kernel/include/trace/events/rpcrdma.h, branch linux-rolling-lts

svcrdma: Handle device removal outside of the CM event handler

2024-09-20T23:31:03Z

Synchronously wait for all disconnects to complete to ensure the transports have divested all hardware resources before the underlying RDMA device can safely be removed. Reviewed-by: Sagi Grimberg Signed-off-by: Chuck Lever

rpcrdma: Trace connection registration and unregistration

2024-08-19T15:50:41Z

These new trace points record xarray indices and the time of endpoint registration and unregistration, to co-ordinate with device removal events. Signed-off-by: Chuck Lever Signed-off-by: Anna Schumaker

xprtrdma: Handle device removal outside of the CM event handler

2024-07-08T17:47:24Z

Wait for all disconnects to complete to ensure the transport has divested all of its hardware resources before the underlying RDMA device can be removed. Signed-off-by: Chuck Lever Reviewed-by: Sagi Grimberg Signed-off-by: Anna Schumaker

rpcrdma: Implement generic device removal

2024-07-08T17:47:24Z

Commit e87a911fed07 ("nvme-rdma: use ib_client API to detect device removal") explains the benefits of handling device removal outside of the CM event handler. Sketch in an IB device removal notification mechanism that can be used by both the client and server side RPC-over-RDMA transport implementations. Suggested-by: Sagi Grimberg Signed-off-by: Chuck Lever Reviewed-by: Sagi Grimberg Signed-off-by: Anna Schumaker

tracing/treewide: Remove second parameter of __assign_str()

2024-05-23T00:14:47Z

With the rework of how the __string() handles dynamic strings where it saves off the source string in field in the helper structure[1], the assignment of that value to the trace event field is stored in the helper value and does not need to be passed in again. This means that with: __string(field, mystring) Which use to be assigned with __assign_str(field, mystring), no longer needs the second parameter and it is unused. With this, __assign_str() will now only get a single parameter. There's over 700 users of __assign_str() and because coccinelle does not handle the TRACE_EVENT() macro I ended up using the following sed script: git grep -l __assign_str | while read a ; do sed -e 's/$__assign_str([^,]*[^ ,]$ *,[^;]*/\1)/' $a > /tmp/test-file; mv /tmp/test-file $a; done I then searched for __assign_str() that did not end with ';' as those were multi line assignments that the sed script above would fail to catch. Note, the same updates will need to be done for: __assign_str_len() __assign_rel_str() __assign_rel_str_len() I tested this with both an allmodconfig and an allyesconfig (build only for both). [1] https://lore.kernel.org/linux-trace-kernel/20240222211442.634192653@goodmis.org/ Link: https://lore.kernel.org/linux-trace-kernel/20240516133454.681ba6a0@rorschach.local.home Cc: Masami Hiramatsu Cc: Mathieu Desnoyers Cc: Linus Torvalds Cc: Julia Lawall Signed-off-by: Steven Rostedt (Google) Acked-by: Jani Nikula Acked-by: Christian König for the amdgpu parts. Acked-by: Thomas Hellström #for Acked-by: Rafael J. Wysocki # for thermal Acked-by: Takashi Iwai Acked-by: Darrick J. Wong # xfs Tested-by: Guenter Roeck

svcrdma: Move write_info for Reply chunks into struct svc_rdma_send_ctxt

2024-03-01T14:12:28Z

Since the RPC transaction's svc_rdma_send_ctxt will stay around for the duration of the RDMA Write operation, the write_info structure for the Reply chunk can reside in the request's svc_rdma_send_ctxt instead of being allocated separately. Signed-off-by: Chuck Lever

svcrdma: Copy construction of svc_rqst::rq_arg to rdma_read_complete()

2024-01-07T22:54:33Z

Once a set of RDMA Reads are complete, the Read completion handler will poke the transport to trigger a second call to svc_rdma_recvfrom(). recvfrom() will then merge the RDMA Read payloads with the previously received RPC header to form a completed RPC Call message. The new code is copied from the svc_rdma_process_read_list() path. A subsequent patch will make use of this code and remove the code that this was copied from (svc_rdma_rw.c). Signed-off-by: Chuck Lever

svcrdma: Update some svcrdma DMA-related tracepoints

2024-01-07T22:54:28Z

A send/recv_ctxt already records transport-related information in the cq.id, thus there is no need to record the IP addresses of the transport endpoints. Signed-off-by: Chuck Lever

svcrdma: DMA error tracepoints should report completion IDs

2024-01-07T22:54:28Z

Update the DMA error flow tracepoints to report the completion ID of the failing context. This ties the wait/failure to a particular operation or request, which is more useful than knowing only the failing transport. Signed-off-by: Chuck Lever

svcrdma: SQ error tracepoints should report completion IDs

2024-01-07T22:54:27Z

Update the Send Queue's error flow tracepoints to report the completion ID of the waiting or failing context. This ties the wait/failure to a particular operation or request, which is a little more useful than knowing only the transport that is about to close. Signed-off-by: Chuck Lever