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-rw-r--r--Documentation/driver-api/vfio-mediated-device.rst12
-rw-r--r--Documentation/s390/vfio-ap.rst2
-rw-r--r--Documentation/s390/vfio-ccw.rst2
-rw-r--r--drivers/gpu/drm/i915/gvt/gvt.h2
-rw-r--r--drivers/gpu/drm/i915/gvt/kvmgt.c5
-rw-r--r--drivers/s390/cio/vfio_ccw_drv.c5
-rw-r--r--drivers/s390/cio/vfio_ccw_ops.c1
-rw-r--r--drivers/s390/cio/vfio_ccw_private.h4
-rw-r--r--drivers/s390/crypto/vfio_ap_ops.c5
-rw-r--r--drivers/s390/crypto/vfio_ap_private.h1
-rw-r--r--drivers/vfio/mdev/mdev_core.c120
-rw-r--r--drivers/vfio/mdev/mdev_private.h23
-rw-r--r--drivers/vfio/mdev/mdev_sysfs.c4
-rw-r--r--include/linux/mdev.h15
-rw-r--r--samples/vfio-mdev/mbochs.c5
-rw-r--r--samples/vfio-mdev/mdpy.c5
-rw-r--r--samples/vfio-mdev/mtty.c6
17 files changed, 71 insertions, 146 deletions
diff --git a/Documentation/driver-api/vfio-mediated-device.rst b/Documentation/driver-api/vfio-mediated-device.rst
index f47dca6645aa..cd1667608ab5 100644
--- a/Documentation/driver-api/vfio-mediated-device.rst
+++ b/Documentation/driver-api/vfio-mediated-device.rst
@@ -58,19 +58,19 @@ devices as examples, as these devices are the first devices to use this module::
| MDEV CORE |
| MODULE |
| mdev.ko |
- | +-----------+ | mdev_register_device() +--------------+
+ | +-----------+ | mdev_register_parent() +--------------+
| | | +<------------------------+ |
| | | | | nvidia.ko |<-> physical
| | | +------------------------>+ | device
| | | | callbacks +--------------+
| | Physical | |
- | | device | | mdev_register_device() +--------------+
+ | | device | | mdev_register_parent() +--------------+
| | interface | |<------------------------+ |
| | | | | i915.ko |<-> physical
| | | +------------------------>+ | device
| | | | callbacks +--------------+
| | | |
- | | | | mdev_register_device() +--------------+
+ | | | | mdev_register_parent() +--------------+
| | | +<------------------------+ |
| | | | | ccw_device.ko|<-> physical
| | | +------------------------>+ | device
@@ -125,8 +125,8 @@ vfio_device_ops.
When a driver wants to add the GUID creation sysfs to an existing device it has
probe'd to then it should call::
- int mdev_register_device(struct device *dev,
- struct mdev_driver *mdev_driver);
+ int mdev_register_parent(struct mdev_parent *parent, struct device *dev,
+ struct mdev_driver *mdev_driver);
This will provide the 'mdev_supported_types/XX/create' files which can then be
used to trigger the creation of a mdev_device. The created mdev_device will be
@@ -134,7 +134,7 @@ attached to the specified driver.
When the driver needs to remove itself it calls::
- void mdev_unregister_device(struct device *dev);
+ void mdev_unregister_parent(struct mdev_parent *parent);
Which will unbind and destroy all the created mdevs and remove the sysfs files.
