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/*
*
* (C) COPYRIGHT 2012-2016 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.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",
kbase_ctx_flag(kctx, KCTX_MEM_PROFILE_INITIALIZED));
if (!kbase_ctx_flag(kctx, KCTX_MEM_PROFILE_INITIALIZED)) {
if (!debugfs_create_file("mem_profile", S_IRUGO,
kctx->kctx_dentry, kctx,
&kbasep_mem_profile_debugfs_fops)) {
err = -EAGAIN;
} else {
kbase_ctx_flag_set(kctx,
KCTX_MEM_PROFILE_INITIALIZED);
}
}
if (kbase_ctx_flag(kctx, 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, kbase_ctx_flag(kctx, 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",
kbase_ctx_flag(kctx, 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 */
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