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| author | Chuck Lever <chuck.lever@oracle.com> | 2020-08-17 16:53:16 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2020-08-25 01:41:41 +0300 |
| commit | 75874b3d50717ec6a821cf4de4284822204a3574 (patch) | |
| tree | 3687242190c62b1b9e3b1ca9a2169761ea28d68f /drivers/infiniband/core/cm_trace.c | |
| parent | b3d03daa7cd19a91266dc2cea3587dcf60e7a1f0 (diff) | |
| download | linux-75874b3d50717ec6a821cf4de4284822204a3574.tar.xz | |
RDMA/cm: Replace pr_debug() call sites with tracepoints
In the interest of converging on a common instrumentation infrastructure,
modernize the pr_debug() call sites added by commit 119bf81793ea ("IB/cm:
Add debug prints to ib_cm"). The new tracepoints appear in a new "ib_cma"
subsystem.
The conversion is somewhat mechanical. Someone more familiar with the
semantics of the recorded information might suggest additional data
capture.
Some benefits include:
- Tracepoints enable "always on" reporting of these errors
- The error records are structured and compact
- Tracepoints provide hooks for eBPF scripts
Sample output:
nfsd-1954 [003] 62.017901: icm_dreq_skipped: local_id=1998890974 remote_id=1129750393 state=DREQ_RCVD lap_state=LAP_UNINIT
Link: https://lore.kernel.org/r/159767239665.2968.10613294222688696646.stgit@klimt.1015granger.net
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/core/cm_trace.c')
| -rw-r--r-- | drivers/infiniband/core/cm_trace.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/infiniband/core/cm_trace.c b/drivers/infiniband/core/cm_trace.c new file mode 100644 index 000000000000..8f3482f66338 --- /dev/null +++ b/drivers/infiniband/core/cm_trace.c @@ -0,0 +1,15 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Trace points for the IB Connection Manager. + * + * Author: Chuck Lever <chuck.lever@oracle.com> + * + * Copyright (c) 2020, Oracle and/or its affiliates. + */ + +#include <rdma/rdma_cm.h> +#include "cma_priv.h" + +#define CREATE_TRACE_POINTS + +#include "cm_trace.h" |