diff --git a/Documentation/s390/vfio-ap.rst b/Documentation/s390/vfio-ap.rst
index 61a0a3c6c7b4..00f4a04f6d4c 100644
--- a/Documentation/s390/vfio-ap.rst
+++ b/Documentation/s390/vfio-ap.rst
@@ -297,7 +297,7 @@ of the VFIO AP mediated device driver::
| MDEV CORE |
| MODULE |
| mdev.ko |
- | +---------+ | mdev_register_device() +--------------+
+ | +---------+ | mdev_register_parent() +--------------+
| |Physical | +<-----------------------+ |
| | device | | | vfio_ap.ko |<-> matrix
| |interface| +----------------------->+ | device
diff --git a/Documentation/s390/vfio-ccw.rst b/Documentation/s390/vfio-ccw.rst
index 8aad08a8b8a5..ea928a3806f4 100644
--- a/Documentation/s390/vfio-ccw.rst
+++ b/Documentation/s390/vfio-ccw.rst
@@ -156,7 +156,7 @@ Below is a high Level block diagram::
| MDEV CORE |
| MODULE |
| mdev.ko |
- | +---------+ | mdev_register_device() +--------------+
+ | +---------+ | mdev_register_parent() +--------------+
| |Physical | +<-----------------------+ |
| | device | | | vfio_ccw.ko |<-> subchannel
| |interface| +----------------------->+ | device
diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h
index 563ffc2fdfb7..fa4a56b50c82 100644
--- a/drivers/gpu/drm/i915/gvt/gvt.h
+++ b/drivers/gpu/drm/i915/gvt/gvt.h
@@ -36,6 +36,7 @@
#include <uapi/linux/pci_regs.h>
#include <linux/kvm_host.h>
#include <linux/vfio.h>
+#include <linux/mdev.h>
#include "i915_drv.h"
#include "intel_gvt.h"
@@ -337,6 +338,7 @@ struct intel_gvt {
struct intel_gvt_workload_scheduler scheduler;
struct notifier_block shadow_ctx_notifier_block[I915_NUM_ENGINES];
DECLARE_HASHTABLE(cmd_table, GVT_CMD_HASH_BITS);
+ struct mdev_parent parent;
struct intel_vgpu_type *types;
unsigned int num_types;
struct intel_vgpu *idle_vgpu;
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index ee314402fb61..d7afe3f5f75b 100644
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -1923,7 +1923,7 @@ static void intel_gvt_clean_device(struct drm_i915_private *i915)
if (drm_WARN_ON(&i915->drm, !gvt))
return;
- mdev_unregister_device(i915->drm.dev);
+ mdev_unregister_parent(&gvt->parent);
intel_gvt_cleanup_vgpu_type_groups(gvt);
intel_gvt_destroy_idle_vgpu(gvt->idle_vgpu);
intel_gvt_clean_vgpu_types(gvt);
@@ -2028,7 +2028,8 @@ static int intel_gvt_init_device(struct drm_i915_private *i915)
if (ret)
goto out_destroy_idle_vgpu;
- ret = mdev_register_device(i915->drm.dev, &intel_vgpu_mdev_driver);
+ ret = mdev_register_parent(&gvt->parent, i915->drm.dev,
+ &intel_vgpu_mdev_driver);
if (ret)
goto out_cleanup_vgpu_type_groups;
diff --git a/drivers/s390/cio/vfio_ccw_drv.c b/drivers/s390/cio/vfio_ccw_drv.c
index e9985c63dc6b..7d105915bd14 100644
--- a/drivers/s390/cio/vfio_ccw_drv.c
+++ b/drivers/s390/cio/vfio_ccw_drv.c
@@ -221,7 +221,8 @@ static int vfio_ccw_sch_probe(struct subchannel *sch)
dev_set_drvdata(&sch->dev, private);
- ret = mdev_register_device(&sch->dev, &vfio_ccw_mdev_driver);
+ ret = mdev_register_parent(&private->parent, &sch->dev,
+ &vfio_ccw_mdev_driver);
if (ret)
goto out_free;
@@ -240,7 +241,7 @@ static void vfio_ccw_sch_remove(struct subchannel *sch)
{
struct vfio_ccw_private *private = dev_get_drvdata(&sch->dev);
- mdev_unregister_device(&sch->dev);
+ mdev_unregister_parent(&private->parent);
dev_set_drvdata(&sch->dev, NULL);
diff --git a/drivers/s390/cio/vfio_ccw_ops.c b/drivers/s390/cio/vfio_ccw_ops.c
index 9f8486c0d3d3..9a0e0c5ffb1a 100644
--- a/drivers/s390/cio/vfio_ccw_ops.c
+++ b/drivers/s390/cio/vfio_ccw_ops.c
@@ -11,7 +11,6 @@
*/
#include <linux/vfio.h>
-#include <linux/mdev.h>
#include <linux/nospec.h>
