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// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
/*
*
* (C) COPYRIGHT 2012-2023 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation, and any use by you of this program is subject to the terms
* of such GNU license.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you can access it online at
* http://www.gnu.org/licenses/gpl-2.0.html.
*
*/
#include <mali_kbase.h>
#include <device/mali_kbase_device.h>
#if IS_ENABLED(CONFIG_DEBUG_FS)
/**
* kbasep_gpu_memory_seq_show - Show callback for the @c gpu_memory debugfs file
* @sfile: The debugfs entry
* @data: Data associated with the entry
*
* This function is called to get the contents of the @c gpu_memory debugfs
* file. This is a report of current gpu memory usage.
*
* Return:
* * 0 if successfully prints data in debugfs entry file
* * -1 if it encountered an error
*/
static int kbasep_gpu_memory_seq_show(struct seq_file *sfile, void *data)
{
struct list_head *entry;
const struct list_head *kbdev_list;
CSTD_UNUSED(data);
kbdev_list = kbase_device_get_list();
list_for_each(entry, kbdev_list) {
struct kbase_device *kbdev = NULL;
struct kbase_context *kctx;
kbdev = list_entry(entry, struct kbase_device, entry);
/* output the total memory usage and cap for this device */
seq_printf(sfile, "%-16s %10u\n", kbdev->devname,
atomic_read(&(kbdev->memdev.used_pages)));
mutex_lock(&kbdev->kctx_list_lock);
list_for_each_entry(kctx, &kbdev->kctx_list, kctx_list_link) {
/* output the memory usage and cap for each kctx
* opened on this device
*/
seq_printf(sfile, " %s-0x%pK %10u\n", "kctx", kctx,
atomic_read(&(kctx->used_pages)));
}
mutex_unlock(&kbdev->kctx_list_lock);
}
kbase_device_put_list(kbdev_list);
return 0;
}
/*
* File operations related to debugfs entry for gpu_memory
*/
static int kbasep_gpu_memory_debugfs_open(struct inode *in, struct file *file)
{
CSTD_UNUSED(in);
return single_open(file, kbasep_gpu_memory_seq_show, NULL);
}
static const struct file_operations kbasep_gpu_memory_debugfs_fops = {
.owner = THIS_MODULE,
.open = kbasep_gpu_memory_debugfs_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
/*
* Initialize debugfs entry for gpu_memory
*/
void kbasep_gpu_memory_debugfs_init(struct kbase_device *kbdev)
{
debugfs_create_file("gpu_memory", 0444, kbdev->mali_debugfs_directory, NULL,
&kbasep_gpu_memory_debugfs_fops);
}
#else
/*
* Stub functions for when debugfs is disabled
*/
void kbasep_gpu_memory_debugfs_init(struct kbase_device *kbdev)
{
}
#endif
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