Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #ifndef __S390_VDSO_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define __S390_VDSO_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <vdso/datapage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) /* Default link addresses for the vDSOs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #define VDSO32_LBASE	0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #define VDSO64_LBASE	0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define VDSO_VERSION_STRING	LINUX_2.6.29
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #ifndef __ASSEMBLY__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  * Note about the vdso_data and vdso_per_cpu_data structures:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  * NEVER USE THEM IN USERSPACE CODE DIRECTLY. The layout of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  * structure is supposed to be known only to the function in the vdso
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)  * itself and may change without notice.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) struct vdso_per_cpu_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	 * Note: node_id and cpu_nr must be at adjacent memory locations.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	 * VDSO userspace must read both values with a single instruction.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		__u64 getcpu_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 			__u32 node_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 			__u32 cpu_nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) extern struct vdso_data *vdso_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) int vdso_alloc_per_cpu(struct lowcore *lowcore);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) void vdso_free_per_cpu(struct lowcore *lowcore);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #endif /* __ASSEMBLY__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #endif /* __S390_VDSO_H__ */