[PATCH 3/3] drm/radeon: Use the drm suballocation manager implementation.
Christian König
christian.koenig at amd.com
Thu Feb 23 11:18:01 UTC 2023
Am 23.02.23 um 11:57 schrieb Thomas Hellström:
> From: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
>
> Use the generic suballocation helper for radeon.
>
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> Co-developed-by: Thomas Hellström <thomas.hellstrom at linux.intel.com>
> Signed-off-by: Thomas Hellström <thomas.hellstrom at linux.intel.com>
Reviewed-by: Christian König <christian.koenig at amd.com>
> ---
> drivers/gpu/drm/radeon/radeon.h | 55 +---
> drivers/gpu/drm/radeon/radeon_ib.c | 12 +-
> drivers/gpu/drm/radeon/radeon_object.h | 25 +-
> drivers/gpu/drm/radeon/radeon_sa.c | 316 ++--------------------
> drivers/gpu/drm/radeon/radeon_semaphore.c | 4 +-
> 5 files changed, 56 insertions(+), 356 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
> index 57e20780a458..d19a4b1c1a8f 100644
> --- a/drivers/gpu/drm/radeon/radeon.h
> +++ b/drivers/gpu/drm/radeon/radeon.h
> @@ -79,6 +79,7 @@
>
> #include <drm/drm_gem.h>
> #include <drm/drm_audio_component.h>
> +#include <drm/drm_suballoc.h>
>
> #include "radeon_family.h"
> #include "radeon_mode.h"
> @@ -511,52 +512,12 @@ struct radeon_bo {
> };
> #define gem_to_radeon_bo(gobj) container_of((gobj), struct radeon_bo, tbo.base)
>
> -/* sub-allocation manager, it has to be protected by another lock.
> - * By conception this is an helper for other part of the driver
> - * like the indirect buffer or semaphore, which both have their
> - * locking.
> - *
> - * Principe is simple, we keep a list of sub allocation in offset
> - * order (first entry has offset == 0, last entry has the highest
> - * offset).
> - *
> - * When allocating new object we first check if there is room at
> - * the end total_size - (last_object_offset + last_object_size) >=
> - * alloc_size. If so we allocate new object there.
> - *
> - * When there is not enough room at the end, we start waiting for
> - * each sub object until we reach object_offset+object_size >=
> - * alloc_size, this object then become the sub object we return.
> - *
> - * Alignment can't be bigger than page size.
> - *
> - * Hole are not considered for allocation to keep things simple.
> - * Assumption is that there won't be hole (all object on same
> - * alignment).
> - */
> struct radeon_sa_manager {
> - wait_queue_head_t wq;
> - struct radeon_bo *bo;
> - struct list_head *hole;
> - struct list_head flist[RADEON_NUM_RINGS];
> - struct list_head olist;
> - unsigned size;
> - uint64_t gpu_addr;
> - void *cpu_ptr;
> - uint32_t domain;
> - uint32_t align;
> -};
> -
> -struct radeon_sa_bo;
> -
> -/* sub-allocation buffer */
> -struct radeon_sa_bo {
> - struct list_head olist;
> - struct list_head flist;
> - struct radeon_sa_manager *manager;
> - unsigned soffset;
> - unsigned eoffset;
> - struct radeon_fence *fence;
> + struct drm_suballoc_manager base;
> + struct radeon_bo *bo;
> + uint64_t gpu_addr;
> + void *cpu_ptr;
> + u32 domain;
> };
>
> /*
> @@ -587,7 +548,7 @@ int radeon_mode_dumb_mmap(struct drm_file *filp,
> * Semaphores.
