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bnxt_re: Update the debug counters for doorbell pacing

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

Signed-off-by: Chandramohan Akula <chandramohan.akula@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://lore.kernel.org/r/1690383081-15033-5-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Chandramohan Akula 2023-07-26 07:51:21 -07:00 committed by Leon Romanovsky
parent 4405baf85a
commit 8b6573ff34
3 changed files with 32 additions and 0 deletions
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18
drivers/infiniband/hw/bnxt_re/hw_counters.c
View File

@ -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:

11
drivers/infiniband/hw/bnxt_re/hw_counters.h
View File

@ -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,

3
drivers/infiniband/hw/bnxt_re/main.c
View File

@ -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);