[PATCH v3 5/8] vdpa_sim: make devices agnostic for work management

Stefano Garzarella
2023-03-21T15:49:03Z

Let's move work management inside the vdpa_sim core.
This way we can easily change how we manage the works, without
having to change the devices each time.

Acked-by: Eugenio Pérez Martin <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
---
drivers/vdpa/vdpa_sim/vdpa_sim.h | 3 ++-
drivers/vdpa/vdpa_sim/vdpa_sim.c | 17 +++++++++++++++--
drivers/vdpa/vdpa_sim/vdpa_sim_blk.c | 6 ++----
drivers/vdpa/vdpa_sim/vdpa_sim_net.c | 6 ++----
4 files changed, 21 insertions(+), 11 deletions(-)

diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.h b/drivers/vdpa/vdpa_sim/vdpa_sim.h
index 144858636c10..acee20faaf6a 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim.h
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim.h
@@ -45,7 +45,7 @@ struct vdpasim_dev_attr {
u32 ngroups;
u32 nas;

- work_func_t work_fn;
+ void (*work_fn)(struct vdpasim *vdpasim);
void (*get_config)(struct vdpasim *vdpasim, void *config);
void (*set_config)(struct vdpasim *vdpasim, const void *config);
int (*get_stats)(struct vdpasim *vdpasim, u16 idx,
@@ -78,6 +78,7 @@ struct vdpasim {

struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *attr,
const struct vdpa_dev_set_config *config);
+void vdpasim_schedule_work(struct vdpasim *vdpasim);

/* TODO: cross-endian support */
static inline bool vdpasim_is_little_endian(struct vdpasim *vdpasim)
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c
index 47cdf2a1f5b8..f6329900e61a 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
@@ -127,6 +127,13 @@ static void vdpasim_do_reset(struct vdpasim *vdpasim)
static const struct vdpa_config_ops vdpasim_config_ops;
static const struct vdpa_config_ops vdpasim_batch_config_ops;

+static void vdpasim_work_fn(struct work_struct *work)
+{
+ struct vdpasim *vdpasim = container_of(work, struct vdpasim, work);
+
+ vdpasim->dev_attr.work_fn(vdpasim);
+}
+
struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr,
const struct vdpa_dev_set_config *config)
{
@@ -163,7 +170,7 @@ struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr,

vdpasim = vdpa_to_sim(vdpa);
vdpasim->dev_attr = *dev_attr;
- INIT_WORK(&vdpasim->work, dev_attr->work_fn);
+ INIT_WORK(&vdpasim->work, vdpasim_work_fn);
spin_lock_init(&vdpasim->lock);
spin_lock_init(&vdpasim->iommu_lock);

@@ -214,6 +221,12 @@ struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr,
}
EXPORT_SYMBOL_GPL(vdpasim_create);

+void vdpasim_schedule_work(struct vdpasim *vdpasim)
+{
+ schedule_work(&vdpasim->work);
+}
+EXPORT_SYMBOL_GPL(vdpasim_schedule_work);
+
static int vdpasim_set_vq_address(struct vdpa_device *vdpa, u16 idx,
u64 desc_area, u64 driver_area,
u64 device_area)
@@ -248,7 +261,7 @@ static void vdpasim_kick_vq(struct vdpa_device *vdpa, u16 idx)
}

if (vq->ready)
- schedule_work(&vdpasim->work);
+ vdpasim_schedule_work(vdpasim);
}

static void vdpasim_set_vq_cb(struct vdpa_device *vdpa, u16 idx,
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
index 5117959bed8a..eb4897c8541e 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
@@ -11,7 +11,6 @@
#include <linux/module.h>
#include <linux/device.h>
#include <linux/kernel.h>
-#include <linux/sched.h>
#include <linux/blkdev.h>
#include <linux/vringh.h>
#include <linux/vdpa.h>
@@ -286,9 +285,8 @@ static bool vdpasim_blk_handle_req(struct vdpasim *vdpasim,
return handled;
}

-static void vdpasim_blk_work(struct work_struct *work)
+static void vdpasim_blk_work(struct vdpasim *vdpasim)
{
- struct vdpasim *vdpasim = container_of(work, struct vdpasim, work);
bool reschedule = false;
int i;

@@ -326,7 +324,7 @@ static void vdpasim_blk_work(struct work_struct *work)
spin_unlock(&vdpasim->lock);

if (reschedule)
- schedule_work(&vdpasim->work);
+ vdpasim_schedule_work(vdpasim);
}

static void vdpasim_blk_get_config(struct vdpasim *vdpasim, void *config)
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
index 862f405362de..e61a9ecbfafe 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
@@ -11,7 +11,6 @@
#include <linux/module.h>
#include <linux/device.h>
#include <linux/kernel.h>
-#include <linux/sched.h>
#include <linux/etherdevice.h>
#include <linux/vringh.h>
#include <linux/vdpa.h>
@@ -192,9 +191,8 @@ static void vdpasim_handle_cvq(struct vdpasim *vdpasim)
u64_stats_update_end(&net->cq_stats.syncp);
}

-static void vdpasim_net_work(struct work_struct *work)
+static void vdpasim_net_work(struct vdpasim *vdpasim)
{
- struct vdpasim *vdpasim = container_of(work, struct vdpasim, work);
struct vdpasim_virtqueue *txq = &vdpasim->vqs[1];
struct vdpasim_virtqueue *rxq = &vdpasim->vqs[0];
struct vdpasim_net *net = sim_to_net(vdpasim);
@@ -260,7 +258,7 @@ static void vdpasim_net_work(struct work_struct *work)
vdpasim_net_complete(rxq, write);

if (tx_pkts > 4) {
- schedule_work(&vdpasim->work);
+ vdpasim_schedule_work(vdpasim);
goto out;
}
}
--
2.39.2