> */
> struct radeon_semaphore {
> - struct radeon_sa_bo *sa_bo;
> + struct drm_suballoc *sa_bo;
> signed waiters;
> uint64_t gpu_addr;
> };
> @@ -816,7 +777,7 @@ void radeon_irq_kms_disable_hpd(struct radeon_device *rdev, unsigned hpd_mask);
> */
>
> struct radeon_ib {
> - struct radeon_sa_bo *sa_bo;
> + struct drm_suballoc *sa_bo;
> uint32_t length_dw;
> uint64_t gpu_addr;
> uint32_t *ptr;
> diff --git a/drivers/gpu/drm/radeon/radeon_ib.c b/drivers/gpu/drm/radeon/radeon_ib.c
> index 62b116727b4f..6a45a72488f9 100644
> --- a/drivers/gpu/drm/radeon/radeon_ib.c
> +++ b/drivers/gpu/drm/radeon/radeon_ib.c
> @@ -61,7 +61,7 @@ int radeon_ib_get(struct radeon_device *rdev, int ring,
> {
> int r;
>
> - r = radeon_sa_bo_new(rdev, &rdev->ring_tmp_bo, &ib->sa_bo, size, 256);
> + r = radeon_sa_bo_new(&rdev->ring_tmp_bo, &ib->sa_bo, size, 256);
> if (r) {
> dev_err(rdev->dev, "failed to get a new IB (%d)\n", r);
> return r;
> @@ -77,7 +77,7 @@ int radeon_ib_get(struct radeon_device *rdev, int ring,
> /* ib pool is bound at RADEON_VA_IB_OFFSET in virtual address
> * space and soffset is the offset inside the pool bo
> */
> - ib->gpu_addr = ib->sa_bo->soffset + RADEON_VA_IB_OFFSET;
> + ib->gpu_addr = drm_suballoc_soffset(ib->sa_bo) + RADEON_VA_IB_OFFSET;
> } else {
> ib->gpu_addr = radeon_sa_bo_gpu_addr(ib->sa_bo);
> }
> @@ -97,7 +97,7 @@ int radeon_ib_get(struct radeon_device *rdev, int ring,
> void radeon_ib_free(struct radeon_device *rdev, struct radeon_ib *ib)
> {
> radeon_sync_free(rdev, &ib->sync, ib->fence);
> - radeon_sa_bo_free(rdev, &ib->sa_bo, ib->fence);
> + radeon_sa_bo_free(&ib->sa_bo, ib->fence);
> radeon_fence_unref(&ib->fence);
> }
>
> @@ -201,8 +201,7 @@ int radeon_ib_pool_init(struct radeon_device *rdev)
>
> if (rdev->family >= CHIP_BONAIRE) {
> r = radeon_sa_bo_manager_init(rdev, &rdev->ring_tmp_bo,
> - RADEON_IB_POOL_SIZE*64*1024,
> - RADEON_GPU_PAGE_SIZE,
> + RADEON_IB_POOL_SIZE*64*1024, 256,
> RADEON_GEM_DOMAIN_GTT,
> RADEON_GEM_GTT_WC);
> } else {
> @@ -210,8 +209,7 @@ int radeon_ib_pool_init(struct radeon_device *rdev)
> * to the command stream checking
> */
> r = radeon_sa_bo_manager_init(rdev, &rdev->ring_tmp_bo,
> - RADEON_IB_POOL_SIZE*64*1024,
> - RADEON_GPU_PAGE_SIZE,
> + RADEON_IB_POOL_SIZE*64*1024, 256,
> RADEON_GEM_DOMAIN_GTT, 0);
> }
> if (r) {
> diff --git a/drivers/gpu/drm/radeon/radeon_object.h b/drivers/gpu/drm/radeon/radeon_object.h
> index 0a6ef49e990a..39cc87a59a9a 100644
> --- a/drivers/gpu/drm/radeon/radeon_object.h
> +++ b/drivers/gpu/drm/radeon/radeon_object.h
> @@ -169,15 +169,22 @@ extern void radeon_bo_fence(struct radeon_bo *bo, struct radeon_fence *fence,
> /*
> * sub allocation
> */
> +static inline struct radeon_sa_manager *
> +to_radeon_sa_manager(struct drm_suballoc_manager *manager)
> +{
> + return container_of(manager, struct radeon_sa_manager, base);
> +}
>
> -static inline uint64_t radeon_sa_bo_gpu_addr(struct radeon_sa_bo *sa_bo)
> +static inline uint64_t radeon_sa_bo_gpu_addr(struct drm_suballoc *sa_bo)
> {
> - return sa_bo->manager->gpu_addr + sa_bo->soffset;
> + return to_radeon_sa_manager(sa_bo->manager)->gpu_addr +
> + drm_suballoc_soffset(sa_bo);
> }
>
