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kernel/linux-imx6_3.14.28/arch/s390/oprofile/hwsampler.h 2.41 KB
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  /*
   * CPUMF HW sampler functions and internal structures
   *
   *    Copyright IBM Corp. 2010
   *    Author(s): Heinz Graalfs <graalfs@de.ibm.com>
   */
  
  #ifndef HWSAMPLER_H_
  #define HWSAMPLER_H_
  
  #include <linux/workqueue.h>
  #include <asm/cpu_mf.h>
  
  struct hws_ssctl_request_block     /* SET SAMPLING CONTROLS req block   */
  { /* bytes 0 - 7  Bit(s) */
  	unsigned int s:1;           /* 0: maximum buffer indicator       */
  	unsigned int h:1;           /* 1: part. level reserved for VM use*/
  	unsigned long b2_53:52;     /* 2-53: zeros                       */
  	unsigned int es:1;          /* 54: sampling enable control       */
  	unsigned int b55_61:7;      /* 55-61: - zeros                    */
  	unsigned int cs:1;          /* 62: sampling activation control   */
  	unsigned int b63:1;         /* 63: zero                          */
  	unsigned long interval;     /* 8-15: sampling interval           */
  	unsigned long tear;         /* 16-23: TEAR contents              */
  	unsigned long dear;         /* 24-31: DEAR contents              */
  	/* 32-63:                                                        */
  	unsigned long rsvrd1;       /* reserved                          */
  	unsigned long rsvrd2;       /* reserved                          */
  	unsigned long rsvrd3;       /* reserved                          */
  	unsigned long rsvrd4;       /* reserved                          */
  };
  
  struct hws_cpu_buffer {
  	unsigned long first_sdbt;       /* @ of 1st SDB-Table for this CP*/
  	unsigned long worker_entry;
  	unsigned long sample_overflow;  /* taken from SDB ...            */
  	struct hws_qsi_info_block qsi;
  	struct hws_ssctl_request_block ssctl;
  	struct work_struct worker;
  	atomic_t ext_params;
  	unsigned long req_alert;
  	unsigned long loss_of_sample_data;
  	unsigned long invalid_entry_address;
  	unsigned long incorrect_sdbt_entry;
  	unsigned long sample_auth_change_alert;
  	unsigned int finish:1;
  	unsigned int oom:1;
  	unsigned int stop_mode:1;
  };
  
  int hwsampler_setup(void);
  int hwsampler_shutdown(void);
  int hwsampler_allocate(unsigned long sdbt, unsigned long sdb);
  int hwsampler_deallocate(void);
  unsigned long hwsampler_query_min_interval(void);
  unsigned long hwsampler_query_max_interval(void);
  int hwsampler_start_all(unsigned long interval);
  int hwsampler_stop_all(void);
  int hwsampler_deactivate(unsigned int cpu);
  int hwsampler_activate(unsigned int cpu);
  unsigned long hwsampler_get_sample_overflow_count(unsigned int cpu);
  
  #endif /*HWSAMPLER_H_*/