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kernel/linux-rt-4.4.41/arch/s390/include/asm/runtime_instr.h 1.86 KB
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  #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 buf_current;
  	__u64 buf_origin;
  	__u64 buf_limit;
  
  	__u32 valid		: 1;
  	__u32 pstate		: 1;
  	__u32 pstate_set_buf	: 1;
  	__u32 home_space	: 1;
  	__u32 altered		: 1;
  	__u32			: 3;
  	__u32 pstate_sample	: 1;
  	__u32 sstate_sample	: 1;
  	__u32 pstate_collect	: 1;
  	__u32 sstate_collect	: 1;
  	__u32			: 1;
  	__u32 halted_int	: 1;
  	__u32 int_requested	: 1;
  	__u32 buffer_full_int	: 1;
  	__u32 key		: 4;
  	__u32			: 9;
  	__u32 rgs		: 3;
  
  	__u32 mode		: 4;
  	__u32 next		: 1;
  	__u32 mae		: 1;
  	__u32			: 2;
  	__u32 call_type_br	: 1;
  	__u32 return_type_br	: 1;
  	__u32 other_type_br	: 1;
  	__u32 bc_other_type	: 1;
  	__u32 emit		: 1;
  	__u32 tx_abort		: 1;
  	__u32			: 2;
  	__u32 bp_xn		: 1;
  	__u32 bp_xt		: 1;
  	__u32 bp_ti		: 1;
  	__u32 bp_ni		: 1;
  	__u32 suppr_y		: 1;
  	__u32 suppr_z		: 1;
  
  	__u32 dc_miss_extra	: 1;
  	__u32 lat_lev_ignore	: 1;
  	__u32 ic_lat_lev	: 4;
  	__u32 dc_lat_lev	: 4;
  
  	__u64 reserved1;
  	__u64 scaling_factor;
  	__u64 rsic;
  	__u64 reserved2;
  } __packed __aligned(8);
  
  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)
  		store_runtime_instr_cb(cb_prev);
  }
  
  static inline void restore_ri_cb(struct runtime_instr_cb *cb_next,
  				 struct runtime_instr_cb *cb_prev)
  {
  	if (cb_next)
  		load_runtime_instr_cb(cb_next);
  	else if (cb_prev)
  		load_runtime_instr_cb(&runtime_instr_empty_cb);
  }
  
  void exit_thread_runtime_instr(void);
  
  #endif /* _RUNTIME_INSTR_H */