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Message-Id: <20221104142007.1314999-4-farman@linux.ibm.com>
Date: Fri, 4 Nov 2022 15:20:03 +0100
From: Eric Farman <farman@...ux.ibm.com>
To: Matthew Rosato <mjrosato@...ux.ibm.com>,
Alex Williamson <alex.williamson@...hat.com>,
Cornelia Huck <cohuck@...hat.com>,
Jason Gunthorpe <jgg@...dia.com>,
Kevin Tian <kevin.tian@...el.com>, Yi Liu <yi.l.liu@...el.com>
Cc: Zhenyu Wang <zhenyuw@...ux.intel.com>,
Zhi Wang <zhi.a.wang@...el.com>,
Jani Nikula <jani.nikula@...ux.intel.com>,
Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
Rodrigo Vivi <rodrigo.vivi@...el.com>,
Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>,
Halil Pasic <pasic@...ux.ibm.com>,
Vineeth Vijayan <vneethv@...ux.ibm.com>,
Peter Oberparleiter <oberpar@...ux.ibm.com>,
Heiko Carstens <hca@...ux.ibm.com>,
Vasily Gorbik <gor@...ux.ibm.com>,
Alexander Gordeev <agordeev@...ux.ibm.com>,
Christian Borntraeger <borntraeger@...ux.ibm.com>,
Sven Schnelle <svens@...ux.ibm.com>,
Tony Krowiak <akrowiak@...ux.ibm.com>,
Jason Herne <jjherne@...ux.ibm.com>,
Harald Freudenberger <freude@...ux.ibm.com>,
Diana Craciun <diana.craciun@....nxp.com>,
Eric Auger <eric.auger@...hat.com>,
Kirti Wankhede <kwankhede@...dia.com>,
Abhishek Sahu <abhsahu@...dia.com>,
Yishai Hadas <yishaih@...dia.com>,
intel-gvt-dev@...ts.freedesktop.org,
intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org,
kvm@...r.kernel.org, Eric Farman <farman@...ux.ibm.com>
Subject: [PATCH v3 3/7] vfio/ccw: move private initialization to callback
There's already a device initialization callback that is used to
initialize the release completion workaround that was introduced
by commit ebb72b765fb49 ("vfio/ccw: Use the new device life cycle
helpers").
Move the other elements of the vfio_ccw_private struct that
require distinct initialization over to that routine.
With that done, the vfio_ccw_alloc_private routine only does a
kzalloc, so fold it inline.
Signed-off-by: Eric Farman <farman@...ux.ibm.com>
Reviewed-by: Matthew Rosato <mjrosato@...ux.ibm.com>
---
drivers/s390/cio/vfio_ccw_drv.c | 74 ++++-------------------------
drivers/s390/cio/vfio_ccw_ops.c | 43 +++++++++++++++++
drivers/s390/cio/vfio_ccw_private.h | 7 ++-
3 files changed, 58 insertions(+), 66 deletions(-)
diff --git a/drivers/s390/cio/vfio_ccw_drv.c b/drivers/s390/cio/vfio_ccw_drv.c
index 2c680a556383..fbc26338ceab 100644
--- a/drivers/s390/cio/vfio_ccw_drv.c
+++ b/drivers/s390/cio/vfio_ccw_drv.c
@@ -23,10 +23,10 @@
#include "vfio_ccw_private.h"
struct workqueue_struct *vfio_ccw_work_q;
-static struct kmem_cache *vfio_ccw_io_region;
-static struct kmem_cache *vfio_ccw_cmd_region;
-static struct kmem_cache *vfio_ccw_schib_region;
-static struct kmem_cache *vfio_ccw_crw_region;
+struct kmem_cache *vfio_ccw_io_region;
+struct kmem_cache *vfio_ccw_cmd_region;
+struct kmem_cache *vfio_ccw_schib_region;
+struct kmem_cache *vfio_ccw_crw_region;
debug_info_t *vfio_ccw_debug_msg_id;
debug_info_t *vfio_ccw_debug_trace_id;
@@ -79,7 +79,7 @@ int vfio_ccw_sch_quiesce(struct subchannel *sch)
return ret;
}
-static void vfio_ccw_sch_io_todo(struct work_struct *work)
+void vfio_ccw_sch_io_todo(struct work_struct *work)
{
struct vfio_ccw_private *private;
struct irb *irb;
@@ -115,7 +115,7 @@ static void vfio_ccw_sch_io_todo(struct work_struct *work)
eventfd_signal(private->io_trigger, 1);
}
-static void vfio_ccw_crw_todo(struct work_struct *work)
+void vfio_ccw_crw_todo(struct work_struct *work)
{
struct vfio_ccw_private *private;
@@ -152,62 +152,6 @@ static void vfio_ccw_sch_irq(struct subchannel *sch)
vfio_ccw_fsm_event(private, VFIO_CCW_EVENT_INTERRUPT);
}
-static struct vfio_ccw_private *vfio_ccw_alloc_private(struct subchannel *sch)
-{
- struct vfio_ccw_private *private;
-
- private = kzalloc(sizeof(*private), GFP_KERNEL);
- if (!private)
- return ERR_PTR(-ENOMEM);
-
- mutex_init(&private->io_mutex);
- private->state = VFIO_CCW_STATE_STANDBY;
- INIT_LIST_HEAD(&private->crw);
- INIT_WORK(&private->io_work, vfio_ccw_sch_io_todo);
- INIT_WORK(&private->crw_work, vfio_ccw_crw_todo);
-
- private->cp.guest_cp = kcalloc(CCWCHAIN_LEN_MAX, sizeof(struct ccw1),
- GFP_KERNEL);
