75a304af6361af235302bcc61d06b

 kernel/include/uapi/linux/membarrier.h
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@@ -114,6 +114,26 @@
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  *                          If this command is not implemented by an
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  *                          architecture, -EINVAL is returned.
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  *                          Returns 0 on success.
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+ * @MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ:
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+ *                          Ensure the caller thread, upon return from
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+ *                          system call, that all its running thread
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+ *                          siblings have any currently running rseq
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+ *                          critical sections restarted if @flags
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+ *                          parameter is 0; if @flags parameter is
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+ *                          MEMBARRIER_CMD_FLAG_CPU,
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+ *                          then this operation is performed only
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+ *                          on CPU indicated by @cpu_id. If this command is
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+ *                          not implemented by an architecture, -EINVAL
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+ *                          is returned. A process needs to register its
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+ *                          intent to use the private expedited rseq
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+ *                          command prior to using it, otherwise
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+ *                          this command returns -EPERM.
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+ * @MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_RSEQ:
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+ *                          Register the process intent to use
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+ *                          MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ.
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+ *                          If this command is not implemented by an
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+ *                          architecture, -EINVAL is returned.
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+ *                          Returns 0 on success.
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  * @MEMBARRIER_CMD_SHARED:
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  *                          Alias to MEMBARRIER_CMD_GLOBAL. Provided for
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  *                          header backward compatibility.
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@@ -131,9 +151,15 @@
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 	MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED		= (1 << 4),
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 	MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE		= (1 << 5),
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 	MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE	= (1 << 6),
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+	MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ			= (1 << 7),
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+	MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_RSEQ		= (1 << 8),
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 	/* Alias for header backward compatibility. */
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 	MEMBARRIER_CMD_SHARED			= MEMBARRIER_CMD_GLOBAL,
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 };
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+enum membarrier_cmd_flag {
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+	MEMBARRIER_CMD_FLAG_CPU		= (1 << 0),
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+};
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+
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 #endif /* _UAPI_LINUX_MEMBARRIER_H */