static struct ksem *
ksem_hold(struct ksem *ks)
{
refcount_acquire(&ks->ks_ref);
return (ks);
}
static struct shmfd *
shm_hold(struct shmfd *shmfd)
{
refcount_acquire(&shmfd->shm_refs);
return (shmfd);
}
/*
* Allocate icl_pdu with empty BHS to fill up by the caller.
*/
struct icl_pdu *
icl_soft_conn_new_pdu(struct icl_conn *ic, int flags)
{
struct icl_pdu *ip;
#ifdef DIAGNOSTIC
refcount_acquire(&ic->ic_outstanding_pdus);
#endif
ip = uma_zalloc(icl_pdu_zone, flags | M_ZERO);
if (ip == NULL) {
ICL_WARN("failed to allocate %zd bytes", sizeof(*ip));
#ifdef DIAGNOSTIC
refcount_release(&ic->ic_outstanding_pdus);
#endif
return (NULL);
}
ip->ip_conn = ic;
CTASSERT(sizeof(struct iscsi_bhs) <= MHLEN);
ip->ip_bhs_mbuf = m_gethdr(flags, MT_DATA);
if (ip->ip_bhs_mbuf == NULL) {
ICL_WARN("failed to allocate BHS mbuf");
icl_soft_conn_pdu_free(ic, ip);
return (NULL);
}
ip->ip_bhs = mtod(ip->ip_bhs_mbuf, struct iscsi_bhs *);
memset(ip->ip_bhs, 0, sizeof(struct iscsi_bhs));
ip->ip_bhs_mbuf->m_len = sizeof(struct iscsi_bhs);
return (ip);
}
struct toepcb *
hold_toepcb(struct toepcb *toep)
{
refcount_acquire(&toep->refcount);
return (toep);
}
/*
* Claim another reference to a ucred structure.
*/
struct ucred *
crhold(struct ucred *cr)
{
refcount_acquire(&cr->cr_ref);
return (cr);
}
/*
* Acquire a reference to a cpuset, all pointers must be tracked with refs.
*/
struct cpuset *
cpuset_ref(struct cpuset *set)
{
refcount_acquire(&set->cs_ref);
return (set);
}
struct vt_font *
vtfont_ref(struct vt_font *vf)
{
refcount_acquire(&vf->vf_refcount);
return (vf);
}
void
drm_gem_object_reference(struct drm_gem_object *obj)
{
KASSERT(obj->refcount > 0, ("Dandling obj %p", obj));
refcount_acquire(&obj->refcount);
}
static __inline struct filemon *
filemon_acquire(struct filemon *filemon)
{
if (filemon != NULL)
refcount_acquire(&filemon->refcnt);
return (filemon);
}
void
icl_cxgbei_new_pdu_set_conn(struct icl_pdu *ip, struct icl_conn *ic)
{
ip->ip_conn = ic;
#ifdef DIAGNOSTIC
refcount_acquire(&ic->ic_outstanding_pdus);
#endif
}
struct ttm_base_object *ttm_base_object_lookup(struct ttm_object_file *tfile,
uint32_t key)
{
struct ttm_object_device *tdev = tfile->tdev;
struct ttm_base_object *base;
struct drm_hash_item *hash;
int ret;
rw_rlock(&tdev->object_lock);
ret = drm_ht_find_item(&tdev->object_hash, key, &hash);
if (ret == 0) {
base = drm_hash_entry(hash, struct ttm_base_object, hash);
refcount_acquire(&base->refcount);
}
static struct icl_pdu *
icl_pdu_new(struct icl_conn *ic, int flags)
{
struct icl_pdu *ip;
refcount_acquire(&ic->ic_outstanding_pdus);
ip = uma_zalloc(icl_pdu_zone, flags | M_ZERO);
if (ip == NULL) {
ICL_WARN("failed to allocate %zd bytes", sizeof(*ip));
refcount_release(&ic->ic_outstanding_pdus);
return (NULL);
}
ip->ip_conn = ic;
return (ip);
}
int
ttm_bo_mmap_single(struct ttm_bo_device *bdev, vm_ooffset_t *offset, vm_size_t size,
struct vm_object **obj_res, int nprot)
{
struct ttm_bo_driver *driver;
struct ttm_buffer_object *bo;
struct vm_object *vm_obj;
int ret;
rw_wlock(&bdev->vm_lock);
bo = ttm_bo_vm_lookup_rb(bdev, OFF_TO_IDX(*offset), OFF_TO_IDX(size));
if (likely(bo != NULL))
refcount_acquire(&bo->kref);
rw_wunlock(&bdev->vm_lock);
if (unlikely(bo == NULL)) {
printf("[TTM] Could not find buffer object to map\n");
return (EINVAL);
}
driver = bo->bdev->driver;
if (unlikely(!driver->verify_access)) {
ret = EPERM;
goto out_unref;
}
ret = -driver->verify_access(bo);
if (unlikely(ret != 0))
goto out_unref;
vm_obj = cdev_pager_allocate(bo, OBJT_MGTDEVICE, &ttm_pager_ops,
size, nprot, 0, curthread->td_ucred);
if (vm_obj == NULL) {
ret = EINVAL;
goto out_unref;
}
/*
* Note: We're transferring the bo reference to vm_obj->handle here.
*/
*offset = 0;
*obj_res = vm_obj;
return 0;
out_unref:
ttm_bo_unref(&bo);
return ret;
}
void
loginclass_hold(struct loginclass *lc)
{
refcount_acquire(&lc->lc_refcount);
}
/**
* radeon_fence_ref - take a ref on a fence
*
* @fence: radeon fence object
*
* Take a reference on a fence (all asics).
* Returns the fence.
*/
struct radeon_fence *radeon_fence_ref(struct radeon_fence *fence)
{
refcount_acquire(&fence->kref);
return fence;
}
static inline struct ttm_object_file *
ttm_object_file_ref(struct ttm_object_file *tfile)
{
refcount_acquire(&tfile->refcount);
return tfile;
}
/**
* Retain and return a reference to the given data instance.
*
* @param nv The reference to be retained.
*/
struct bhnd_nvram_data *
bhnd_nvram_data_retain(struct bhnd_nvram_data *nv)
{
refcount_acquire(&nv->refs);
return (nv);
}