- if (!private->cp.guest_cp)
- goto out_free_private;
-
- private->io_region = kmem_cache_zalloc(vfio_ccw_io_region,
- GFP_KERNEL | GFP_DMA);
- if (!private->io_region)
- goto out_free_cp;
-
- private->cmd_region = kmem_cache_zalloc(vfio_ccw_cmd_region,
- GFP_KERNEL | GFP_DMA);
- if (!private->cmd_region)
- goto out_free_io;
-
- private->schib_region = kmem_cache_zalloc(vfio_ccw_schib_region,
- GFP_KERNEL | GFP_DMA);
-
- if (!private->schib_region)
- goto out_free_cmd;
-
- private->crw_region = kmem_cache_zalloc(vfio_ccw_crw_region,
- GFP_KERNEL | GFP_DMA);
-
- if (!private->crw_region)
- goto out_free_schib;
- return private;
-
-out_free_schib:
- kmem_cache_free(vfio_ccw_schib_region, private->schib_region);
-out_free_cmd:
- kmem_cache_free(vfio_ccw_cmd_region, private->cmd_region);
-out_free_io:
- kmem_cache_free(vfio_ccw_io_region, private->io_region);
-out_free_cp:
- kfree(private->cp.guest_cp);
-out_free_private:
- mutex_destroy(&private->io_mutex);
- kfree(private);
- return ERR_PTR(-ENOMEM);
-}
-
static void vfio_ccw_free_private(struct vfio_ccw_private *private)
{
struct vfio_ccw_crw *crw, *temp;
@@ -257,10 +201,10 @@ static int vfio_ccw_sch_probe(struct subchannel *sch)
if (ret)
goto out_free;
- private = vfio_ccw_alloc_private(sch);
- if (IS_ERR(private)) {
+ private = kzalloc(sizeof(*private), GFP_KERNEL);
+ if (!private) {
device_unregister(&parent->dev);
- return PTR_ERR(private);
+ return -ENOMEM;
}
dev_set_drvdata(&sch->dev, parent);
diff --git a/drivers/s390/cio/vfio_ccw_ops.c b/drivers/s390/cio/vfio_ccw_ops.c
index 79c50cb7dcb8..eb0b8cc210bb 100644
--- a/drivers/s390/cio/vfio_ccw_ops.c
+++ b/drivers/s390/cio/vfio_ccw_ops.c
@@ -49,8 +49,51 @@ static int vfio_ccw_mdev_init_dev(struct vfio_device *vdev)
struct vfio_ccw_private *private =
container_of(vdev, struct vfio_ccw_private, vdev);
+ mutex_init(&private->io_mutex);
+ private->state = VFIO_CCW_STATE_STANDBY;
+ INIT_LIST_HEAD(&private->crw);
+ INIT_WORK(&private->io_work, vfio_ccw_sch_io_todo);
+ INIT_WORK(&private->crw_work, vfio_ccw_crw_todo);
init_completion(&private->release_comp);
+
+ private->cp.guest_cp = kcalloc(CCWCHAIN_LEN_MAX, sizeof(struct ccw1),
+ GFP_KERNEL);
+ if (!private->cp.guest_cp)
+ goto out_free_private;
+
+ private->io_region = kmem_cache_zalloc(vfio_ccw_io_region,
+ GFP_KERNEL | GFP_DMA);
+ if (!private->io_region)
+ goto out_free_cp;
+
+ private->cmd_region = kmem_cache_zalloc(vfio_ccw_cmd_region,
+ GFP_KERNEL | GFP_DMA);
+ if (!private->cmd_region)
+ goto out_free_io;
+
+ private->schib_region = kmem_cache_zalloc(vfio_ccw_schib_region,
+ GFP_KERNEL | GFP_DMA);
+ if (!private->schib_region)
+ goto out_free_cmd;
+
+ private->crw_region = kmem_cache_zalloc(vfio_ccw_crw_region,
+ GFP_KERNEL | GFP_DMA);
+ if (!private->crw_region)
+ goto out_free_schib;
+
return 0;
+
+out_free_schib:
+ kmem_cache_free(vfio_ccw_schib_region, private->schib_region);
+out_free_cmd:
+ kmem_cache_free(vfio_ccw_cmd_region, private->cmd_region);
+out_free_io:
+ kmem_cache_free(vfio_ccw_io_region, private->io_region);
+out_free_cp:
+ kfree(private->cp.guest_cp);
+out_free_private:
+ mutex_destroy(&private->io_mutex);
+ return -ENOMEM;
}
static int vfio_ccw_mdev_probe(struct mdev_device *mdev)
diff --git a/drivers/s390/cio/vfio_ccw_private.h b/drivers/s390/cio/vfio_ccw_private.h
index b28af2f63963..55d636225cff 100644
--- a/drivers/s390/cio/vfio_ccw_private.h
+++ b/drivers/s390/cio/vfio_ccw_private.h
@@ -131,6 +131,8 @@ struct vfio_ccw_private {
} __aligned(8);
int vfio_ccw_sch_quiesce(struct subchannel *sch);
+void vfio_ccw_sch_io_todo(struct work_struct *work);
+void vfio_ccw_crw_todo(struct work_struct *work);
extern struct mdev_driver vfio_ccw_mdev_driver;
@@ -178,7 +180,10 @@ static inline void vfio_ccw_fsm_event(struct vfio_ccw_private *private,
}
extern struct workqueue_struct *vfio_ccw_work_q;
-
+extern struct kmem_cache *vfio_ccw_io_region;
+extern struct kmem_cache *vfio_ccw_cmd_region;
+extern struct kmem_cache *vfio_ccw_schib_region;
+extern struct kmem_cache *vfio_ccw_crw_region;
/* s390 debug feature, similar to base cio */
extern debug_info_t *vfio_ccw_debug_msg_id;
--
2.34.1
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