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drm/amdkfd: Reuse function to find a process through pasid 

The kfd_lookup_process_by_pasid() is just for that purpose,
so use it instead of repeating the code.

v2: return on the condition (p == NULL) instead of BUG_ON(!p).

Signed-off-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Edward O'Callaghan 2016-09-17 15:01:42 +10:00 committed by Oded Gabbay
parent 78b13f7964
commit ad16a469ff
1 changed files with 25 additions and 36 deletions
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61
drivers/gpu/drm/amd/amdkfd/kfd_process.c
View File

@ -404,58 +404,47 @@ void kfd_unbind_process_from_device(struct kfd_dev *dev, unsigned int pasid)
{
struct kfd_process *p;
struct kfd_process_device *pdd;
int idx, i;
BUG_ON(dev == NULL);
idx = srcu_read_lock(&kfd_processes_srcu);
/*
* Look for the process that matches the pasid. If there is no such
* process, we either released it in amdkfd's own notifier, or there
* is a bug. Unfortunately, there is no way to tell...
*/
hash_for_each_rcu(kfd_processes_table, i, p, kfd_processes)
if (p->pasid == pasid) {
p = kfd_lookup_process_by_pasid(pasid);
if (!p)
return;
srcu_read_unlock(&kfd_processes_srcu, idx);
pr_debug("Unbinding process %d from IOMMU\n", pasid);
pr_debug("Unbinding process %d from IOMMU\n", pasid);
if ((dev->dbgmgr) && (dev->dbgmgr->pasid == p->pasid))
kfd_dbgmgr_destroy(dev->dbgmgr);
mutex_lock(&p->mutex);
pqm_uninit(&p->pqm);
if ((dev->dbgmgr) && (dev->dbgmgr->pasid == p->pasid))
kfd_dbgmgr_destroy(dev->dbgmgr);
pdd = kfd_get_process_device_data(dev, p);
pqm_uninit(&p->pqm);
if (!pdd) {
mutex_unlock(&p->mutex);
return;
}
pdd = kfd_get_process_device_data(dev, p);
if (pdd->reset_wavefronts) {
dbgdev_wave_reset_wavefronts(pdd->dev, p);
pdd->reset_wavefronts = false;
}
if (!pdd) {
mutex_unlock(&p->mutex);
return;
}
/*
* Just mark pdd as unbound, because we still need it
* to call amd_iommu_unbind_pasid() in when the
* process exits.
* We don't call amd_iommu_unbind_pasid() here
* because the IOMMU called us.
*/
pdd->bound = false;
if (pdd->reset_wavefronts) {
dbgdev_wave_reset_wavefronts(pdd->dev, p);
pdd->reset_wavefronts = false;
}
/*
* Just mark pdd as unbound, because we still need it
* to call amd_iommu_unbind_pasid() in when the
* process exits.
* We don't call amd_iommu_unbind_pasid() here
* because the IOMMU called us.
*/
pdd->bound = false;
mutex_unlock(&p->mutex);
return;
}
srcu_read_unlock(&kfd_processes_srcu, idx);
mutex_unlock(&p->mutex);
}
struct kfd_process_device *kfd_get_first_process_device_data(struct kfd_process *p)