diff options
Diffstat (limited to 'drivers/gpu/arm/midgard/mali_kbase_mem_profile_debugfs.c')
-rwxr-xr-x | drivers/gpu/arm/midgard/mali_kbase_mem_profile_debugfs.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/drivers/gpu/arm/midgard/mali_kbase_mem_profile_debugfs.c b/drivers/gpu/arm/midgard/mali_kbase_mem_profile_debugfs.c new file mode 100755 index 000000000000..0b19d05c46e8 --- /dev/null +++ b/drivers/gpu/arm/midgard/mali_kbase_mem_profile_debugfs.c @@ -0,0 +1,118 @@ +/* + * + * (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 mem_profile debugfs file. + * + * This function is called to get the contents of the @c mem_profile debugfs + * file. This is a report of current memory usage and distribution in userspace. + * + * @param sfile The debugfs entry + * @param data Data associated with the entry + * + * @return 0 if it successfully prints data in debugfs entry file, non-zero otherwise + */ +static int kbasep_mem_profile_seq_show(struct seq_file *sfile, void *data) +{ + struct kbase_context *kctx = sfile->private; + + mutex_lock(&kctx->mem_profile_lock); + + seq_write(sfile, kctx->mem_profile_data, kctx->mem_profile_size); + + seq_putc(sfile, '\n'); + + mutex_unlock(&kctx->mem_profile_lock); + + return 0; +} + +/* + * File operations related to debugfs entry for mem_profile + */ +static int kbasep_mem_profile_debugfs_open(struct inode *in, struct file *file) +{ + return single_open(file, kbasep_mem_profile_seq_show, in->i_private); +} + +static const struct file_operations kbasep_mem_profile_debugfs_fops = { + .open = kbasep_mem_profile_debugfs_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +int kbasep_mem_profile_debugfs_insert(struct kbase_context *kctx, char *data, + size_t size) +{ + int err = 0; + + mutex_lock(&kctx->mem_profile_lock); + + dev_dbg(kctx->kbdev->dev, "initialised: %d", + kctx->mem_profile_initialized); + + if (!kctx->mem_profile_initialized) { + if (!debugfs_create_file("mem_profile", S_IRUGO, + kctx->kctx_dentry, kctx, + &kbasep_mem_profile_debugfs_fops)) { + err = -EAGAIN; + } else { + kctx->mem_profile_initialized = true; + } + } + + if (kctx->mem_profile_initialized) { + kfree(kctx->mem_profile_data); + kctx->mem_profile_data = data; + kctx->mem_profile_size = size; + } + + dev_dbg(kctx->kbdev->dev, "returning: %d, initialised: %d", + err, kctx->mem_profile_initialized); + + mutex_unlock(&kctx->mem_profile_lock); + + return err; +} + +void kbasep_mem_profile_debugfs_remove(struct kbase_context *kctx) +{ + mutex_lock(&kctx->mem_profile_lock); + + dev_dbg(kctx->kbdev->dev, "initialised: %d", + kctx->mem_profile_initialized); + + kfree(kctx->mem_profile_data); + kctx->mem_profile_data = NULL; + kctx->mem_profile_size = 0; + + mutex_unlock(&kctx->mem_profile_lock); +} + +#else /* CONFIG_DEBUG_FS */ + +int kbasep_mem_profile_debugfs_insert(struct kbase_context *kctx, char *data, + size_t size) +{ + kfree(data); + return 0; +} +#endif /* CONFIG_DEBUG_FS */ |