netfs: Adjust the netfs_failure tracepoint to indicate non-subreq lines

Adjust the netfs_failure tracepoint to indicate a subrequest number of -1
when it's a full-request failure unrelated to any particular subrequest,
such as a failure to encrypt its data buffer.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com

Link: https://lore.kernel.org/r/164623001948.3564931.2353852999649380059.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/164678204587.1200972.14893513018190383961.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/164692903233.2099075.15414355147237641274.stgit@warthog.procyon.org.uk/ # v3
This commit is contained in:
David Howells 2022-02-25 16:24:03 +00:00
parent 6cd3d6fd1f
commit 5c88705e2a

View File

@ -222,7 +222,7 @@ TRACE_EVENT(netfs_failure,
TP_STRUCT__entry(
__field(unsigned int, rreq )
__field(unsigned short, index )
__field(short, index )
__field(short, error )
__field(unsigned short, flags )
__field(enum netfs_io_source, source )
@ -234,17 +234,17 @@ TRACE_EVENT(netfs_failure,
TP_fast_assign(
__entry->rreq = rreq->debug_id;
__entry->index = sreq ? sreq->debug_index : 0;
__entry->index = sreq ? sreq->debug_index : -1;
__entry->error = error;
__entry->flags = sreq ? sreq->flags : 0;
__entry->source = sreq ? sreq->source : NETFS_INVALID_READ;
__entry->what = what;
__entry->len = sreq ? sreq->len : 0;
__entry->len = sreq ? sreq->len : rreq->len;
__entry->transferred = sreq ? sreq->transferred : 0;
__entry->start = sreq ? sreq->start : 0;
),
TP_printk("R=%08x[%u] %s f=%02x s=%llx %zx/%zx %s e=%d",
TP_printk("R=%08x[%d] %s f=%02x s=%llx %zx/%zx %s e=%d",
__entry->rreq, __entry->index,
__print_symbolic(__entry->source, netfs_sreq_sources),
__entry->flags,