#include <linux/slab.h>
diff --git a/drivers/s390/cio/vfio_ccw_private.h b/drivers/s390/cio/vfio_ccw_private.h
index 63d9202b29c7..1a4bfb1b5a80 100644
--- a/drivers/s390/cio/vfio_ccw_private.h
+++ b/drivers/s390/cio/vfio_ccw_private.h
@@ -18,6 +18,7 @@
#include <linux/workqueue.h>
#include <linux/vfio_ccw.h>
#include <linux/vfio.h>
+#include <linux/mdev.h>
#include <asm/crw.h>
#include <asm/debug.h>
@@ -89,6 +90,7 @@ struct vfio_ccw_crw {
* @io_work: work for deferral process of I/O handling
* @crw_work: work for deferral process of CRW handling
* @release_comp: synchronization helper for vfio device release
+ * @parent: parent data structures for mdevs created
*/
struct vfio_ccw_private {
struct vfio_device vdev;
@@ -116,6 +118,8 @@ struct vfio_ccw_private {
struct work_struct crw_work;
struct completion release_comp;
+
+ struct mdev_parent parent;
} __aligned(8);
int vfio_ccw_sch_quiesce(struct subchannel *sch);
diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c
index 161597357a64..724d09a74a8f 100644
--- a/drivers/s390/crypto/vfio_ap_ops.c
+++ b/drivers/s390/crypto/vfio_ap_ops.c
@@ -1830,7 +1830,8 @@ int vfio_ap_mdev_register(void)
if (ret)
return ret;
- ret = mdev_register_device(&matrix_dev->device, &vfio_ap_matrix_driver);
+ ret = mdev_register_parent(&matrix_dev->parent, &matrix_dev->device,
+ &vfio_ap_matrix_driver);
if (ret)
goto err_driver;
return 0;
@@ -1842,7 +1843,7 @@ err_driver:
void vfio_ap_mdev_unregister(void)
{
- mdev_unregister_device(&matrix_dev->device);
+ mdev_unregister_parent(&matrix_dev->parent);
mdev_unregister_driver(&vfio_ap_matrix_driver);
}
diff --git a/drivers/s390/crypto/vfio_ap_private.h b/drivers/s390/crypto/vfio_ap_private.h
index 163eeaaf24ce..35165730f517 100644
--- a/drivers/s390/crypto/vfio_ap_private.h
+++ b/drivers/s390/crypto/vfio_ap_private.h
@@ -52,6 +52,7 @@ struct ap_matrix_dev {
struct mutex mdevs_lock; /* serializes access to each ap_matrix_mdev */
struct ap_driver *vfio_ap_drv;
struct mutex guests_lock; /* serializes access to each KVM guest */
+ struct mdev_parent parent;
};
extern struct ap_matrix_dev *matrix_dev;
diff --git a/drivers/vfio/mdev/mdev_core.c b/drivers/vfio/mdev/mdev_core.c
index 2c32923fbad2..fa05ac339695 100644
--- a/drivers/vfio/mdev/mdev_core.c
+++ b/drivers/vfio/mdev/mdev_core.c
@@ -18,8 +18,6 @@
#define DRIVER_AUTHOR "NVIDIA Corporation"
#define DRIVER_DESC "Mediated device Core Driver"
-static LIST_HEAD(parent_list);
-static DEFINE_MUTEX(parent_list_lock);
static struct class_compat *mdev_bus_compat_class;
static LIST_HEAD(mdev_list);
@@ -61,28 +59,6 @@ struct device *mtype_get_parent_dev(struct mdev_type *mtype)
}
EXPORT_SYMBOL(mtype_get_parent_dev);
-/* Should be called holding parent_list_lock */
-static struct mdev_parent *__find_parent_device(struct device *dev)
-{
- struct mdev_parent *parent;
-
- list_for_each_entry(parent, &parent_list, next) {
- if (parent->dev == dev)
- return parent;
- }
- return NULL;
-}
-
-void mdev_release_parent(struct kref *kref)
-{
- struct mdev_parent *parent = container_of(kref, struct mdev_parent,
- ref);
- struct device *dev = parent->dev;
-
- kfree(parent);
- put_device(dev);
-}
-
/* Caller must hold parent unreg_sem read or write lock */
static void mdev_device_remove_common(struct mdev_device *mdev)
{
@@ -105,125 +81,73 @@ static int mdev_device_remove_cb(struct device *dev, void *data)
}
/*
- * mdev_register_device : Register a device
+ * mdev_register_parent: Register a device as parent for mdevs
+ * @parent: parent structure registered
* @dev: device structure representing parent device.
