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7134e9e852
This change solves crashes during bind that were introduced in the driver during the OS unification refactoring due to lack of coverage of the remove() function. The fixes during remove are: (1) Prevent NULL dereference on GPUs with secure boot (2) Prevent NULL dereferences when fecs_trace is not enabled (3) Added PRAMIN blocker during driver removal if HW is no longer accesible (4) Prevent double free of debugfs nodes as they are handled on the debugfs_remove_recursive() call (5) quiesce() can now be called without checking is HW accesible flag is set (6) added function to free irq so no IRQ association is left on the driver after it is removed (7) prevent NULL dereference on nvgpu_thread_stop() if the thread is already stopped JIRA: EVLR-1739 Change-Id: I787d38f202d5267a6b34815f23e1bc88110e8455 Signed-off-by: David Nieto <dmartineznie@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1563005 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
/*
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* Copyright (C) 2017 NVIDIA Corporation. All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include "debug_allocator.h"
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#include "os_linux.h"
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <nvgpu/allocator.h>
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static int __alloc_show(struct seq_file *s, void *unused)
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{
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struct nvgpu_allocator *a = s->private;
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nvgpu_alloc_print_stats(a, s, 1);
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return 0;
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}
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static int __alloc_open(struct inode *inode, struct file *file)
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{
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return single_open(file, __alloc_show, inode->i_private);
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}
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static const struct file_operations __alloc_fops = {
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.open = __alloc_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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void nvgpu_init_alloc_debug(struct gk20a *g, struct nvgpu_allocator *a)
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{
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struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
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if (!l->debugfs_allocators)
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return;
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a->debugfs_entry = debugfs_create_file(a->name, S_IRUGO,
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l->debugfs_allocators,
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a, &__alloc_fops);
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}
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void nvgpu_fini_alloc_debug(struct nvgpu_allocator *a)
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{
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}
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void nvgpu_alloc_debugfs_init(struct gk20a *g)
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{
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struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
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l->debugfs_allocators = debugfs_create_dir("allocators", l->debugfs);
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if (IS_ERR_OR_NULL(l->debugfs_allocators)) {
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l->debugfs_allocators = NULL;
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return;
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}
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}
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