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d40e2df1b2
When kernel command line debugfs=off is specified instead of disabling CONFIG_DEBUG_FS in defconfig to disable Debug-FS, debugfs functions like debugfs_create_dir will fail. Use function debugfs_initialized() to check if debugfs functionality is enabled before calling any debugfs functions. This allows us to by-pass debugfs initialization if debugfs is not enabled. Also, there is no need to protect debugfs related code under CONFIG_DEBUG_FS, as stub functions for all debugfs APIs are defined when CONFIG_DEBUG_FS is disabled. Bug 3752450 Change-Id: I1aa2c46bc822da54fdc87504ac75c91845e02c12 Signed-off-by: Bharat Nihalani <bnihalani@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2820666 Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com> Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com> Reviewed-by: Suresh Venkatachalam <skathirampat@nvidia.com> Reviewed-by: Dara Ramesh <dramesh@nvidia.com> GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
97 lines
2.2 KiB
C
97 lines
2.2 KiB
C
/*
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* aram_managerc
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*
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* ARAM manager
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*
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* Copyright (C) 2014-2022, 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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#define pr_fmt(fmt) "%s : %d, " fmt, __func__, __LINE__
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#include <linux/debugfs.h>
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#include <linux/tegra_nvadsp.h>
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#include "aram_manager.h"
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static void *aram_handle;
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static LIST_HEAD(aram_alloc_list);
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static LIST_HEAD(aram_free_list);
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void nvadsp_aram_print(void)
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{
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mem_print(aram_handle);
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}
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void *nvadsp_aram_request(const char *name, size_t size)
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{
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return mem_request(aram_handle, name, size);
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}
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bool nvadsp_aram_release(void *handle)
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{
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return mem_release(aram_handle, handle);
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}
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unsigned long nvadsp_aram_get_address(void *handle)
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{
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return mem_get_address(handle);
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}
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static struct dentry *aram_dump_debugfs_file;
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static int nvadsp_aram_dump(struct seq_file *s, void *data)
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{
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mem_dump(aram_handle, s);
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return 0;
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}
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static int nvadsp_aram_dump_open(struct inode *inode, struct file *file)
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{
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return single_open(file, nvadsp_aram_dump, inode->i_private);
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}
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static const struct file_operations aram_dump_fops = {
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.open = nvadsp_aram_dump_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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int nvadsp_aram_init(unsigned long addr, unsigned long size)
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{
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aram_handle = create_mem_manager("ARAM", addr, size);
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if (IS_ERR(aram_handle)) {
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pr_err("ERROR: failed to create aram memory_manager");
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return PTR_ERR(aram_handle);
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}
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if (debugfs_initialized()) {
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aram_dump_debugfs_file = debugfs_create_file("aram_dump",
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S_IRUSR, NULL, NULL, &aram_dump_fops);
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if (!aram_dump_debugfs_file) {
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pr_err("ERROR: failed to create aram_dump debugfs");
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destroy_mem_manager(aram_handle);
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return -ENOMEM;
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}
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}
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return 0;
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}
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void nvadsp_aram_exit(void)
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{
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debugfs_remove(aram_dump_debugfs_file);
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destroy_mem_manager(aram_handle);
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}
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