* @mdev_driver: Device driver to bind to the newly created mdev
*
- * Add device to list of registered parent devices.
+ * Registers the @parent stucture as a parent for mdev types and thus mdev
+ * devices. The caller needs to hold a reference on @dev that must not be
+ * released until after the call to mdev_unregister_parent().
+ *
* Returns a negative value on error, otherwise 0.
*/
-int mdev_register_device(struct device *dev, struct mdev_driver *mdev_driver)
+int mdev_register_parent(struct mdev_parent *parent, struct device *dev,
+ struct mdev_driver *mdev_driver)
{
- int ret;
- struct mdev_parent *parent;
char *env_string = "MDEV_STATE=registered";
char *envp[] = { env_string, NULL };
+ int ret;
/* check for mandatory ops */
if (!mdev_driver->supported_type_groups)
return -EINVAL;
- dev = get_device(dev);
- if (!dev)
- return -EINVAL;
-
- mutex_lock(&parent_list_lock);
-
- /* Check for duplicate */
- parent = __find_parent_device(dev);
- if (parent) {
- parent = NULL;
- ret = -EEXIST;
- goto add_dev_err;
- }
-
- parent = kzalloc(sizeof(*parent), GFP_KERNEL);
- if (!parent) {
- ret = -ENOMEM;
- goto add_dev_err;
- }
-
- kref_init(&parent->ref);
+ memset(parent, 0, sizeof(*parent));
init_rwsem(&parent->unreg_sem);
-
parent->dev = dev;
parent->mdev_driver = mdev_driver;
if (!mdev_bus_compat_class) {
mdev_bus_compat_class = class_compat_register("mdev_bus");
- if (!mdev_bus_compat_class) {
- ret = -ENOMEM;
- goto add_dev_err;
- }
+ if (!mdev_bus_compat_class)
+ return -ENOMEM;
}
ret = parent_create_sysfs_files(parent);
if (ret)
- goto add_dev_err;
+ return ret;
ret = class_compat_create_link(mdev_bus_compat_class, dev, NULL);
if (ret)
dev_warn(dev, "Failed to create compatibility class link\n");
- list_add(&parent->next, &parent_list);
- mutex_unlock(&parent_list_lock);
-
dev_info(dev, "MDEV: Registered\n");
kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
-
return 0;
-
-add_dev_err:
- mutex_unlock(&parent_list_lock);
- if (parent)
- mdev_put_parent(parent);
- else
- put_device(dev);
- return ret;
}
-EXPORT_SYMBOL(mdev_register_device);
+EXPORT_SYMBOL(mdev_register_parent);
/*
- * mdev_unregister_device : Unregister a parent device
- * @dev: device structure representing parent device.
- *
- * Remove device from list of registered parent devices. Give a chance to free
- * existing mediated devices for given device.
