tree 0e133410f9fb1335c41ef94ee5e8a822206c14bb
parent ea106722c76f08002b69a6983ed84dc18958ba48
author Andrew Hall <hall@fb.com> 1556304589 -0700
committer Alexei Starovoitov <ast@kernel.org> 1556330659 -0700

nbd: add tracepoints for send/receive timing

This adds four tracepoints to nbd, enabling separate tracing of payload
and header sending/receipt.

In the send path for headers that have already been sent, we also
explicitly initialize the handle so it can be referenced by the later
tracepoint.

Signed-off-by: Andrew Hall <hall@fb.com>
Signed-off-by: Matt Mullins <mmullins@fb.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>