112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
/****************************************************************************
|
|
* sched/sched/sched_sysinfo.c
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <sys/sysinfo.h>
|
|
#include <sys/types.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
|
|
#include <nuttx/clock.h>
|
|
#include <nuttx/kmalloc.h>
|
|
#include <nuttx/pgalloc.h>
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: sysinfo
|
|
*
|
|
* Description:
|
|
* sysinfo() returns certain statistics on memory and swap usage,
|
|
* as well as the load average.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int sysinfo(FAR struct sysinfo *info)
|
|
{
|
|
#ifndef CONFIG_SCHED_CPULOAD_NONE
|
|
struct cpuload_s cpuload;
|
|
#endif
|
|
#ifdef CONFIG_MM_PGALLOC
|
|
struct pginfo_s pginfo;
|
|
#endif
|
|
#if defined(MM_KERNEL_USRHEAP_INIT) || defined(CONFIG_MM_KERNEL_HEAP)
|
|
struct mallinfo minfo;
|
|
#endif
|
|
|
|
if (info == NULL)
|
|
{
|
|
set_errno(EINVAL);
|
|
return -1;
|
|
}
|
|
|
|
memset(info, 0, sizeof(*info));
|
|
|
|
#ifndef CONFIG_SCHED_CPULOAD_NONE
|
|
clock_cpuload(0, &cpuload);
|
|
|
|
/* On the simulator, you may hit cpuload.total == 0, but probably never
|
|
* on real hardware.
|
|
*/
|
|
|
|
if (cpuload.total)
|
|
{
|
|
info->loads[0] = ((cpuload.total - cpuload.active) <<
|
|
SI_LOAD_SHIFT) / cpuload.total;
|
|
info->loads[1] = info->loads[0];
|
|
info->loads[2] = info->loads[0];
|
|
}
|
|
#endif
|
|
|
|
#ifdef MM_KERNEL_USRHEAP_INIT
|
|
minfo = kumm_mallinfo();
|
|
|
|
info->totalram += minfo.arena;
|
|
info->freeram += minfo.fordblks;
|
|
#endif
|
|
|
|
#ifdef CONFIG_MM_KERNEL_HEAP
|
|
minfo = kmm_mallinfo();
|
|
|
|
info->totalram += minfo.arena;
|
|
info->freeram += minfo.fordblks;
|
|
#endif
|
|
|
|
#ifdef CONFIG_MM_PGALLOC
|
|
mm_pginfo(&pginfo);
|
|
|
|
info->totalram += pginfo.ntotal << MM_PGSHIFT;
|
|
info->freeram += pginfo.nfree << MM_PGSHIFT;
|
|
#endif
|
|
|
|
info->uptime = TICK2SEC(clock_systime_ticks());
|
|
info->procs = CONFIG_SMP_NCPUS;
|
|
info->mem_unit = 1;
|
|
|
|
return 0;
|
|
}
|