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Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0483-drm-vc4-Fix-overflow-mem-unreferencing-when-the-binn.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0483-drm-vc4-Fix-overflow-mem-unreferencing-when-the-binn.patch | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0483-drm-vc4-Fix-overflow-mem-unreferencing-when-the-binn.patch b/target/linux/brcm2708/patches-4.4/0483-drm-vc4-Fix-overflow-mem-unreferencing-when-the-binn.patch deleted file mode 100644 index fe0574a151..0000000000 --- a/target/linux/brcm2708/patches-4.4/0483-drm-vc4-Fix-overflow-mem-unreferencing-when-the-binn.patch +++ /dev/null @@ -1,57 +0,0 @@ -From a2f60ab34906ce29882cab71b1fcf81308a11009 Mon Sep 17 00:00:00 2001 -From: Eric Anholt <eric@anholt.net> -Date: Thu, 21 Jul 2016 13:39:11 -0700 -Subject: [PATCH] drm/vc4: Fix overflow mem unreferencing when the binner runs - dry. - -Overflow memory handling is tricky: While it's still referenced by the -BPO registers, we want to keep it from being freed. When we are -putting a new set of overflow memory in the registers, we need to -assign the old one to the last rendering job using it. - -We were looking at "what's currently running in the binner", but since -the bin/render submission split, we may end up with the binner -completing and having no new job while the renderer is still -processing. So, if we don't find a bin job at all, look at the -highest-seqno (last) render job to attach our overflow to. - -Signed-off-by: Eric Anholt <eric@anholt.net> -Fixes: ca26d28bbaa3 ("drm/vc4: improve throughput by pipelining binning and rendering jobs") -Cc: stable@vger.kernel.org ---- - drivers/gpu/drm/vc4/vc4_drv.h | 9 +++++++++ - drivers/gpu/drm/vc4/vc4_irq.c | 4 +++- - 2 files changed, 12 insertions(+), 1 deletion(-) - ---- a/drivers/gpu/drm/vc4/vc4_drv.h -+++ b/drivers/gpu/drm/vc4/vc4_drv.h -@@ -329,6 +329,15 @@ vc4_first_render_job(struct vc4_dev *vc4 - struct vc4_exec_info, head); - } - -+static inline struct vc4_exec_info * -+vc4_last_render_job(struct vc4_dev *vc4) -+{ -+ if (list_empty(&vc4->render_job_list)) -+ return NULL; -+ return list_last_entry(&vc4->render_job_list, -+ struct vc4_exec_info, head); -+} -+ - /** - * struct vc4_texture_sample_info - saves the offsets into the UBO for texture - * setup parameters. ---- a/drivers/gpu/drm/vc4/vc4_irq.c -+++ b/drivers/gpu/drm/vc4/vc4_irq.c -@@ -83,8 +83,10 @@ vc4_overflow_mem_work(struct work_struct - - spin_lock_irqsave(&vc4->job_lock, irqflags); - current_exec = vc4_first_bin_job(vc4); -+ if (!current_exec) -+ current_exec = vc4_last_render_job(vc4); - if (current_exec) { -- vc4->overflow_mem->seqno = vc4->finished_seqno + 1; -+ vc4->overflow_mem->seqno = current_exec->seqno; - list_add_tail(&vc4->overflow_mem->unref_head, - ¤t_exec->unref_list); - vc4->overflow_mem = NULL; |