On Tue, 23 Mar 2021 at 15:51, Maarten Lankhorst
<maarten.lankhorst@xxxxxxxxxxxxxxx> wrote:
>
> This will allow us to explicitly pass the ww to pin_pages,
> when it starts taking it.
>
> This allows us to finally kill off the explicit passing of ww
> by retrieving it from the obj.
>
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
> ---
> .../gpu/drm/i915/gem/i915_gem_execbuffer.c | 7 ++++---
> drivers/gpu/drm/i915/gem/i915_gem_mman.c | 2 +-
> drivers/gpu/drm/i915/gem/i915_gem_object.h | 1 +
> .../gpu/drm/i915/gem/i915_gem_object_blt.c | 4 ++--
> drivers/gpu/drm/i915/gem/i915_gem_pages.c | 21 +++++++++++++++----
> .../drm/i915/gem/selftests/i915_gem_context.c | 8 ++++---
> .../drm/i915/gem/selftests/i915_gem_dmabuf.c | 2 +-
> drivers/gpu/drm/i915/gt/gen7_renderclear.c | 2 +-
> drivers/gpu/drm/i915/gt/intel_engine_cs.c | 2 +-
> drivers/gpu/drm/i915/gt/intel_engine_pm.c | 2 +-
> drivers/gpu/drm/i915/gt/intel_lrc.c | 4 ++--
> drivers/gpu/drm/i915/gt/intel_renderstate.c | 2 +-
> drivers/gpu/drm/i915/gt/intel_ring.c | 2 +-
> .../gpu/drm/i915/gt/intel_ring_submission.c | 2 +-
> drivers/gpu/drm/i915/gt/intel_timeline.c | 7 ++++---
> drivers/gpu/drm/i915/gt/intel_timeline.h | 3 ++-
> drivers/gpu/drm/i915/gt/intel_workarounds.c | 2 +-
> drivers/gpu/drm/i915/gt/mock_engine.c | 2 +-
> drivers/gpu/drm/i915/gt/selftest_lrc.c | 2 +-
> drivers/gpu/drm/i915/gt/selftest_rps.c | 10 ++++-----
> .../gpu/drm/i915/gt/selftest_workarounds.c | 6 +++---
> drivers/gpu/drm/i915/gvt/cmd_parser.c | 4 ++--
> drivers/gpu/drm/i915/i915_perf.c | 4 ++--
> drivers/gpu/drm/i915/selftests/igt_spinner.c | 2 +-
> 24 files changed, 60 insertions(+), 43 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
> index dcfcae9c841b..73dd2a7673f5 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
> @@ -1340,7 +1340,7 @@ static int __reloc_gpu_alloc(struct i915_execbuffer *eb,
> if (err)
> goto err_pool;
>
> - cmd = i915_gem_object_pin_map(pool->obj, pool->type);
> + cmd = i915_gem_object_pin_map(pool->obj, &eb->ww, pool->type);
> if (IS_ERR(cmd)) {
> err = PTR_ERR(cmd);
> goto err_pool;
> @@ -2489,7 +2489,8 @@ static int eb_parse_pipeline(struct i915_execbuffer *eb,
> goto err_shadow;
> }
>
> - pw->shadow_map = i915_gem_object_pin_map(shadow->obj, I915_MAP_WB);
> + pw->shadow_map = i915_gem_object_pin_map(shadow->obj, &eb->ww,
> + I915_MAP_WB);
> if (IS_ERR(pw->shadow_map)) {
> err = PTR_ERR(pw->shadow_map);
> goto err_trampoline;
> @@ -2500,7 +2501,7 @@ static int eb_parse_pipeline(struct i915_execbuffer *eb,
>
> pw->batch_map = ERR_PTR(-ENODEV);
> if (needs_clflush && i915_has_memcpy_from_wc())
> - pw->batch_map = i915_gem_object_pin_map(batch, I915_MAP_WC);
> + pw->batch_map = i915_gem_object_pin_map(batch, &eb->ww, I915_MAP_WC);
>
> if (IS_ERR(pw->batch_map)) {
> err = i915_gem_object_pin_pages(batch);
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/i915_gem_mman.c
> index 2561a2f1e54f..edac8ee3be9a 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_mman.c
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.c
> @@ -439,7 +439,7 @@ vm_access(struct vm_area_struct *area, unsigned long addr,
> goto out;
>
> /* As this is primarily for debugging, let's focus on simplicity */
> - vaddr = i915_gem_object_pin_map(obj, I915_MAP_FORCE_WC);
> + vaddr = i915_gem_object_pin_map(obj, &ww, I915_MAP_FORCE_WC);
> if (IS_ERR(vaddr)) {
> err = PTR_ERR(vaddr);
> goto out;
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h
> index 1a8ec4035112..9bd9b47dcc8d 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_object.h
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h
> @@ -450,6 +450,7 @@ void i915_gem_object_writeback(struct drm_i915_gem_object *obj);
> * ERR_PTR() on error.
