rsd.h

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#ifndef __RSD_H__
#define __RSD_H__

#include <linux/aquosa/qmgr_base.h>
#include <linux/aquosa/qos_queue.h>
#include <linux/aquosa/qos_l.h>

typedef long int fir_coeff_t;

#define FIR_COEFF_BITS 16

#define FIR_COEFF_ONE (1 << (FIR_COEFF_BITS))

typedef struct {
  fir_coeff_t *sum_prods;
  fir_coeff_t sum_prod;
} rsd_partial_t;

static inline fir_coeff_t fir_coeff_mul(fir_coeff_t x, fir_coeff_t y) {
  return l_mul_shr(x, y, FIR_COEFF_BITS);
}

static inline fir_coeff_t fir_coeff_div(fir_coeff_t x, fir_coeff_t y) {
  return l_shl_div(x, FIR_COEFF_BITS, y);
}

typedef struct rsd_params_struct {
  qmgr_pred_params_t base;      
  int sample_size;              
  int fir_size;                 
  fir_coeff_t mu;               
} rsd_params_t;

typedef struct rsd_struct {
  qmgr_pred_t base;     
  qos_queue_t queue;    
  int sample_size;      
  int fir_size;         
  fir_coeff_t *fir;     
  fir_coeff_t *dfir;    
  fir_coeff_t mu2;      
  rsd_partial_t *partials; 
  fir_coeff_t norm2;    
} rsd_t;

qos_rv rsd_register(void);

qos_rv rsd_init(void *self, void *params);

qos_rv rsd_final(qmgr_pred_t *self);

qos_rv rsd_add_sample(qmgr_pred_t *pred, qres_time_t new_sample);

qres_time_t rsd_get_exp_value(qmgr_pred_t *pred);

#endif

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