+ * mdev_unregister_parent : Unregister a parent device
+ * @parent: parent structure to unregister
*/
-
-void mdev_unregister_device(struct device *dev)
+void mdev_unregister_parent(struct mdev_parent *parent)
{
- struct mdev_parent *parent;
char *env_string = "MDEV_STATE=unregistered";
char *envp[] = { env_string, NULL };
- mutex_lock(&parent_list_lock);
- parent = __find_parent_device(dev);
-
- if (!parent) {
- mutex_unlock(&parent_list_lock);
- return;
- }
- dev_info(dev, "MDEV: Unregistering\n");
-
- list_del(&parent->next);
- mutex_unlock(&parent_list_lock);
+ dev_info(parent->dev, "MDEV: Unregistering\n");
down_write(&parent->unreg_sem);
-
- class_compat_remove_link(mdev_bus_compat_class, dev, NULL);
-
- device_for_each_child(dev, NULL, mdev_device_remove_cb);
-
+ class_compat_remove_link(mdev_bus_compat_class, parent->dev, NULL);
+ device_for_each_child(parent->dev, NULL, mdev_device_remove_cb);
parent_remove_sysfs_files(parent);
up_write(&parent->unreg_sem);
- mdev_put_parent(parent);
-
- /* We still have the caller's reference to use for the uevent */
- kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
+ kobject_uevent_env(&parent->dev->kobj, KOBJ_CHANGE, envp);
}
-EXPORT_SYMBOL(mdev_unregister_device);
+EXPORT_SYMBOL(mdev_unregister_parent);
static void mdev_device_release(struct device *dev)
{
diff --git a/drivers/vfio/mdev/mdev_private.h b/drivers/vfio/mdev/mdev_private.h
index 7c9fc79f3d83..297f911fdc89 100644
--- a/drivers/vfio/mdev/mdev_private.h
+++ b/drivers/vfio/mdev/mdev_private.h
@@ -13,17 +13,6 @@
int mdev_bus_register(void);
void mdev_bus_unregister(void);
-struct mdev_parent {
- struct device *dev;
- struct mdev_driver *mdev_driver;
- struct kref ref;
- struct list_head next;
- struct kset *mdev_types_kset;
- struct list_head type_list;
- /* Synchronize device creation/removal with parent unregistration */
- struct rw_semaphore unreg_sem;
-};
-
struct mdev_type {
struct kobject kobj;
struct kobject *devices_kobj;
@@ -48,16 +37,4 @@ void mdev_remove_sysfs_files(struct mdev_device *mdev);
int mdev_device_create(struct mdev_type *kobj, const guid_t *uuid);
int mdev_device_remove(struct mdev_device *dev);
-void mdev_release_parent(struct kref *kref);
-
-static inline void mdev_get_parent(struct mdev_parent *parent)
-{
- kref_get(&parent->ref);
-}
-
-static inline void mdev_put_parent(struct mdev_parent *parent)
-{
- kref_put(&parent->ref, mdev_release_parent);
-}
-
#endif /* MDEV_PRIVATE_H */
diff --git a/drivers/vfio/mdev/mdev_sysfs.c b/drivers/vfio/mdev/mdev_sysfs.c
index 4bfbf49aaa66..b71ffc559487 100644
--- a/drivers/vfio/mdev/mdev_sysfs.c
+++ b/drivers/vfio/mdev/mdev_sysfs.c
@@ -81,7 +81,7 @@ static void mdev_type_release(struct kobject *kobj)
pr_debug("Releasing group %s\n", kobj->name);
/* Pairs with the get in add_mdev_supported_type() */
- mdev_put_parent(type->parent);
+ put_device(type->parent->dev);
kfree(type);
}
@@ -110,7 +110,7 @@ static struct mdev_type *add_mdev_supported_type(struct mdev_parent *parent,
type->kobj.kset = parent->mdev_types_kset;
type->parent = parent;
/* Pairs with the put in mdev_type_release() */
- mdev_get_parent(parent);
+ get_device(parent->dev);
type->type_group_id = type_group_id;
ret = kobject_init_and_add(&type->kobj, &mdev_type_ktype, NULL,
diff --git a/include/linux/mdev.h b/include/linux/mdev.h
index a5d8ae6132a2..262512c2a8ff 100644
--- a/include/linux/mdev.h
+++ b/include/linux/mdev.h
@@ -23,6 +23,16 @@ struct mdev_device {
bool active;
};
+/* embedded into the struct device that the mdev devices hang off */
+struct mdev_parent {
