The lpfc_cmf_timer adjusts phba->cmf_link_byte_count periodically and can artifically inflate bandwidth percent. During bandwidth calculation, correct for this by setting a cap of logging a maximum of 100%. Bandwidth calculation is only used for display under LOG_CGN_MGMT so there is no expectation of impacts on performance. Signed-off-by: Justin Tee <justin.tee@xxxxxxxxxxxx> --- drivers/scsi/lpfc/lpfc_sli.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index d25afc9dde14..a66026432572 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -1848,6 +1848,12 @@ lpfc_cmf_sync_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, phba->cmf_link_byte_count); bwpcent = div64_u64(bw * 100 + slop, phba->cmf_link_byte_count); + /* Because of bytes adjustment due to shorter timer in + * lpfc_cmf_timer() the cmf_link_byte_count can be shorter and + * may seem like BW is above 100%. + */ + if (bwpcent > 100) + bwpcent = 100; if (phba->cmf_max_bytes_per_interval < bw && bwpcent > 95) -- 2.38.0