> -static inline void * radeon_sa_bo_cpu_addr(struct radeon_sa_bo *sa_bo)
> +static inline void *radeon_sa_bo_cpu_addr(struct drm_suballoc *sa_bo)
> {
> - return sa_bo->manager->cpu_ptr + sa_bo->soffset;
> + return to_radeon_sa_manager(sa_bo->manager)->cpu_ptr +
> + drm_suballoc_soffset(sa_bo);
> }
>
> extern int radeon_sa_bo_manager_init(struct radeon_device *rdev,
> @@ -190,12 +197,10 @@ extern int radeon_sa_bo_manager_start(struct radeon_device *rdev,
> struct radeon_sa_manager *sa_manager);
> extern int radeon_sa_bo_manager_suspend(struct radeon_device *rdev,
> struct radeon_sa_manager *sa_manager);
> -extern int radeon_sa_bo_new(struct radeon_device *rdev,
> - struct radeon_sa_manager *sa_manager,
> - struct radeon_sa_bo **sa_bo,
> - unsigned size, unsigned align);
> -extern void radeon_sa_bo_free(struct radeon_device *rdev,
> - struct radeon_sa_bo **sa_bo,
> +extern int radeon_sa_bo_new(struct radeon_sa_manager *sa_manager,
> + struct drm_suballoc **sa_bo,
> + unsigned int size, unsigned int align);
> +extern void radeon_sa_bo_free(struct drm_suballoc **sa_bo,
> struct radeon_fence *fence);
> #if defined(CONFIG_DEBUG_FS)
> extern void radeon_sa_bo_dump_debug_info(struct radeon_sa_manager *sa_manager,
> diff --git a/drivers/gpu/drm/radeon/radeon_sa.c b/drivers/gpu/drm/radeon/radeon_sa.c
> index 0981948bd9ed..c87a57c9c592 100644
> --- a/drivers/gpu/drm/radeon/radeon_sa.c
> +++ b/drivers/gpu/drm/radeon/radeon_sa.c
> @@ -44,53 +44,32 @@
>
> #include "radeon.h"
>
> -static void radeon_sa_bo_remove_locked(struct radeon_sa_bo *sa_bo);
> -static void radeon_sa_bo_try_free(struct radeon_sa_manager *sa_manager);
> -
> int radeon_sa_bo_manager_init(struct radeon_device *rdev,
> struct radeon_sa_manager *sa_manager,
> - unsigned size, u32 align, u32 domain, u32 flags)
> + unsigned int size, u32 sa_align, u32 domain,
> + u32 flags)
> {
> - int i, r;
> -
> - init_waitqueue_head(&sa_manager->wq);
> - sa_manager->bo = NULL;
> - sa_manager->size = size;
> - sa_manager->domain = domain;
> - sa_manager->align = align;
> - sa_manager->hole = &sa_manager->olist;
> - INIT_LIST_HEAD(&sa_manager->olist);
> - for (i = 0; i < RADEON_NUM_RINGS; ++i) {
> - INIT_LIST_HEAD(&sa_manager->flist[i]);
> - }
> + int r;
>
> - r = radeon_bo_create(rdev, size, align, true,
> + r = radeon_bo_create(rdev, size, RADEON_GPU_PAGE_SIZE, true,
> domain, flags, NULL, NULL, &sa_manager->bo);
> if (r) {
> dev_err(rdev->dev, "(%d) failed to allocate bo for manager\n", r);
> return r;
> }
>
> + sa_manager->domain = domain;
> +
> + drm_suballoc_manager_init(&sa_manager->base, size, sa_align);
> +
> return r;
> }
>
> void radeon_sa_bo_manager_fini(struct radeon_device *rdev,
> struct radeon_sa_manager *sa_manager)
> {
> - struct radeon_sa_bo *sa_bo, *tmp;
> -
> - if (!list_empty(&sa_manager->olist)) {
> - sa_manager->hole = &sa_manager->olist,
> - radeon_sa_bo_try_free(sa_manager);
> - if (!list_empty(&sa_manager->olist)) {
> - dev_err(rdev->dev, "sa_manager is not empty, clearing anyway\n");
> - }
> - }
> - list_for_each_entry_safe(sa_bo, tmp, &sa_manager->olist, olist) {
> - radeon_sa_bo_remove_locked(sa_bo);
> - }
> + drm_suballoc_manager_fini(&sa_manager->base);
> radeon_bo_unref(&sa_manager->bo);
