From nobody Wed Dec 17 10:45:14 2025 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2AE941D5ADA for ; Mon, 16 Dec 2024 20:48:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734382132; cv=none; b=MiZTO/gE46d44hxIk7Lrh0G8/BPKiCFot9KZ8HnhbO5weXe1IzpsdgedFQuKJitfYItG/NuAJwLOheWCVgZQ9wG3qIvwMzm/xGuQZdZWndkKJQQZ0hSig66oTZjYdorMLVqBFuX5Od4kNkS83vcgq1mh5+BjaO03GVp4XdK/mG4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734382132; c=relaxed/simple; bh=OTgo6y/iUbtT78QGPD0sssJss9B2yP/TOW1RhzQxkkk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=EIA8V3FG6atSLXG7dANO1Ij6GP9zcmBXAqfkpnKInvw+BVucRzNBfBn9xD2wEJYGdRrEsJDr97Pz3p8f1Ile1A0JOA39LmfnjgXzrBvg4wtFlldaNbQjGPc58ey07PnGqIKBGqj1T3ACI2RfqKTyZS0kbZcqXHJDevU/a1EOpQw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=BiRaXhM1; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="BiRaXhM1" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1734382130; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=+h5xevLUTgx7DT+yXa3KdTAzsT6twp0kWM1j+wkaZ80=; b=BiRaXhM1NwOoBYtvTNJPTkMpCN4SS8cFSjClWV6Y+kUo8l8mTnBo6J+HqjfjrIPkVLJALM fkQ+SsILGGlA/uTY2by4v7wetQ1xO0SrAPaR6nEc4EuX1KkKvhZmFb1FA3FkK/P9asyteh AkcwcJWnTKNCbBa79PTeHFpvFyV8LEg= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-37-8FHzIFyHP_G1A-tElrmP_g-1; Mon, 16 Dec 2024 15:43:29 -0500 X-MC-Unique: 8FHzIFyHP_G1A-tElrmP_g-1 X-Mimecast-MFC-AGG-ID: 8FHzIFyHP_G1A-tElrmP_g Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 173481956064; Mon, 16 Dec 2024 20:43:27 +0000 (UTC) Received: from warthog.procyon.org.com (unknown [10.42.28.48]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 79E3719560B0; Mon, 16 Dec 2024 20:43:21 +0000 (UTC) From: David Howells To: Christian Brauner , Steve French , Matthew Wilcox Cc: David Howells , Jeff Layton , Gao Xiang , Dominique Martinet , Marc Dionne , Paulo Alcantara , Shyam Prasad N , Tom Talpey , Eric Van Hensbergen , Ilya Dryomov , netfs@lists.linux.dev, linux-afs@lists.infradead.org, linux-cifs@vger.kernel.org, linux-nfs@vger.kernel.org, ceph-devel@vger.kernel.org, v9fs@lists.linux.dev, linux-erofs@lists.ozlabs.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 15/32] cachefiles: Add some subrequest tracepoints Date: Mon, 16 Dec 2024 20:41:05 +0000 Message-ID: <20241216204124.3752367-16-dhowells@redhat.com> In-Reply-To: <20241216204124.3752367-1-dhowells@redhat.com> References: <20241216204124.3752367-1-dhowells@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 Content-Type: text/plain; charset="utf-8" Add some tracepoints into the cachefiles write paths. Signed-off-by: David Howells cc: netfs@lists.linux.dev --- fs/cachefiles/io.c | 4 ++++ include/trace/events/netfs.h | 3 +++ 2 files changed, 7 insertions(+) diff --git a/fs/cachefiles/io.c b/fs/cachefiles/io.c index 6a821a959b59..92058ae43488 100644 --- a/fs/cachefiles/io.c +++ b/fs/cachefiles/io.c @@ -13,6 +13,7 @@ #include #include #include +#include #include "internal.h" =20 struct cachefiles_kiocb { @@ -366,6 +367,7 @@ static int cachefiles_write(struct netfs_cache_resource= s *cres, if (!fscache_wait_for_operation(cres, FSCACHE_WANT_WRITE)) { if (term_func) term_func(term_func_priv, -ENOBUFS, false); + trace_netfs_sreq(term_func_priv, netfs_sreq_trace_cache_nowrite); return -ENOBUFS; } =20 @@ -695,6 +697,7 @@ static void cachefiles_issue_write(struct netfs_io_subr= equest *subreq) iov_iter_truncate(&subreq->io_iter, len); } =20 + trace_netfs_sreq(subreq, netfs_sreq_trace_cache_prepare); cachefiles_begin_secure(cache, &saved_cred); ret =3D __cachefiles_prepare_write(object, cachefiles_cres_file(cres), &start, &len, len, true); @@ -704,6 +707,7 @@ static void cachefiles_issue_write(struct netfs_io_subr= equest *subreq) return; } =20 + trace_netfs_sreq(subreq, netfs_sreq_trace_cache_write); cachefiles_write(&subreq->rreq->cache_resources, subreq->start, &subreq->io_iter, netfs_write_subrequest_terminated, subreq); diff --git a/include/trace/events/netfs.h b/include/trace/events/netfs.h index 2dfc9f716e3b..02f6e179b7bc 100644 --- a/include/trace/events/netfs.h +++ b/include/trace/events/netfs.h @@ -74,6 +74,9 @@ #define netfs_sreq_traces \ EM(netfs_sreq_trace_add_donations, "+DON ") \ EM(netfs_sreq_trace_added, "ADD ") \ + EM(netfs_sreq_trace_cache_nowrite, "CA-NW") \ + EM(netfs_sreq_trace_cache_prepare, "CA-PR") \ + EM(netfs_sreq_trace_cache_write, "CA-WR") \ EM(netfs_sreq_trace_clear, "CLEAR") \ EM(netfs_sreq_trace_discard, "DSCRD") \ EM(netfs_sreq_trace_donate_to_prev, "DON-P") \