linux-kernel - [PATCH v2 06/19] netfs: Adjust the netfs

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Message-ID: <164678199468.1200972.17275585970238114726.stgit@warthog.procyon.org.uk>
Date:   Tue, 08 Mar 2022 23:26:34 +0000
From:   David Howells <dhowells@...hat.com>
To:     linux-cachefs@...hat.com
Cc:     dhowells@...hat.com, Anna Schumaker <anna.schumaker@...app.com>,
        Steve French <sfrench@...ba.org>,
        Dominique Martinet <asmadeus@...ewreck.org>,
        Jeff Layton <jlayton@...hat.com>,
        David Wysochanski <dwysocha@...hat.com>,
        Ilya Dryomov <idryomov@...il.com>,
        Jeffle Xu <jefflexu@...ux.alibaba.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-afs@...ts.infradead.org, linux-nfs@...r.kernel.org,
        linux-cifs@...r.kernel.org, ceph-devel@...r.kernel.org,
        v9fs-developer@...ts.sourceforge.net,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 06/19] netfs: Adjust the netfs_rreq tracepoint slightly

Adjust the netfs_rreq tracepoint to include the origin of the request and
to increase the size of the "what trace" output strings by a character so
that "ENCRYPT" and "DECRYPT" will fit without abbreviation.

Signed-off-by: David Howells <dhowells@...hat.com>
cc: linux-cachefs@...hat.com

Link: https://lore.kernel.org/r/164622996715.3564931.4252319907990358129.stgit@warthog.procyon.org.uk/ # v1
---

 fs/netfs/read_helper.c       |    2 +-
 include/trace/events/netfs.h |   18 +++++++++---------
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/fs/netfs/read_helper.c b/fs/netfs/read_helper.c
index ef23ef9889d5..181aeda32649 100644
--- a/fs/netfs/read_helper.c
+++ b/fs/netfs/read_helper.c
@@ -181,7 +181,7 @@ static void netfs_rreq_do_write_to_cache(struct netfs_io_request *rreq)
 	struct iov_iter iter;
 	int ret;
 
-	trace_netfs_rreq(rreq, netfs_rreq_trace_write);
+	trace_netfs_rreq(rreq, netfs_rreq_trace_copy);
 
 	/* We don't want terminating writes trying to wake us up whilst we're
 	 * still going through the list.
diff --git a/include/trace/events/netfs.h b/include/trace/events/netfs.h
index 2d0665b416bf..daf171de2142 100644
--- a/include/trace/events/netfs.h
+++ b/include/trace/events/netfs.h
@@ -22,13 +22,13 @@
 	E_(netfs_read_trace_write_begin,	"WRITEBEGN")
 
 #define netfs_rreq_traces					\
-	EM(netfs_rreq_trace_assess,		"ASSESS")	\
-	EM(netfs_rreq_trace_done,		"DONE  ")	\
-	EM(netfs_rreq_trace_free,		"FREE  ")	\
-	EM(netfs_rreq_trace_resubmit,		"RESUBM")	\
-	EM(netfs_rreq_trace_unlock,		"UNLOCK")	\
-	EM(netfs_rreq_trace_unmark,		"UNMARK")	\
-	E_(netfs_rreq_trace_write,		"WRITE ")
+	EM(netfs_rreq_trace_assess,		"ASSESS ")	\
+	EM(netfs_rreq_trace_copy,		"COPY   ")	\
+	EM(netfs_rreq_trace_done,		"DONE   ")	\
+	EM(netfs_rreq_trace_free,		"FREE   ")	\
+	EM(netfs_rreq_trace_resubmit,		"RESUBMT")	\
+	EM(netfs_rreq_trace_unlock,		"UNLOCK ")	\
+	E_(netfs_rreq_trace_unmark,		"UNMARK ")
 
 #define netfs_sreq_sources					\
 	EM(NETFS_FILL_WITH_ZEROES,		"ZERO")		\
@@ -134,7 +134,7 @@ TRACE_EVENT(netfs_rreq,
 
 	    TP_STRUCT__entry(
 		    __field(unsigned int,		rreq		)
-		    __field(unsigned short,		flags		)
+		    __field(unsigned int,		flags		)
 		    __field(enum netfs_rreq_trace,	what		)
 			     ),
 
@@ -182,8 +182,8 @@ TRACE_EVENT(netfs_sreq,
 
 	    TP_printk("R=%08x[%u] %s %s f=%02x s=%llx %zx/%zx e=%d",
 		      __entry->rreq, __entry->index,
-		      __print_symbolic(__entry->what, netfs_sreq_traces),
 		      __print_symbolic(__entry->source, netfs_sreq_sources),
+		      __print_symbolic(__entry->what, netfs_sreq_traces),
 		      __entry->flags,
 		      __entry->start, __entry->transferred, __entry->len,
 		      __entry->error)