> - sa_manager->size = 0;
> }
>
> int radeon_sa_bo_manager_start(struct radeon_device *rdev,
> @@ -139,260 +118,34 @@ int radeon_sa_bo_manager_suspend(struct radeon_device *rdev,
> return r;
> }
>
> -static void radeon_sa_bo_remove_locked(struct radeon_sa_bo *sa_bo)
> +int radeon_sa_bo_new(struct radeon_sa_manager *sa_manager,
> + struct drm_suballoc **sa_bo,
> + unsigned int size, unsigned int align)
> {
> - struct radeon_sa_manager *sa_manager = sa_bo->manager;
> - if (sa_manager->hole == &sa_bo->olist) {
> - sa_manager->hole = sa_bo->olist.prev;
> - }
> - list_del_init(&sa_bo->olist);
> - list_del_init(&sa_bo->flist);
> - radeon_fence_unref(&sa_bo->fence);
> - kfree(sa_bo);
> -}
> -
> -static void radeon_sa_bo_try_free(struct radeon_sa_manager *sa_manager)
> -{
> - struct radeon_sa_bo *sa_bo, *tmp;
> -
> - if (sa_manager->hole->next == &sa_manager->olist)
> - return;
> + struct drm_suballoc *sa = drm_suballoc_new(&sa_manager->base, size,
> + GFP_KERNEL, true, align);
>
> - sa_bo = list_entry(sa_manager->hole->next, struct radeon_sa_bo, olist);
> - list_for_each_entry_safe_from(sa_bo, tmp, &sa_manager->olist, olist) {
> - if (sa_bo->fence == NULL || !radeon_fence_signaled(sa_bo->fence)) {
> - return;
> - }
> - radeon_sa_bo_remove_locked(sa_bo);
> + if (IS_ERR(sa)) {
> + *sa_bo = NULL;
> + return PTR_ERR(sa);
> }
> -}
>
> -static inline unsigned radeon_sa_bo_hole_soffset(struct radeon_sa_manager *sa_manager)
> -{
> - struct list_head *hole = sa_manager->hole;
> -
> - if (hole != &sa_manager->olist) {
> - return list_entry(hole, struct radeon_sa_bo, olist)->eoffset;
> - }
> + *sa_bo = sa;
> return 0;
> }
>
> -static inline unsigned radeon_sa_bo_hole_eoffset(struct radeon_sa_manager *sa_manager)
> -{
> - struct list_head *hole = sa_manager->hole;
> -
> - if (hole->next != &sa_manager->olist) {
> - return list_entry(hole->next, struct radeon_sa_bo, olist)->soffset;
> - }
> - return sa_manager->size;
> -}
> -
> -static bool radeon_sa_bo_try_alloc(struct radeon_sa_manager *sa_manager,
> - struct radeon_sa_bo *sa_bo,
> - unsigned size, unsigned align)
> -{
> - unsigned soffset, eoffset, wasted;
> -
> - soffset = radeon_sa_bo_hole_soffset(sa_manager);
> - eoffset = radeon_sa_bo_hole_eoffset(sa_manager);
> - wasted = (align - (soffset % align)) % align;
> -
> - if ((eoffset - soffset) >= (size + wasted)) {
> - soffset += wasted;
> -
> - sa_bo->manager = sa_manager;
> - sa_bo->soffset = soffset;
> - sa_bo->eoffset = soffset + size;
> - list_add(&sa_bo->olist, sa_manager->hole);
> - INIT_LIST_HEAD(&sa_bo->flist);
> - sa_manager->hole = &sa_bo->olist;
> - return true;
> - }
> - return false;
> -}
> -
> -/**
> - * radeon_sa_event - Check if we can stop waiting
> - *
> - * @sa_manager: pointer to the sa_manager
> - * @size: number of bytes we want to allocate
> - * @align: alignment we need to match
> - *
> - * Check if either there is a fence we can wait for or
> - * enough free memory to satisfy the allocation directly
> - */
> -static bool radeon_sa_event(struct radeon_sa_manager *sa_manager,
> - unsigned size, unsigned align)
> -{
> - unsigned soffset, eoffset, wasted;
> - int i;
> -
> - for (i = 0; i < RADEON_NUM_RINGS; ++i) {
