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b81e9a2431
Add refcounting for TSGs and manage the refcounts as below : - initialize ref when TSG is opened - get ref when channel is bound to TSG - drop the ref when channel is unbound (i.e. during channel close) - drop the ref when TSG is closed - when refcount drops to zero, we free the TSG This refcounting makes it possible to close channels or TSG in any order Bug 1470692 Change-Id: Ia4b39164a4582c8169da62a91b9131094c67f5f8 Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: http://git-master/r/495667 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
/*
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* Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __TSG_GK20A_H_
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#define __TSG_GK20A_H_
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#define NVGPU_INVALID_TSG_ID (-1)
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bool gk20a_is_channel_marked_as_tsg(struct channel_gk20a *ch);
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int gk20a_tsg_dev_release(struct inode *inode, struct file *filp);
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int gk20a_tsg_dev_open(struct inode *inode, struct file *filp);
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long gk20a_tsg_dev_ioctl(struct file *filp,
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unsigned int cmd, unsigned long arg);
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int gk20a_init_tsg_support(struct gk20a *g, u32 tsgid);
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int gk20a_tsg_unbind_channel(struct channel_gk20a *ch);
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struct tsg_gk20a {
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struct gk20a *g;
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bool in_use;
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int tsgid;
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struct kref refcount;
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struct list_head ch_list;
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int num_active_channels;
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struct mutex ch_list_lock;
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struct gr_ctx_desc *tsg_gr_ctx;
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struct vm_gk20a *vm;
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};
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#endif /* __TSG_GK20A_H_ */
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