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gpu: nvgpu: Remove ref count from as_share

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Remove the broke ref counting from as_share. The ref-count is
incremented for every bind channel but never decremented. This
results in VMs never being freed.

Bug 1846718

Change-Id: I6253b3eab7c7471d3ed6feddb3705c49a8704bed
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1296900
Reviewed-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Alex Waterman
2017-01-31 15:49:40 -08:00
committed by mobile promotions
parent 7e403974d3
commit c6594c744d
2 changed files with 1 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/gpu/nvgpu/gk20a/as_gk20a.c
View File

@@ -54,7 +54,6 @@ int gk20a_as_alloc_share(struct gk20a_as *as,
as_share->as = as;
as_share->id = generate_as_share_id(as_share->as);
as_share->ref_cnt.counter = 1;
/* this will set as_share->vm. */
err = gk20a_busy(g->dev);
@@ -85,9 +84,6 @@ int gk20a_as_release_share(struct gk20a_as_share *as_share)
gk20a_dbg_fn("");
if (atomic_dec_return(&as_share->ref_cnt) > 0)
return 0;
err = gk20a_busy(g->dev);
if (err)
return err;
@@ -114,14 +110,10 @@ static int gk20a_as_ioctl_bind_channel(
if (!ch || gk20a_channel_as_bound(ch))
return -EINVAL;
atomic_inc(&as_share->ref_cnt);
/* this will set channel_gk20a->vm */
err = ch->g->ops.mm.vm_bind_channel(as_share, ch);
if (err) {
atomic_dec(&as_share->ref_cnt);
if (err)
return err;
}
return err;
}

1
drivers/gpu/nvgpu/gk20a/as_gk20a.h
View File

@@ -25,7 +25,6 @@ struct vm_gk20a;
struct gk20a_as_share {
struct gk20a_as *as;
atomic_t ref_cnt;
int id;
struct vm_gk20a *vm;
};