[PATCH 15/15] amdgpu: remove CONFIG_DRM_AMDGPU_USERPTR

[Christoph Hellwig]

The option is just used to select HMM mirror support and has a very
confusing help text.  Just pull in the HMM mirror code by default
instead.

Signed-off-by: Christoph Hellwig <hch at lst.de>
---
 drivers/gpu/drm/Kconfig                 |  2 ++
 drivers/gpu/drm/amd/amdgpu/Kconfig      | 10 ----------
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c |  6 ------
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 12 ------------
 4 files changed, 2 insertions(+), 28 deletions(-)

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 1d80222587ad..319c1da2e74e 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -226,9 +226,11 @@ config DRM_AMDGPU
 	select DRM_SCHED
         select DRM_TTM
 	select POWER_SUPPLY
+	select HMM_MIRROR
 	select HWMON
 	select BACKLIGHT_CLASS_DEVICE
 	select INTERVAL_TREE
+	select MMU_NOTIFIER
 	select CHASH
 	help
 	  Choose this option if you have a recent AMD Radeon graphics card.
diff --git a/drivers/gpu/drm/amd/amdgpu/Kconfig b/drivers/gpu/drm/amd/amdgpu/Kconfig
index 2e98c016cb47..c5c963164f5e 100644
--- a/drivers/gpu/drm/amd/amdgpu/Kconfig
+++ b/drivers/gpu/drm/amd/amdgpu/Kconfig
@@ -24,16 +24,6 @@ config DRM_AMDGPU_CIK
 
 	  radeon.cik_support=0 amdgpu.cik_support=1
 
-config DRM_AMDGPU_USERPTR
-	bool "Always enable userptr write support"
-	depends on DRM_AMDGPU
-	depends on MMU
-	select HMM_MIRROR
-	select MMU_NOTIFIER
-	help
-	  This option selects CONFIG_HMM and CONFIG_HMM_MIRROR if it
-	  isn't already selected to enabled full userptr support.
-
 config DRM_AMDGPU_GART_DEBUGFS
 	bool "Allow GART access through debugfs"
 	depends on DRM_AMDGPU
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 8bf79288c4e2..00b74adbd790 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -751,9 +751,7 @@ struct amdgpu_ttm_tt {
 	uint64_t		userptr;
 	struct task_struct	*usertask;
 	uint32_t		userflags;
-#if IS_ENABLED(CONFIG_DRM_AMDGPU_USERPTR)
 	struct hmm_range	*range;
-#endif
 };
 
 /**
@@ -763,7 +761,6 @@ struct amdgpu_ttm_tt {
  * Calling function must call amdgpu_ttm_tt_userptr_range_done() once and only
  * once afterwards to stop HMM tracking
  */
-#if IS_ENABLED(CONFIG_DRM_AMDGPU_USERPTR)
 
 #define MAX_RETRY_HMM_RANGE_FAULT	16
 
@@ -892,7 +889,6 @@ bool amdgpu_ttm_tt_get_user_pages_done(struct ttm_tt *ttm)
 
 	return r;
 }
-#endif
 
 /**
  * amdgpu_ttm_tt_set_user_pages - Copy pages in, putting old pages as necessary.
@@ -970,12 +966,10 @@ static void amdgpu_ttm_tt_unpin_userptr(struct ttm_tt *ttm)
 
 	sg_free_table(ttm->sg);
 
-#if IS_ENABLED(CONFIG_DRM_AMDGPU_USERPTR)
 	if (gtt->range &&
 	    ttm->pages[0] == hmm_device_entry_to_page(gtt->range,
 						      gtt->range->pfns[0]))
 		WARN_ONCE(1, "Missing get_user_page_done\n");
-#endif
 }
 
 int amdgpu_ttm_gart_bind(struct amdgpu_device *adev,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
index caa76c693700..406b1c5e6dd4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
@@ -101,20 +101,8 @@ int amdgpu_mmap(struct file *filp, struct vm_area_struct *vma);
 int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo);
 int amdgpu_ttm_recover_gart(struct ttm_buffer_object *tbo);
 
-#if IS_ENABLED(CONFIG_DRM_AMDGPU_USERPTR)
 int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo, struct page **pages);
 bool amdgpu_ttm_tt_get_user_pages_done(struct ttm_tt *ttm);
-#else
-static inline int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo,
-					       struct page **pages)
-{
-	return -EPERM;
-}
-static inline bool amdgpu_ttm_tt_get_user_pages_done(struct ttm_tt *ttm)
-{
-	return false;
-}
-#endif
 
 void amdgpu_ttm_tt_set_user_pages(struct ttm_tt *ttm, struct page **pages);
 int amdgpu_ttm_tt_set_userptr(struct ttm_tt *ttm, uint64_t addr,
-- 
2.20.1