6 #include <linux/dim.h>
8 static int rdma_dim_step(struct dim *dim)  in rdma_dim_step()  argument
10 	if (dim->tune_state == DIM_GOING_RIGHT) {  in rdma_dim_step()
11 		if (dim->profile_ix == (RDMA_DIM_PARAMS_NUM_PROFILES - 1))  in rdma_dim_step()
13 		dim->profile_ix++;  in rdma_dim_step()
14 		dim->steps_right++;  in rdma_dim_step()
16 	if (dim->tune_state == DIM_GOING_LEFT) {  in rdma_dim_step()
17 		if (dim->profile_ix == 0)  in rdma_dim_step()
19 		dim->profile_ix--;  in rdma_dim_step()
20 		dim->steps_left++;  in rdma_dim_step()
44 static bool rdma_dim_decision(struct dim_stats *curr_stats, struct dim *dim)  in rdma_dim_decision()  argument
46 	int prev_ix = dim->profile_ix;  in rdma_dim_decision()
47 	u8 state = dim->tune_state;  in rdma_dim_decision()
53 						   &dim->prev_stats);  in rdma_dim_decision()
58 				dim->profile_ix = 0;  in rdma_dim_decision()
61 			dim_turn(dim);  in rdma_dim_decision()
64 			step_res = rdma_dim_step(dim);  in rdma_dim_decision()
66 				dim_turn(dim);  in rdma_dim_decision()
71 	dim->prev_stats = *curr_stats;  in rdma_dim_decision()
73 	return dim->profile_ix != prev_ix;  in rdma_dim_decision()
76 void rdma_dim(struct dim *dim, u64 completions)  in rdma_dim()  argument
78 	struct dim_sample *curr_sample = &dim->measuring_sample;  in rdma_dim()
84 				     &dim->measuring_sample);  in rdma_dim()
86 	switch (dim->state) {  in rdma_dim()
88 		nevents = curr_sample->event_ctr - dim->start_sample.event_ctr;  in rdma_dim()
91 		if (!dim_calc_stats(&dim->start_sample, curr_sample, &curr_stats))  in rdma_dim()
93 		if (rdma_dim_decision(&curr_stats, dim)) {  in rdma_dim()
94 			dim->state = DIM_APPLY_NEW_PROFILE;  in rdma_dim()
95 			schedule_work(&dim->work);  in rdma_dim()
100 		dim->state = DIM_MEASURE_IN_PROGRESS;  in rdma_dim()
103 					     &dim->start_sample);  in rdma_dim()