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/*
* PASS (Power Aware System Service) - Memory Resource Driver
*
* Copyright (c) 2022 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the License);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file resource-memory.c
* @brief TBD
* @ingroup TBD
*/
#include <glib.h>
#include <util/common.h>
#include <util/log.h>
#include <util/kernel.h>
#include <libsyscommon/resource-manager.h>
#include <libsyscommon/resource-type.h>
#include <resource-monitor/resource-monitor.h>
#define PROC_MEM_INFO_MEM_AVAILABLE "MemAvailable"
#define PROC_MEM_INFO_MEM_FREE "MemFree"
#define PROC_MEM_INFO_BUFFER "Buffers"
#define PROC_MEM_INFO_CACHED "Cached"
#define PROC_MEM_INFO_CMA_FREE "CmaFree"
#define PROC_MEM_INFO_SWAP_FREE "SwapFree"
static int memory_get_cma_total(u_int64_t *val)
{
static u_int64_t cma_total = 0;
int ret;
if (!cma_total) {
ret = kernel_get_memory_info("CmaTotal", &cma_total);
if (ret < 0) {
_E("failed to get system CMA total memory\n");
return -EINVAL;
}
}
*val = cma_total;
return 0;
}
static int memory_get_swap_total(u_int64_t *val)
{
static u_int64_t swap_total = 0;
int ret;
if (!swap_total) {
ret = kernel_get_memory_info("SwapTotal", &swap_total);
if (ret < 0) {
_E("failed to get system SWAP total memory\n");
return -EINVAL;
}
}
*val = swap_total;
return 0;
}
static int memory_get_memory_info(int resource_id,
const struct syscommon_resman_resource_attribute *attr,
void *data)
{
u_int64_t *val = (u_int64_t *)data;
int ret;
if (resource_id < 0 || !attr || !data)
return -EINVAL;
switch (attr->id) {
case MEMORY_ATTR_TOTAL:
ret = kernel_get_memory_total(val);
break;
case MEMORY_ATTR_AVAILABLE:
ret = kernel_get_memory_info(PROC_MEM_INFO_MEM_AVAILABLE, val);
break;
case MEMORY_ATTR_FREE:
ret = kernel_get_memory_info(PROC_MEM_INFO_MEM_FREE, val);
break;
case MEMORY_ATTR_BUFFER:
ret = kernel_get_memory_info(PROC_MEM_INFO_BUFFER, val);
break;
case MEMORY_ATTR_CACHED:
ret = kernel_get_memory_info(PROC_MEM_INFO_CACHED, val);
break;
case MEMORY_ATTR_CMA_TOTAL:
ret = memory_get_cma_total(val);
break;
case MEMORY_ATTR_CMA_FREE:
ret = kernel_get_memory_info(PROC_MEM_INFO_CMA_FREE, val);
break;
case MEMORY_ATTR_SWAP_TOTAL:
ret = memory_get_swap_total(val);
break;
case MEMORY_ATTR_SWAP_FREE:
ret = kernel_get_memory_info(PROC_MEM_INFO_SWAP_FREE, val);
break;
default:
_E("wrong memory resource attribute\n");
ret = -EINVAL;
}
if (ret < 0)
return -EINVAL;
return 0;
}
static const struct syscommon_resman_resource_attribute memory_attrs[] = {
{
.name = "MEMORY_ATTR_TOTAL",
.id = MEMORY_ATTR_TOTAL,
.type = SYSCOMMON_RESMAN_DATA_TYPE_UINT64,
.flag = SYSCOMMON_RESMAN_RESOURCE_ATTR_FLAG_PUBLIC,
.ops = {
.get = memory_get_memory_info,
},
}, {
.name = "MEMORY_ATTR_AVAILABLE",
.id = MEMORY_ATTR_AVAILABLE,
.type = SYSCOMMON_RESMAN_DATA_TYPE_UINT64,
.flag = SYSCOMMON_RESMAN_RESOURCE_ATTR_FLAG_PUBLIC,
.ops = {
.get = memory_get_memory_info,
},
}, {
.name = "MEMORY_ATTR_FREE",
.id = MEMORY_ATTR_FREE,
.type = SYSCOMMON_RESMAN_DATA_TYPE_UINT64,
.flag = SYSCOMMON_RESMAN_RESOURCE_ATTR_FLAG_PUBLIC,
.ops = {
.get = memory_get_memory_info,
}
}, {
.name = "MEMORY_ATTR_BUFFER",
.id = MEMORY_ATTR_BUFFER,
.type = SYSCOMMON_RESMAN_DATA_TYPE_UINT64,
.flag = SYSCOMMON_RESMAN_RESOURCE_ATTR_FLAG_PUBLIC,
.ops = {
.get = memory_get_memory_info,
}
}, {
.name = "MEMORY_ATTR_CACHED",
.id = MEMORY_ATTR_CACHED,
.type = SYSCOMMON_RESMAN_DATA_TYPE_UINT64,
.flag = SYSCOMMON_RESMAN_RESOURCE_ATTR_FLAG_PUBLIC,
.ops = {
.get = memory_get_memory_info,
}
}, {
.name = "MEMORY_ATTR_CMA_TOTAL",
.id = MEMORY_ATTR_CMA_TOTAL,
.type = SYSCOMMON_RESMAN_DATA_TYPE_UINT64,
.flag = SYSCOMMON_RESMAN_RESOURCE_ATTR_FLAG_PUBLIC,
.ops = {
.get = memory_get_memory_info,
}
}, {
.name = "MEMORY_ATTR_CMA_FREE",
.id = MEMORY_ATTR_CMA_FREE,
.type = SYSCOMMON_RESMAN_DATA_TYPE_UINT64,
.flag = SYSCOMMON_RESMAN_RESOURCE_ATTR_FLAG_PUBLIC,
.ops = {
.get = memory_get_memory_info,
}
}, {
.name = "MEMORY_ATTR_SWAP_TOTAL",
.id = MEMORY_ATTR_SWAP_TOTAL,
.type = SYSCOMMON_RESMAN_DATA_TYPE_UINT64,
.flag = SYSCOMMON_RESMAN_RESOURCE_ATTR_FLAG_PUBLIC,
.ops = {
.get = memory_get_memory_info,
}
}, {
.name = "MEMORY_ATTR_SWAP_FREE",
.id = MEMORY_ATTR_SWAP_FREE,
.type = SYSCOMMON_RESMAN_DATA_TYPE_UINT64,
.flag = SYSCOMMON_RESMAN_RESOURCE_ATTR_FLAG_PUBLIC,
.ops = {
.get = memory_get_memory_info,
}
},
};
static const struct syscommon_resman_resource_driver memory_resource_driver = {
.name = "MEMORY",
.type = RESOURCE_TYPE_MEMORY,
.flag = SYSCOMMON_RESMAN_RESOURCE_DRIVER_FLAG_COUNT_ONLY_ONE,
.attrs = memory_attrs,
.num_attrs = ARRAY_SIZE(memory_attrs),
};
SYSCOMMON_RESMAN_RESOURCE_DRIVER_REGISTER(&memory_resource_driver)
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