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Commit df2f815a authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
Browse files

s390/runtime instrumentation: provide uapi header file 



The man page for the s390_runtime_instr() system call refers to a
header file that was never exported. Therefore it's time to finally
provide the header file, and move large parts of the runtime
instrumentation header file to a new uapi header file.

Reported-by: default avatarEugene Syromyatnikov <evgsyr@gmail.com>
Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 5260b0f5

arch/s390/include/asm/runtime_instr.h

+1 −66
Original line number Diff line number Diff line
@@ -2,75 +2,10 @@ 
#ifndef _RUNTIME_INSTR_H

#define _RUNTIME_INSTR_H



#define S390_RUNTIME_INSTR_START	0x1

#define S390_RUNTIME_INSTR_STOP		0x2



struct runtime_instr_cb {

	__u64 rca;

	__u64 roa;

	__u64 rla;



	__u32 v			: 1;

	__u32 s			: 1;

	__u32 k			: 1;

	__u32 h			: 1;

	__u32 a			: 1;

	__u32 reserved1		: 3;

	__u32 ps		: 1;

	__u32 qs		: 1;

	__u32 pc		: 1;

	__u32 qc		: 1;

	__u32 reserved2		: 1;

	__u32 g			: 1;

	__u32 u			: 1;

	__u32 l			: 1;

	__u32 key		: 4;

	__u32 reserved3		: 8;

	__u32 t			: 1;

	__u32 rgs		: 3;



	__u32 m			: 4;

	__u32 n			: 1;

	__u32 mae		: 1;

	__u32 reserved4		: 2;

	__u32 c			: 1;

	__u32 r			: 1;

	__u32 b			: 1;

	__u32 j			: 1;

	__u32 e			: 1;

	__u32 x			: 1;

	__u32 reserved5		: 2;

	__u32 bpxn		: 1;

	__u32 bpxt		: 1;

	__u32 bpti		: 1;

	__u32 bpni		: 1;

	__u32 reserved6		: 2;



	__u32 d			: 1;

	__u32 f			: 1;

	__u32 ic		: 4;

	__u32 dc		: 4;



	__u64 reserved7;

	__u64 sf;

	__u64 rsic;

	__u64 reserved8;

} __packed __aligned(8);

#include <uapi/asm/runtime_instr.h>



extern struct runtime_instr_cb runtime_instr_empty_cb;



static inline void load_runtime_instr_cb(struct runtime_instr_cb *cb)

{

	asm volatile(".insn	rsy,0xeb0000000060,0,0,%0"	/* LRIC */

		: : "Q" (*cb));

}



static inline void store_runtime_instr_cb(struct runtime_instr_cb *cb)

{

	asm volatile(".insn	rsy,0xeb0000000061,0,0,%0"	/* STRIC */

		: "=Q" (*cb) : : "cc");

}



static inline void save_ri_cb(struct runtime_instr_cb *cb_prev)

{

	if (cb_prev)

arch/s390/include/uapi/asm/runtime_instr.h

0 → 100644
+74 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

#ifndef _S390_UAPI_RUNTIME_INSTR_H

#define _S390_UAPI_RUNTIME_INSTR_H



#include <linux/types.h>



#define S390_RUNTIME_INSTR_START	0x1

#define S390_RUNTIME_INSTR_STOP		0x2



struct runtime_instr_cb {

	__u64 rca;

	__u64 roa;

	__u64 rla;



	__u32 v			: 1;

	__u32 s			: 1;

	__u32 k			: 1;

	__u32 h			: 1;

	__u32 a			: 1;

	__u32 reserved1		: 3;

	__u32 ps		: 1;

	__u32 qs		: 1;

	__u32 pc		: 1;

	__u32 qc		: 1;

	__u32 reserved2		: 1;

	__u32 g			: 1;

	__u32 u			: 1;

	__u32 l			: 1;

	__u32 key		: 4;

	__u32 reserved3		: 8;

	__u32 t			: 1;

	__u32 rgs		: 3;



	__u32 m			: 4;

	__u32 n			: 1;

	__u32 mae		: 1;

	__u32 reserved4		: 2;

	__u32 c			: 1;

	__u32 r			: 1;

	__u32 b			: 1;

	__u32 j			: 1;

	__u32 e			: 1;

	__u32 x			: 1;

	__u32 reserved5		: 2;

	__u32 bpxn		: 1;

	__u32 bpxt		: 1;

	__u32 bpti		: 1;

	__u32 bpni		: 1;

	__u32 reserved6		: 2;



	__u32 d			: 1;

	__u32 f			: 1;

	__u32 ic		: 4;

	__u32 dc		: 4;



	__u64 reserved7;

	__u64 sf;

	__u64 rsic;

	__u64 reserved8;

} __packed __aligned(8);



static inline void load_runtime_instr_cb(struct runtime_instr_cb *cb)

{

	asm volatile(".insn	rsy,0xeb0000000060,0,0,%0"	/* LRIC */

		: : "Q" (*cb));

}



static inline void store_runtime_instr_cb(struct runtime_instr_cb *cb)

{

	asm volatile(".insn	rsy,0xeb0000000061,0,0,%0"	/* STRIC */

		: "=Q" (*cb) : : "cc");

}



#endif /* _S390_UAPI_RUNTIME_INSTR_H */