1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _RUNTIME_INSTR_H
3 #define _RUNTIME_INSTR_H
4
5 #define S390_RUNTIME_INSTR_START 0x1
6 #define S390_RUNTIME_INSTR_STOP 0x2
7
8 struct runtime_instr_cb {
9 __u64 buf_current;
10 __u64 buf_origin;
11 __u64 buf_limit;
12
13 __u32 valid : 1;
14 __u32 pstate : 1;
15 __u32 pstate_set_buf : 1;
16 __u32 home_space : 1;
17 __u32 altered : 1;
18 __u32 : 3;
19 __u32 pstate_sample : 1;
20 __u32 sstate_sample : 1;
21 __u32 pstate_collect : 1;
22 __u32 sstate_collect : 1;
23 __u32 : 1;
24 __u32 halted_int : 1;
25 __u32 int_requested : 1;
26 __u32 buffer_full_int : 1;
27 __u32 key : 4;
28 __u32 : 9;
29 __u32 rgs : 3;
30
31 __u32 mode : 4;
32 __u32 next : 1;
33 __u32 mae : 1;
34 __u32 : 2;
35 __u32 call_type_br : 1;
36 __u32 return_type_br : 1;
37 __u32 other_type_br : 1;
38 __u32 bc_other_type : 1;
39 __u32 emit : 1;
40 __u32 tx_abort : 1;
41 __u32 : 2;
42 __u32 bp_xn : 1;
43 __u32 bp_xt : 1;
44 __u32 bp_ti : 1;
45 __u32 bp_ni : 1;
46 __u32 suppr_y : 1;
47 __u32 suppr_z : 1;
48
49 __u32 dc_miss_extra : 1;
50 __u32 lat_lev_ignore : 1;
51 __u32 ic_lat_lev : 4;
52 __u32 dc_lat_lev : 4;
53
54 __u64 reserved1;
55 __u64 scaling_factor;
56 __u64 rsic;
57 __u64 reserved2;
58 } __packed __aligned(8);
59
60 extern struct runtime_instr_cb runtime_instr_empty_cb;
61
load_runtime_instr_cb(struct runtime_instr_cb * cb)62 static inline void load_runtime_instr_cb(struct runtime_instr_cb *cb)
63 {
64 asm volatile(".insn rsy,0xeb0000000060,0,0,%0" /* LRIC */
65 : : "Q" (*cb));
66 }
67
store_runtime_instr_cb(struct runtime_instr_cb * cb)68 static inline void store_runtime_instr_cb(struct runtime_instr_cb *cb)
69 {
70 asm volatile(".insn rsy,0xeb0000000061,0,0,%0" /* STRIC */
71 : "=Q" (*cb) : : "cc");
72 }
73
save_ri_cb(struct runtime_instr_cb * cb_prev)74 static inline void save_ri_cb(struct runtime_instr_cb *cb_prev)
75 {
76 if (cb_prev)
77 store_runtime_instr_cb(cb_prev);
78 }
79
restore_ri_cb(struct runtime_instr_cb * cb_next,struct runtime_instr_cb * cb_prev)80 static inline void restore_ri_cb(struct runtime_instr_cb *cb_next,
81 struct runtime_instr_cb *cb_prev)
82 {
83 if (cb_next)
84 load_runtime_instr_cb(cb_next);
85 else if (cb_prev)
86 load_runtime_instr_cb(&runtime_instr_empty_cb);
87 }
88
89 struct task_struct;
90
91 void runtime_instr_release(struct task_struct *tsk);
92
93 #endif /* _RUNTIME_INSTR_H */
94