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gpu: nvgpu: use inplace allocation in sync framework

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This change is the first of a series of changes to
support the usage of pre-allocated job tracking resources
in the submit path. With this change, we still maintain a
dynamically-allocated joblist, but make the necessary changes
in the channel_sync & fence framework to use in-place
allocations. Specifically, we:

1) Update channel sync framework routines to take in
pre-allocated priv_cmd_entry(s) & gk20a_fence(s) rather
than dynamically allocating themselves

2) Move allocation of priv_cmd_entry(s) & gk20a_fence(s)
to gk20a_submit_prepare_syncs

3) Modify fence framework to have seperate allocation
and init APIs. We expose allocation as a seperate API, so
the client can allocate the object before passing it into
the channel sync framework.

4) Fix clean_up logic in channel sync framework

Bug 1795076

Change-Id: I96db457683cd207fd029c31c45f548f98055e844
Signed-off-by: Sachit Kadle <skadle@nvidia.com>
Reviewed-on: http://git-master/r/1206725
(cherry picked from commit 9d196fd10db6c2f934c2a53b1fc0500eb4626624)
Reviewed-on: http://git-master/r/1223933
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Sachit Kadle
2016-08-22 18:06:30 -07:00
committed by mobile promotions
parent 3c2656c8c6
commit 63e8592e06
7 changed files with 275 additions and 175 deletions
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20
drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.h
View File

@@ -36,8 +36,8 @@ struct gk20a_channel_sync {
* cmdbuf is executed.
*/
int (*wait_syncpt)(struct gk20a_channel_sync *s, u32 id, u32 thresh,
struct priv_cmd_entry **entry,
struct gk20a_fence **fence);
struct priv_cmd_entry *entry,
struct gk20a_fence *fence);
/* Generate a gpu wait cmdbuf from sync fd.
* Returns
@@ -46,8 +46,8 @@ struct gk20a_channel_sync {
* cmdbuf is executed.
*/
int (*wait_fd)(struct gk20a_channel_sync *s, int fd,
struct priv_cmd_entry **entry,
struct gk20a_fence **fence);
struct priv_cmd_entry *entry,
struct gk20a_fence *fence);
/* Increment syncpoint/semaphore.
* Returns
@@ -55,8 +55,8 @@ struct gk20a_channel_sync {
* - a fence that can be passed to wait_cpu() and is_expired().
*/
int (*incr)(struct gk20a_channel_sync *s,
struct priv_cmd_entry **entry,
struct gk20a_fence **fence,
struct priv_cmd_entry *entry,
struct gk20a_fence *fence,
bool need_sync_fence);
/* Increment syncpoint/semaphore, preceded by a wfi.
@@ -65,8 +65,8 @@ struct gk20a_channel_sync {
* - a fence that can be passed to wait_cpu() and is_expired().
*/
int (*incr_wfi)(struct gk20a_channel_sync *s,
struct priv_cmd_entry **entry,
struct gk20a_fence **fence);
struct priv_cmd_entry *entry,
struct gk20a_fence *fence);
/* Increment syncpoint/semaphore, so that the returned fence represents
* work completion (may need wfi) and can be returned to user space.
@@ -77,8 +77,8 @@ struct gk20a_channel_sync {
*/
int (*incr_user)(struct gk20a_channel_sync *s,
int wait_fence_fd,
struct priv_cmd_entry **entry,
struct gk20a_fence **fence,
struct priv_cmd_entry *entry,
struct gk20a_fence *fence,
bool wfi,
bool need_sync_fence);