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| author |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2018-01-22 10:26:20 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-02-02 10:47:15 +0100 |
| commit | df2f815a7df7edb5335a3bdeee6a8f9f6f9c35c4 (patch) | |
| tree | 1c34d51f188f067ac6ccc0b8b4634612b74e524b /arch/s390/include/uapi/asm | |
| parent | s390/sysinfo: add and display licensed internal code identifier (diff) | |
| download | linux-dev-df2f815a7df7edb5335a3bdeee6a8f9f6f9c35c4.tar.xz linux-dev-df2f815a7df7edb5335a3bdeee6a8f9f6f9c35c4.zip | |
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: Eugene Syromyatnikov <evgsyr@gmail.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/uapi/asm')
| -rw-r--r-- | arch/s390/include/uapi/asm/runtime_instr.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/arch/s390/include/uapi/asm/runtime_instr.h b/arch/s390/include/uapi/asm/runtime_instr.h new file mode 100644 index 000000000000..45c9ec984e6b --- /dev/null +++ b/arch/s390/include/uapi/asm/runtime_instr.h @@ -0,0 +1,74 @@ +/* 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 */ |