diff options
| author |   Michael J. Ruhl <michael.j.ruhl@intel.com> | 2019-12-19 16:19:28 -0500 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2020-01-03 16:44:50 -0400 |
| commit | 44ec5aa3c6158122412b3018fdea1474edf0898e (patch) | |
| tree | d66038768f6a89fe0993a05e554e666028f1c123 /drivers/infiniband/hw | |
| parent | IB/hfi1: Add accessor API routines to access context members (diff) | |
| download | linux-dev-44ec5aa3c6158122412b3018fdea1474edf0898e.tar.xz linux-dev-44ec5aa3c6158122412b3018fdea1474edf0898e.zip | |
IB/hfi1: List all receive contexts from debugfs
The current debugfs output for receive contexts (rcds), stops after the
kernel receive contexts have been displayed. This is not enough
information to fully diagnose packet drops.
Display all of the receive contexts.
Augment the output with some more context information.
Limit the ring buffer header output to 5 entries to avoid overextending
the sequential file output.
Fixes: bf808b5039c ("IB/hfi1: Add kernel receive context info to debugfs")
Link: https://lore.kernel.org/r/20191219211928.58387.20737.stgit@awfm-01.aw.intel.com
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/hw')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/debugfs.c | 2 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/driver.c | 12 |
2 files changed, 10 insertions, 4 deletions
diff --git a/drivers/infiniband/hw/hfi1/debugfs.c b/drivers/infiniband/hw/hfi1/debugfs.c index d268bf9c42ee..4633a0ce1a8c 100644 --- a/drivers/infiniband/hw/hfi1/debugfs.c +++ b/drivers/infiniband/hw/hfi1/debugfs.c @@ -379,7 +379,7 @@ static void *_rcds_seq_next(struct seq_file *s, void *v, loff_t *pos) struct hfi1_devdata *dd = dd_from_dev(ibd); ++*pos; - if (!dd->rcd || *pos >= dd->n_krcv_queues) + if (!dd->rcd || *pos >= dd->num_rcv_contexts) return NULL; return pos; } diff --git a/drivers/infiniband/hw/hfi1/driver.c b/drivers/infiniband/hw/hfi1/driver.c index cbc521930900..8374922ea6e5 100644 --- a/drivers/infiniband/hw/hfi1/driver.c +++ b/drivers/infiniband/hw/hfi1/driver.c @@ -1726,23 +1726,29 @@ static int process_receive_invalid(struct hfi1_packet *packet) return RHF_RCV_CONTINUE; } +#define HFI1_RCVHDR_DUMP_MAX 5 + void seqfile_dump_rcd(struct seq_file *s, struct hfi1_ctxtdata *rcd) { struct hfi1_packet packet; struct ps_mdata mdata; + int i; - seq_printf(s, "Rcd %u: RcvHdr cnt %u entsize %u %s head %llu tail %llu\n", + seq_printf(s, "Rcd %u: RcvHdr cnt %u entsize %u %s ctrl 0x%08llx status 0x%08llx, head %llu tail %llu sw head %u\n", rcd->ctxt, get_hdrq_cnt(rcd), get_hdrqentsize(rcd), get_dma_rtail_setting(rcd) ? "dma_rtail" : "nodma_rtail", + read_kctxt_csr(rcd->dd, rcd->ctxt, RCV_CTXT_CTRL), + read_kctxt_csr(rcd->dd, rcd->ctxt, RCV_CTXT_STATUS), read_uctxt_csr(rcd->dd, rcd->ctxt, RCV_HDR_HEAD) & RCV_HDR_HEAD_HEAD_MASK, - read_uctxt_csr(rcd->dd, rcd->ctxt, RCV_HDR_TAIL)); + read_uctxt_csr(rcd->dd, rcd->ctxt, RCV_HDR_TAIL), + rcd->head); init_packet(rcd, &packet); init_ps_mdata(&mdata, &packet); - while (1) { + for (i = 0; i < HFI1_RCVHDR_DUMP_MAX; i++) { __le32 *rhf_addr = (__le32 *)rcd->rcvhdrq + mdata.ps_head + rcd->rhf_offset; struct ib_header *hdr; |