diff options
Diffstat (limited to 'drivers/gpu/arm/midgard/mali_kbase_gpu_memory_debugfs.c')
-rw-r--r-- | drivers/gpu/arm/midgard/mali_kbase_gpu_memory_debugfs.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/drivers/gpu/arm/midgard/mali_kbase_gpu_memory_debugfs.c b/drivers/gpu/arm/midgard/mali_kbase_gpu_memory_debugfs.c new file mode 100644 index 000000000000..ca264049653c --- /dev/null +++ b/drivers/gpu/arm/midgard/mali_kbase_gpu_memory_debugfs.c @@ -0,0 +1,98 @@ +/* + * + * (C) COPYRIGHT 2012-2015 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 licence. + * + * A copy of the licence is included with the program, and can also be obtained + * from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + */ + + + +#include <mali_kbase_gpu_memory_debugfs.h> + +#ifdef CONFIG_DEBUG_FS +/** Show callback for the @c gpu_memory debugfs file. + * + * This function is called to get the contents of the @c gpu_memory debugfs + * file. This is a report of current gpu memory usage. + * + * @param sfile The debugfs entry + * @param data Data associated with the entry + * + * @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) +{ + ssize_t ret = 0; + struct list_head *entry; + const struct list_head *kbdev_list; + + kbdev_list = kbase_dev_list_get(); + list_for_each(entry, kbdev_list) { + struct kbase_device *kbdev = NULL; + struct kbasep_kctx_list_element *element; + + kbdev = list_entry(entry, struct kbase_device, entry); + /* output the total memory usage and cap for this device */ + ret = seq_printf(sfile, "%-16s %10u\n", + kbdev->devname, + atomic_read(&(kbdev->memdev.used_pages))); + mutex_lock(&kbdev->kctx_list_lock); + list_for_each_entry(element, &kbdev->kctx_list, link) { + /* output the memory usage and cap for each kctx + * opened on this device */ + ret = seq_printf(sfile, " %s-0x%p %10u\n", + "kctx", + element->kctx, + atomic_read(&(element->kctx->used_pages))); + } + mutex_unlock(&kbdev->kctx_list_lock); + } + kbase_dev_list_put(kbdev_list); + return ret; +} + +/* + * File operations related to debugfs entry for gpu_memory + */ +static int kbasep_gpu_memory_debugfs_open(struct inode *in, struct file *file) +{ + return single_open(file, kbasep_gpu_memory_seq_show , NULL); +} + +static const struct file_operations kbasep_gpu_memory_debugfs_fops = { + .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", S_IRUGO, + kbdev->mali_debugfs_directory, NULL, + &kbasep_gpu_memory_debugfs_fops); + return; +} + +#else +/* + * Stub functions for when debugfs is disabled + */ +void kbasep_gpu_memory_debugfs_init(struct kbase_device *kbdev) +{ + return; +} +#endif |