arch/s390/include/asm/runtime_instr.h

   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
  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
  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
  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
  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 */