1 /*
2 * Copyright (c) 2006-2023, RT-Thread Development Team
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 *
6 * Change Logs:
7 * Date Author Notes
8 */
9
10 #include "proc.h"
11 #include "procfs.h"
12
13 #include <rthw.h>
14 #include <rtdbg.h>
15
16 #include <fcntl.h>
17 #include <errno.h>
18
19 #include <dfs_dentry.h>
20 #include <mm_page.h>
21
22
23 extern void rt_memory_info(rt_size_t *total,
24 rt_size_t *used,
25 rt_size_t *max_used);
26
single_show(struct dfs_seq_file * seq,void * data)27 static int single_show(struct dfs_seq_file *seq, void *data)
28 {
29 rt_size_t total, used, max_used, freed;
30 rt_size_t total_sum = 0;
31 rt_size_t total_freed = 0;
32
33 rt_memory_info(&total, &used, &max_used);
34 total_sum = total_sum + total;
35 total_freed = total_freed + total - used;
36
37 dfs_seq_printf(seq, "%-16s%8d KB\n", "MemMaxUsed:", max_used / 1024);
38 dfs_seq_printf(seq, "%-16s%8d KB\n", "MemAvailable:", (total - used) / 1024);
39 dfs_seq_printf(seq, "%-16s%8d KB\n", "Cached:", 0);
40 dfs_seq_printf(seq, "%-16s%8d KB\n", "SReclaimable:", 0);
41
42 rt_page_get_info(&total, &freed);
43 total_sum = total_sum + total * RT_MM_PAGE_SIZE;
44 total_freed = total_freed + freed * RT_MM_PAGE_SIZE;
45
46 dfs_seq_printf(seq, "%-16s%8d KB\n", "MemTotal:", total_sum / 1024);
47 dfs_seq_printf(seq, "%-16s%8d KB\n", "MemFree:", total_freed / 1024);
48 dfs_seq_printf(seq, "%-16s%8d KB\n", "LowPageTotal:", total * RT_MM_PAGE_SIZE / 1024);
49 dfs_seq_printf(seq, "%-16s%8d KB\n", "lowPageFree:", freed * RT_MM_PAGE_SIZE/ 1024);
50
51 rt_page_high_get_info(&total, &freed);
52
53 dfs_seq_printf(seq, "%-16s%8d KB\n", "HighPageTotal:", total * RT_MM_PAGE_SIZE / 1024);
54 dfs_seq_printf(seq, "%-16s%8d KB\n", "HighPageFree:", freed * RT_MM_PAGE_SIZE / 1024);
55
56 return 0;
57 }
58
proc_meminfo_init(void)59 int proc_meminfo_init(void)
60 {
61 struct proc_dentry *dentry = proc_create_single_data("meminfo", 0, NULL, single_show, NULL);
62 proc_release(dentry);
63
64 return 0;
65 }
66 INIT_ENV_EXPORT(proc_meminfo_init);
67