From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:57344 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2393986AbfJPOUv (ORCPT ); Wed, 16 Oct 2019 10:20:51 -0400 Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x9GE8WIC117149 for ; Wed, 16 Oct 2019 10:20:50 -0400 Received: from e06smtp07.uk.ibm.com (e06smtp07.uk.ibm.com [195.75.94.103]) by mx0a-001b2d01.pphosted.com with ESMTP id 2vp4q78g3f-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 16 Oct 2019 10:20:50 -0400 Received: from localhost by e06smtp07.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 16 Oct 2019 15:20:47 +0100 From: Eric Farman Subject: [PATCH v3 1/4] vfio-ccw: Refactor how the traces are built Date: Wed, 16 Oct 2019 16:20:37 +0200 In-Reply-To: <20191016142040.14132-1-farman@linux.ibm.com> References: <20191016142040.14132-1-farman@linux.ibm.com> Message-Id: <20191016142040.14132-2-farman@linux.ibm.com> Sender: linux-s390-owner@vger.kernel.org List-ID: To: Cornelia Huck , Halil Pasic Cc: Steffen Maier , Jason Herne , Jared Rossi , linux-s390@vger.kernel.org, kvm@vger.kernel.org, Eric Farman Commit 3cd90214b70f ("vfio: ccw: add tracepoints for interesting error paths") added a quick trace point to determine where a channel program failed while being processed. It's a great addition, but adding more traces to vfio-ccw is more cumbersome than it needs to be. Let's refactor how this is done, so that additional traces are easier to add and can exist outside of the FSM if we ever desire. Signed-off-by: Eric Farman Reviewed-by: Cornelia Huck --- drivers/s390/cio/Makefile | 4 ++-- drivers/s390/cio/vfio_ccw_cp.h | 1 + drivers/s390/cio/vfio_ccw_fsm.c | 3 --- drivers/s390/cio/vfio_ccw_trace.c | 12 ++++++++++++ drivers/s390/cio/vfio_ccw_trace.h | 2 ++ 5 files changed, 17 insertions(+), 5 deletions(-) create mode 100644 drivers/s390/cio/vfio_ccw_trace.c diff --git a/drivers/s390/cio/Makefile b/drivers/s390/cio/Makefile index f6a8db04177c..23eae4188876 100644 --- a/drivers/s390/cio/Makefile +++ b/drivers/s390/cio/Makefile @@ -5,7 +5,7 @@ # The following is required for define_trace.h to find ./trace.h CFLAGS_trace.o := -I$(src) -CFLAGS_vfio_ccw_fsm.o := -I$(src) +CFLAGS_vfio_ccw_trace.o := -I$(src) obj-y += airq.o blacklist.o chsc.o cio.o css.o chp.o idset.o isc.o \ fcx.o itcw.o crw.o ccwreq.o trace.o ioasm.o @@ -21,5 +21,5 @@ qdio-objs := qdio_main.o qdio_thinint.o qdio_debug.o qdio_setup.o obj-$(CONFIG_QDIO) += qdio.o vfio_ccw-objs += vfio_ccw_drv.o vfio_ccw_cp.o vfio_ccw_ops.o vfio_ccw_fsm.o \ - vfio_ccw_async.o + vfio_ccw_async.o vfio_ccw_trace.o obj-$(CONFIG_VFIO_CCW) += vfio_ccw.o diff --git a/drivers/s390/cio/vfio_ccw_cp.h b/drivers/s390/cio/vfio_ccw_cp.h index 7cdc38049033..ba31240ce965 100644 --- a/drivers/s390/cio/vfio_ccw_cp.h +++ b/drivers/s390/cio/vfio_ccw_cp.h @@ -15,6 +15,7 @@ #include #include "orb.h" +#include "vfio_ccw_trace.h" /* * Max length for ccw chain. diff --git a/drivers/s390/cio/vfio_ccw_fsm.c b/drivers/s390/cio/vfio_ccw_fsm.c index 4a1e727c62d9..d4119e4c4a8c 100644 --- a/drivers/s390/cio/vfio_ccw_fsm.c +++ b/drivers/s390/cio/vfio_ccw_fsm.c @@ -15,9 +15,6 @@ #include "ioasm.h" #include "vfio_ccw_private.h" -#define CREATE_TRACE_POINTS -#include "vfio_ccw_trace.h" - static int fsm_io_helper(struct vfio_ccw_private *private) { struct subchannel *sch; diff --git a/drivers/s390/cio/vfio_ccw_trace.c b/drivers/s390/cio/vfio_ccw_trace.c new file mode 100644 index 000000000000..d5cc943c6864 --- /dev/null +++ b/drivers/s390/cio/vfio_ccw_trace.c @@ -0,0 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Tracepoint definitions for vfio_ccw + * + * Copyright IBM Corp. 2019 + * Author(s): Eric Farman + */ + +#define CREATE_TRACE_POINTS +#include "vfio_ccw_trace.h" + +EXPORT_TRACEPOINT_SYMBOL(vfio_ccw_io_fctl); diff --git a/drivers/s390/cio/vfio_ccw_trace.h b/drivers/s390/cio/vfio_ccw_trace.h index b1da53ddec1f..2a2937a40124 100644 --- a/drivers/s390/cio/vfio_ccw_trace.h +++ b/drivers/s390/cio/vfio_ccw_trace.h @@ -7,6 +7,8 @@ * Halil Pasic */ +#include "cio.h" + #undef TRACE_SYSTEM #define TRACE_SYSTEM vfio_ccw -- 2.17.1