> - if (!list_empty(&sa_manager->flist[i])) {
> - return true;
> - }
> - }
> -
> - soffset = radeon_sa_bo_hole_soffset(sa_manager);
> - eoffset = radeon_sa_bo_hole_eoffset(sa_manager);
> - wasted = (align - (soffset % align)) % align;
> -
> - if ((eoffset - soffset) >= (size + wasted)) {
> - return true;
> - }
> -
> - return false;
> -}
> -
> -static bool radeon_sa_bo_next_hole(struct radeon_sa_manager *sa_manager,
> - struct radeon_fence **fences,
> - unsigned *tries)
> -{
> - struct radeon_sa_bo *best_bo = NULL;
> - unsigned i, soffset, best, tmp;
> -
> - /* if hole points to the end of the buffer */
> - if (sa_manager->hole->next == &sa_manager->olist) {
> - /* try again with its beginning */
> - sa_manager->hole = &sa_manager->olist;
> - return true;
> - }
> -
> - soffset = radeon_sa_bo_hole_soffset(sa_manager);
> - /* to handle wrap around we add sa_manager->size */
> - best = sa_manager->size * 2;
> - /* go over all fence list and try to find the closest sa_bo
> - * of the current last
> - */
> - for (i = 0; i < RADEON_NUM_RINGS; ++i) {
> - struct radeon_sa_bo *sa_bo;
> -
> - fences[i] = NULL;
> -
> - if (list_empty(&sa_manager->flist[i])) {
> - continue;
> - }
> -
> - sa_bo = list_first_entry(&sa_manager->flist[i],
> - struct radeon_sa_bo, flist);
> -
> - if (!radeon_fence_signaled(sa_bo->fence)) {
> - fences[i] = sa_bo->fence;
> - continue;
> - }
> -
> - /* limit the number of tries each ring gets */
> - if (tries[i] > 2) {
> - continue;
> - }
> -
> - tmp = sa_bo->soffset;
> - if (tmp < soffset) {
> - /* wrap around, pretend it's after */
> - tmp += sa_manager->size;
> - }
> - tmp -= soffset;
> - if (tmp < best) {
> - /* this sa bo is the closest one */
> - best = tmp;
> - best_bo = sa_bo;
> - }
> - }
> -
> - if (best_bo) {
> - ++tries[best_bo->fence->ring];
> - sa_manager->hole = best_bo->olist.prev;
> -
> - /* we knew that this one is signaled,
> - so it's save to remote it */
> - radeon_sa_bo_remove_locked(best_bo);
> - return true;
> - }
> - return false;
> -}
> -
> -int radeon_sa_bo_new(struct radeon_device *rdev,
> - struct radeon_sa_manager *sa_manager,
> - struct radeon_sa_bo **sa_bo,
> - unsigned size, unsigned align)
> -{
> - struct radeon_fence *fences[RADEON_NUM_RINGS];
> - unsigned tries[RADEON_NUM_RINGS];
> - int i, r;
> -
> - BUG_ON(align > sa_manager->align);
> - BUG_ON(size > sa_manager->size);
> -
> - *sa_bo = kmalloc(sizeof(struct radeon_sa_bo), GFP_KERNEL);
> - if ((*sa_bo) == NULL) {
> - return -ENOMEM;
> - }
> - (*sa_bo)->manager = sa_manager;
> - (*sa_bo)->fence = NULL;
> - INIT_LIST_HEAD(&(*sa_bo)->olist);
> - INIT_LIST_HEAD(&(*sa_bo)->flist);
> -
> - spin_lock(&sa_manager->wq.lock);
> - do {
> - for (i = 0; i < RADEON_NUM_RINGS; ++i)
> - tries[i] = 0;
> -
> - do {
> - radeon_sa_bo_try_free(sa_manager);
> -
> - if (radeon_sa_bo_try_alloc(sa_manager, *sa_bo,
> - size, align)) {
> - spin_unlock(&sa_manager->wq.lock);
> - return 0;
> - }
> -
> - /* see if we can skip over some allocations */
> - } while (radeon_sa_bo_next_hole(sa_manager, fences, tries));
> -
> - for (i = 0; i < RADEON_NUM_RINGS; ++i)
> - radeon_fence_ref(fences[i]);
> -
> - spin_unlock(&sa_manager->wq.lock);
