Commit 8b6573ff authored by Chandramohan Akula's avatar Chandramohan Akula Committed by Leon Romanovsky
Browse files

bnxt_re: Update the debug counters for doorbell pacing 



Add debug counters to track the Doorbell pacing events and report the
doorbell pacing debug stats.

Signed-off-by: default avatarChandramohan Akula <chandramohan.akula@broadcom.com>
Signed-off-by: default avatarSelvin Xavier <selvin.xavier@broadcom.com>
Link: https://lore.kernel.org/r/1690383081-15033-5-git-send-email-selvin.xavier@broadcom.com


Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
parent 4405baf8

drivers/infiniband/hw/bnxt_re/hw_counters.c

+18 −0
Original line number Diff line number Diff line
@@ -146,6 +146,10 @@ static const struct rdma_stat_desc bnxt_re_stat_descs[] = { 
	[BNXT_RE_TX_CNP].name                = "tx_cnp_pkts",

	[BNXT_RE_RX_CNP].name                = "rx_cnp_pkts",

	[BNXT_RE_RX_ECN].name                = "rx_ecn_marked_pkts",

	[BNXT_RE_PACING_RESCHED].name        = "pacing_reschedule",

	[BNXT_RE_PACING_CMPL].name           = "pacing_complete",

	[BNXT_RE_PACING_ALERT].name          = "pacing_alerts",

	[BNXT_RE_DB_FIFO_REG].name           = "db_fifo_register",

};



static void bnxt_re_copy_ext_stats(struct bnxt_re_dev *rdev,
@@ -278,6 +282,18 @@ static void bnxt_re_copy_err_stats(struct bnxt_re_dev *rdev, 
			err_s->res_oos_drop_count;

}



static void bnxt_re_copy_db_pacing_stats(struct bnxt_re_dev *rdev,

					 struct rdma_hw_stats *stats)

{

	struct bnxt_re_db_pacing_stats *pacing_s =  &rdev->stats.pacing;



	stats->value[BNXT_RE_PACING_RESCHED] = pacing_s->resched;

	stats->value[BNXT_RE_PACING_CMPL] = pacing_s->complete;

	stats->value[BNXT_RE_PACING_ALERT] = pacing_s->alerts;

	stats->value[BNXT_RE_DB_FIFO_REG] =

		readl(rdev->en_dev->bar0 + rdev->pacing.dbr_db_fifo_reg_off);

}



int bnxt_re_ib_get_hw_stats(struct ib_device *ibdev,

			    struct rdma_hw_stats *stats,

			    u32 port, int index)
@@ -350,6 +366,8 @@ int bnxt_re_ib_get_hw_stats(struct ib_device *ibdev, 
				goto done;

			}

		}

		if (rdev->pacing.dbr_pacing)

			bnxt_re_copy_db_pacing_stats(rdev, stats);

	}



done:

drivers/infiniband/hw/bnxt_re/hw_counters.h

+11 −0
Original line number Diff line number Diff line
@@ -129,11 +129,21 @@ enum bnxt_re_hw_stats { 
	BNXT_RE_TX_CNP,

	BNXT_RE_RX_CNP,

	BNXT_RE_RX_ECN,

	BNXT_RE_PACING_RESCHED,

	BNXT_RE_PACING_CMPL,

	BNXT_RE_PACING_ALERT,

	BNXT_RE_DB_FIFO_REG,

	BNXT_RE_NUM_EXT_COUNTERS

};



#define BNXT_RE_NUM_STD_COUNTERS (BNXT_RE_OUT_OF_SEQ_ERR + 1)



struct bnxt_re_db_pacing_stats {

	u64 resched;

	u64 complete;

	u64 alerts;

};



struct bnxt_re_res_cntrs {

	atomic_t qp_count;

	atomic_t rc_qp_count;
@@ -164,6 +174,7 @@ struct bnxt_re_rstat { 
struct bnxt_re_stats {

	struct bnxt_re_rstat            rstat;

	struct bnxt_re_res_cntrs        res;

	struct bnxt_re_db_pacing_stats  pacing;

};



struct rdma_hw_stats *bnxt_re_ib_alloc_hw_port_stats(struct ib_device *ibdev,

drivers/infiniband/hw/bnxt_re/main.c

+3 −0
Original line number Diff line number Diff line
@@ -533,6 +533,7 @@ static void bnxt_re_db_fifo_check(struct work_struct *work) 
		pacing_data->pacing_th * BNXT_RE_PACING_ALARM_TH_MULTIPLE;

	schedule_delayed_work(&rdev->dbq_pacing_work,

			      msecs_to_jiffies(rdev->pacing.dbq_pacing_time));

	rdev->stats.pacing.alerts++;

	mutex_unlock(&rdev->pacing.dbq_lock);

}
@@ -563,12 +564,14 @@ static void bnxt_re_pacing_timer_exp(struct work_struct *work) 
	pacing_data->do_pacing = max_t(u32, rdev->pacing.dbr_def_do_pacing, pacing_data->do_pacing);

	if (pacing_data->do_pacing <= rdev->pacing.dbr_def_do_pacing) {

		bnxt_re_set_default_pacing_data(rdev);

		rdev->stats.pacing.complete++;

		goto dbq_unlock;

	}



restart_timer:

	schedule_delayed_work(&rdev->dbq_pacing_work,

			      msecs_to_jiffies(rdev->pacing.dbq_pacing_time));

	rdev->stats.pacing.resched++;

dbq_unlock:

	rdev->pacing.do_pacing_save = pacing_data->do_pacing;

	mutex_unlock(&rdev->pacing.dbq_lock);