arch/s390/oprofile/hwsampler.h

   1 /*
   2  * CPUMF HW sampler functions and internal structures
   3  *
   4  *    Copyright IBM Corp. 2010
   5  *    Author(s): Heinz Graalfs <graalfs@de.ibm.com>
   6  */
   7
   8 #ifndef HWSAMPLER_H_
   9 #define HWSAMPLER_H_
  10
  11 #include <linux/workqueue.h>
  12 #include <asm/cpu_mf.h>
  13
  14 struct hws_ssctl_request_block     /* SET SAMPLING CONTROLS req block   */
  15 { /* bytes 0 - 7  Bit(s) */
  16         unsigned int s:1;           /* 0: maximum buffer indicator       */
  17         unsigned int h:1;           /* 1: part. level reserved for VM use*/
  18         unsigned long b2_53:52;     /* 2-53: zeros                       */
  19         unsigned int es:1;          /* 54: sampling enable control       */
  20         unsigned int b55_61:7;      /* 55-61: - zeros                    */
  21         unsigned int cs:1;          /* 62: sampling activation control   */
  22         unsigned int b63:1;         /* 63: zero                          */
  23         unsigned long interval;     /* 8-15: sampling interval           */
  24         unsigned long tear;         /* 16-23: TEAR contents              */
  25         unsigned long dear;         /* 24-31: DEAR contents              */
  26         /* 32-63:                                                        */
  27         unsigned long rsvrd1;       /* reserved                          */
  28         unsigned long rsvrd2;       /* reserved                          */
  29         unsigned long rsvrd3;       /* reserved                          */
  30         unsigned long rsvrd4;       /* reserved                          */
  31 };
  32
  33 struct hws_cpu_buffer {
  34         unsigned long first_sdbt;       /* @ of 1st SDB-Table for this CP*/
  35         unsigned long worker_entry;
  36         unsigned long sample_overflow;  /* taken from SDB ...            */
  37         struct hws_qsi_info_block qsi;
  38         struct hws_ssctl_request_block ssctl;
  39         struct work_struct worker;
  40         atomic_t ext_params;
  41         unsigned long req_alert;
  42         unsigned long loss_of_sample_data;
  43         unsigned long invalid_entry_address;
  44         unsigned long incorrect_sdbt_entry;
  45         unsigned long sample_auth_change_alert;
  46         unsigned int finish:1;
  47         unsigned int oom:1;
  48         unsigned int stop_mode:1;
  49 };
  50
  51 int hwsampler_setup(void);
  52 int hwsampler_shutdown(void);
  53 int hwsampler_allocate(unsigned long sdbt, unsigned long sdb);
  54 int hwsampler_deallocate(void);
  55 unsigned long hwsampler_query_min_interval(void);
  56 unsigned long hwsampler_query_max_interval(void);
  57 int hwsampler_start_all(unsigned long interval);
  58 int hwsampler_stop_all(void);
  59 int hwsampler_deactivate(unsigned int cpu);
  60 int hwsampler_activate(unsigned int cpu);
  61 unsigned long hwsampler_get_sample_overflow_count(unsigned int cpu);
  62
  63 #endif /*HWSAMPLER_H_*/