diff options
| author | Mitesh Ahuja <mitesh.ahuja@emulex.com> | 2014-12-18 11:43:05 +0300 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2015-02-18 19:31:04 +0300 |
| commit | b4dbe8d52d08e5ed60c9d01efbcd7b8694cf4b9f (patch) | |
| tree | 0b76375dc4c59382a3b2126304f93bc24efe50d7 /drivers/infiniband/hw/ocrdma/ocrdma.h | |
| parent | a601dc77f8bf71818d679cbd97e953becb2a085e (diff) | |
| download | linux-b4dbe8d52d08e5ed60c9d01efbcd7b8694cf4b9f.tar.xz | |
RDMA/ocrdma: Add support for interrupt moderation
Add support for interrupt moderation for ocrdma device. Thresholds
for high interrupt rates are static values derived based on experimental
results.
Signed-off-by: Mitesh Ahuja <mitesh.ahuja@emulex.com>
Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/hw/ocrdma/ocrdma.h')
| -rw-r--r-- | drivers/infiniband/hw/ocrdma/ocrdma.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma.h b/drivers/infiniband/hw/ocrdma/ocrdma.h index 933b38af13f0..b9fee0ed32d2 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma.h +++ b/drivers/infiniband/hw/ocrdma/ocrdma.h @@ -55,6 +55,12 @@ #define OCRDMA_UVERBS(CMD_NAME) (1ull << IB_USER_VERBS_CMD_##CMD_NAME) #define convert_to_64bit(lo, hi) ((u64)hi << 32 | (u64)lo) +#define EQ_INTR_PER_SEC_THRSH_HI 150000 +#define EQ_INTR_PER_SEC_THRSH_LOW 100000 +#define EQ_AIC_MAX_EQD 20 +#define EQ_AIC_MIN_EQD 0 + +void ocrdma_eqd_set_task(struct work_struct *work); struct ocrdma_dev_attr { u8 fw_ver[32]; @@ -117,12 +123,19 @@ struct ocrdma_queue_info { bool created; }; +struct ocrdma_aic_obj { /* Adaptive interrupt coalescing (AIC) info */ + u32 prev_eqd; + u64 eq_intr_cnt; + u64 prev_eq_intr_cnt; +}; + struct ocrdma_eq { struct ocrdma_queue_info q; u32 vector; int cq_cnt; struct ocrdma_dev *dev; char irq_name[32]; + struct ocrdma_aic_obj aic_obj; }; struct ocrdma_mq { @@ -214,6 +227,7 @@ struct ocrdma_dev { struct ocrdma_eq *eq_tbl; int eq_cnt; + struct delayed_work eqd_work; u16 base_eqid; u16 max_eq; |