+ struct device *dev;
+ struct mdev_driver *mdev_driver;
+ struct kset *mdev_types_kset;
+ struct list_head type_list;
+ /* Synchronize device creation/removal with parent unregistration */
+ struct rw_semaphore unreg_sem;
+};
+
static inline struct mdev_device *to_mdev_device(struct device *dev)
{
return container_of(dev, struct mdev_device, dev);
@@ -70,8 +80,9 @@ struct mdev_driver {
extern struct bus_type mdev_bus_type;
-int mdev_register_device(struct device *dev, struct mdev_driver *mdev_driver);
-void mdev_unregister_device(struct device *dev);
+int mdev_register_parent(struct mdev_parent *parent, struct device *dev,
+ struct mdev_driver *mdev_driver);
+void mdev_unregister_parent(struct mdev_parent *parent);
int mdev_register_driver(struct mdev_driver *drv);
void mdev_unregister_driver(struct mdev_driver *drv);
diff --git a/samples/vfio-mdev/mbochs.c b/samples/vfio-mdev/mbochs.c
index 985b6e713621..2c4791abbc3d 100644
--- a/samples/vfio-mdev/mbochs.c
+++ b/samples/vfio-mdev/mbochs.c
@@ -128,6 +128,7 @@ static dev_t mbochs_devt;
static struct class *mbochs_class;
static struct cdev mbochs_cdev;
static struct device mbochs_dev;
+static struct mdev_parent mbochs_parent;
static atomic_t mbochs_avail_mbytes;
static const struct vfio_device_ops mbochs_dev_ops;
@@ -1475,7 +1476,7 @@ static int __init mbochs_dev_init(void)
if (ret)
goto err_class;
- ret = mdev_register_device(&mbochs_dev, &mbochs_driver);
+ ret = mdev_register_parent(&mbochs_parent, &mbochs_dev, &mbochs_driver);
if (ret)
goto err_device;
@@ -1496,7 +1497,7 @@ err_cdev:
static void __exit mbochs_dev_exit(void)
{
mbochs_dev.bus = NULL;
- mdev_unregister_device(&mbochs_dev);
+ mdev_unregister_parent(&mbochs_parent);
device_unregister(&mbochs_dev);
mdev_unregister_driver(&mbochs_driver);
diff --git a/samples/vfio-mdev/mdpy.c b/samples/vfio-mdev/mdpy.c
index 1daab012b5d8..01f345430b97 100644
--- a/samples/vfio-mdev/mdpy.c
+++ b/samples/vfio-mdev/mdpy.c
@@ -83,6 +83,7 @@ static dev_t mdpy_devt;
static struct class *mdpy_class;
static struct cdev mdpy_cdev;
static struct device mdpy_dev;
+static struct mdev_parent mdpy_parent;
static u32 mdpy_count;
static const struct vfio_device_ops mdpy_dev_ops;
@@ -778,7 +779,7 @@ static int __init mdpy_dev_init(void)
if (ret)
goto err_class;
- ret = mdev_register_device(&mdpy_dev, &mdpy_driver);
+ ret = mdev_register_parent(&mdpy_parent, &mdpy_dev, &mdpy_driver);
if (ret)
goto err_device;
@@ -799,7 +800,7 @@ err_cdev:
static void __exit mdpy_dev_exit(void)
{
mdpy_dev.bus = NULL;
- mdev_unregister_device(&mdpy_dev);
+ mdev_unregister_parent(&mdpy_parent);
device_unregister(&mdpy_dev);
mdev_unregister_driver(&mdpy_driver);
diff --git a/samples/vfio-mdev/mtty.c b/samples/vfio-mdev/mtty.c
index 86843ce3d9a2..e80baac51381 100644
--- a/samples/vfio-mdev/mtty.c
+++ b/samples/vfio-mdev/mtty.c
@@ -72,6 +72,7 @@ static struct mtty_dev {
struct cdev vd_cdev;
struct idr vd_idr;
struct device dev;
+ struct mdev_parent parent;
} mtty_dev;
struct mdev_region_info {
@@ -1361,7 +1362,8 @@ static int __init mtty_dev_init(void)
if (ret)
goto err_class;
- ret = mdev_register_device(&mtty_dev.dev, &mtty_driver);
+ ret = mdev_register_parent(&mtty_dev.parent, &mtty_dev.dev,
+ &mtty_driver);
if (ret)
goto err_device;
return 0;
@@ -1381,7 +1383,7 @@ err_cdev:
static void __exit mtty_dev_exit(void)
{
mtty_dev.dev.bus = NULL;
- mdev_unregister_device(&mtty_dev.dev);
+ mdev_unregister_parent(&mtty_dev.parent);
device_unregister(&mtty_dev.dev);
idr_destroy(&mtty_dev.vd_idr);
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-19 07:46:10 +0000