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/*
*
* (C) COPYRIGHT 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
/* mam_profile file name max length 22 based on format <int>_<int>\0 */
#define KBASEP_DEBUGFS_FNAME_SIZE_MAX (10+1+10+1)
void kbasep_mem_profile_debugfs_insert(struct kbase_context *kctx, char *data,
size_t size)
{
spin_lock(&kctx->mem_profile_lock);
kfree(kctx->mem_profile_data);
kctx->mem_profile_data = data;
kctx->mem_profile_size = size;
spin_unlock(&kctx->mem_profile_lock);
}
/** 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 successfully prints data in debugfs entry file
* -1 if it encountered an error
*/
static int kbasep_mem_profile_seq_show(struct seq_file *sfile, void *data)
{
struct kbase_context *kctx = sfile->private;
KBASE_DEBUG_ASSERT(kctx != NULL);
spin_lock(&kctx->mem_profile_lock);
seq_write(sfile, kctx->mem_profile_data, kctx->mem_profile_size);
seq_putc(sfile, '\n');
spin_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,
};
mali_error kbasep_mem_profile_debugfs_add(struct kbase_context *kctx)
{
char name[KBASEP_DEBUGFS_FNAME_SIZE_MAX];
KBASE_DEBUG_ASSERT(kctx != NULL);
spin_lock_init(&kctx->mem_profile_lock);
scnprintf(name, KBASEP_DEBUGFS_FNAME_SIZE_MAX, "%d_%d", kctx->pid,
kctx->id);
kctx->mem_dentry = debugfs_create_file(name, S_IRUGO,
kctx->kbdev->memory_profile_directory,
kctx, &kbasep_mem_profile_debugfs_fops);
if (IS_ERR(kctx->mem_dentry))
goto error_out;
return MALI_ERROR_NONE;
error_out:
return MALI_ERROR_FUNCTION_FAILED;
}
void kbasep_mem_profile_debugfs_remove(struct kbase_context *kctx)
{
KBASE_DEBUG_ASSERT(kctx != NULL);
spin_lock(&kctx->mem_profile_lock);
kfree(kctx->mem_profile_data);
kctx->mem_profile_data = NULL;
spin_unlock(&kctx->mem_profile_lock);
if (IS_ERR(kctx->mem_dentry))
return;
debugfs_remove(kctx->mem_dentry);
}
#else /* CONFIG_DEBUG_FS */
/**
* @brief Stub function for when debugfs is disabled
*/
mali_error kbasep_mem_profile_debugfs_add(struct kbase_context *ctx)
{
return MALI_ERROR_NONE;
}
/**
* @brief Stub function for when debugfs is disabled
*/
void kbasep_mem_profile_debugfs_remove(struct kbase_context *ctx)
{
}
/**
* @brief Stub function for when debugfs is disabled
*/
void kbasep_mem_profile_debugfs_insert(struct kbase_context *kctx, char *data,
size_t size)
{
kfree(data);
}
#endif /* CONFIG_DEBUG_FS */
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