diff options
Diffstat (limited to 'include/linux/dim.h')
| -rw-r--r-- | include/linux/dim.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/include/linux/dim.h b/include/linux/dim.h index aa9bdd47a648..aa69730c3b8d 100644 --- a/include/linux/dim.h +++ b/include/linux/dim.h @@ -82,6 +82,7 @@ struct dim_stats { * @prev_stats: Measured rates from previous iteration (for comparison) * @start_sample: Sampled data at start of current iteration * @work: Work to perform on action required + * @priv: A pointer to the struct that points to dim * @profile_ix: Current moderation profile * @mode: CQ period count mode * @tune_state: Algorithm tuning state (see below) @@ -95,6 +96,7 @@ struct dim { struct dim_sample start_sample; struct dim_sample measuring_sample; struct work_struct work; + void *priv; u8 profile_ix; u8 mode; u8 tune_state; @@ -363,4 +365,38 @@ struct dim_cq_moder net_dim_get_def_tx_moderation(u8 cq_period_mode); */ void net_dim(struct dim *dim, struct dim_sample end_sample); +/* RDMA DIM */ + +/* + * RDMA DIM profile: + * profile size must be of RDMA_DIM_PARAMS_NUM_PROFILES. + */ +#define RDMA_DIM_PARAMS_NUM_PROFILES 9 +#define RDMA_DIM_START_PROFILE 0 + +static const struct dim_cq_moder +rdma_dim_prof[RDMA_DIM_PARAMS_NUM_PROFILES] = { + {1, 0, 1, 0}, + {1, 0, 4, 0}, + {2, 0, 4, 0}, + {2, 0, 8, 0}, + {4, 0, 8, 0}, + {16, 0, 8, 0}, + {16, 0, 16, 0}, + {32, 0, 16, 0}, + {32, 0, 32, 0}, +}; + +/** + * rdma_dim - Runs the adaptive moderation. + * @dim: The moderation struct. + * @completions: The number of completions collected in this round. + * + * Each call to rdma_dim takes the latest amount of completions that + * have been collected and counts them as a new event. + * Once enough events have been collected the algorithm decides a new + * moderation level. + */ +void rdma_dim(struct dim *dim, u64 completions); + #endif /* DIM_H */ |