> - r = radeon_fence_wait_any(rdev, fences, false);
> - for (i = 0; i < RADEON_NUM_RINGS; ++i)
> - radeon_fence_unref(&fences[i]);
> - spin_lock(&sa_manager->wq.lock);
> - /* if we have nothing to wait for block */
> - if (r == -ENOENT) {
> - r = wait_event_interruptible_locked(
> - sa_manager->wq,
> - radeon_sa_event(sa_manager, size, align)
> - );
> - }
> -
> - } while (!r);
> -
> - spin_unlock(&sa_manager->wq.lock);
> - kfree(*sa_bo);
> - *sa_bo = NULL;
> - return r;
> -}
> -
> -void radeon_sa_bo_free(struct radeon_device *rdev, struct radeon_sa_bo **sa_bo,
> +void radeon_sa_bo_free(struct drm_suballoc **sa_bo,
> struct radeon_fence *fence)
> {
> - struct radeon_sa_manager *sa_manager;
> -
> if (sa_bo == NULL || *sa_bo == NULL) {
> return;
> }
>
> - sa_manager = (*sa_bo)->manager;
> - spin_lock(&sa_manager->wq.lock);
> - if (fence && !radeon_fence_signaled(fence)) {
> - (*sa_bo)->fence = radeon_fence_ref(fence);
> - list_add_tail(&(*sa_bo)->flist,
> - &sa_manager->flist[fence->ring]);
> - } else {
> - radeon_sa_bo_remove_locked(*sa_bo);
> - }
> - wake_up_all_locked(&sa_manager->wq);
> - spin_unlock(&sa_manager->wq.lock);
> + if (fence)
> + drm_suballoc_free(*sa_bo, &fence->base);
> + else
> + drm_suballoc_free(*sa_bo, NULL);
> +
> *sa_bo = NULL;
> }
>
> @@ -400,25 +153,8 @@ void radeon_sa_bo_free(struct radeon_device *rdev, struct radeon_sa_bo **sa_bo,
> void radeon_sa_bo_dump_debug_info(struct radeon_sa_manager *sa_manager,
> struct seq_file *m)
> {
> - struct radeon_sa_bo *i;
> + struct drm_printer p = drm_seq_file_printer(m);
>
> - spin_lock(&sa_manager->wq.lock);
> - list_for_each_entry(i, &sa_manager->olist, olist) {
> - uint64_t soffset = i->soffset + sa_manager->gpu_addr;
> - uint64_t eoffset = i->eoffset + sa_manager->gpu_addr;
> - if (&i->olist == sa_manager->hole) {
> - seq_printf(m, ">");
> - } else {
> - seq_printf(m, " ");
> - }
> - seq_printf(m, "[0x%010llx 0x%010llx] size %8lld",
> - soffset, eoffset, eoffset - soffset);
> - if (i->fence) {
> - seq_printf(m, " protected by 0x%016llx on ring %d",
> - i->fence->seq, i->fence->ring);
> - }
> - seq_printf(m, "\n");
> - }
> - spin_unlock(&sa_manager->wq.lock);
> + drm_suballoc_dump_debug_info(&sa_manager->base, &p, sa_manager->gpu_addr);
> }
> #endif
> diff --git a/drivers/gpu/drm/radeon/radeon_semaphore.c b/drivers/gpu/drm/radeon/radeon_semaphore.c
> index 221e59476f64..1f0a9a4ff5ae 100644
> --- a/drivers/gpu/drm/radeon/radeon_semaphore.c
> +++ b/drivers/gpu/drm/radeon/radeon_semaphore.c
> @@ -40,7 +40,7 @@ int radeon_semaphore_create(struct radeon_device *rdev,
> if (*semaphore == NULL) {
> return -ENOMEM;
> }
> - r = radeon_sa_bo_new(rdev, &rdev->ring_tmp_bo,
> + r = radeon_sa_bo_new(&rdev->ring_tmp_bo,
> &(*semaphore)->sa_bo, 8, 8);
> if (r) {
> kfree(*semaphore);
> @@ -100,7 +100,7 @@ void radeon_semaphore_free(struct radeon_device *rdev,
> dev_err(rdev->dev, "semaphore %p has more waiters than signalers,"
> " hardware lockup imminent!\n", *semaphore);
> }
> - radeon_sa_bo_free(rdev, &(*semaphore)->sa_bo, fence);
> + radeon_sa_bo_free(&(*semaphore)->sa_bo, fence);
> kfree(*semaphore);
> *semaphore = NULL;
> }
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