> */
> void *__must_check i915_gem_object_pin_map(struct drm_i915_gem_object *obj,
> + struct i915_gem_ww_ctx *ww,
> enum i915_map_type type);
>
> void *__must_check i915_gem_object_pin_map_unlocked(struct drm_i915_gem_object *obj,
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object_blt.c b/drivers/gpu/drm/i915/gem/i915_gem_object_blt.c
> index df8e8c18c6c9..fae18622d2da 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_object_blt.c
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_object_blt.c
> @@ -58,7 +58,7 @@ struct i915_vma *intel_emit_vma_fill_blt(struct intel_context *ce,
> /* we pinned the pool, mark it as such */
> intel_gt_buffer_pool_mark_used(pool);
>
> - cmd = i915_gem_object_pin_map(pool->obj, pool->type);
> + cmd = i915_gem_object_pin_map(pool->obj, ww, pool->type);
> if (IS_ERR(cmd)) {
> err = PTR_ERR(cmd);
> goto out_unpin;
> @@ -283,7 +283,7 @@ struct i915_vma *intel_emit_vma_copy_blt(struct intel_context *ce,
> /* we pinned the pool, mark it as such */
> intel_gt_buffer_pool_mark_used(pool);
>
> - cmd = i915_gem_object_pin_map(pool->obj, pool->type);
> + cmd = i915_gem_object_pin_map(pool->obj, ww, pool->type);
> if (IS_ERR(cmd)) {
> err = PTR_ERR(cmd);
> goto out_unpin;
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pages.c b/drivers/gpu/drm/i915/gem/i915_gem_pages.c
> index 58e222030e10..232832398457 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_pages.c
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_pages.c
> @@ -341,6 +341,7 @@ static void *i915_gem_object_map_pfn(struct drm_i915_gem_object *obj,
>
> /* get, pin, and map the pages of the object into kernel space */
> void *i915_gem_object_pin_map(struct drm_i915_gem_object *obj,
> + struct i915_gem_ww_ctx *ww,
> enum i915_map_type type)
> {
> enum i915_map_type has_type;
> @@ -408,13 +409,25 @@ void *i915_gem_object_pin_map(struct drm_i915_gem_object *obj,
> void *i915_gem_object_pin_map_unlocked(struct drm_i915_gem_object *obj,
> enum i915_map_type type)
> {
> + struct i915_gem_ww_ctx ww;
> void *ret;
> + int err;
>
> - i915_gem_object_lock(obj, NULL);
> - ret = i915_gem_object_pin_map(obj, type);
> - i915_gem_object_unlock(obj);
> + i915_gem_ww_ctx_init(&ww, true);
> +retry:
> + err = i915_gem_object_lock(obj, &ww);
> + if (!err)
> + ret = i915_gem_object_pin_map(obj, &ww, type);
> + if (IS_ERR(ret))
This looks a little dodgy, since ret might not be initialized here,
say if we encounter an error when grabbing the lock?
Also maybe s/ret/ptr/? Seeing ret makes me think it's a plain integer.
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