1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/fs.h>
3 #include <linux/init.h>
4 #include <linux/kernel.h>
5 #include <linux/mm.h>
6 #include <linux/hugetlb.h>
7 #include <linux/mman.h>
8 #include <linux/mmzone.h>
9 #include <linux/memblock.h>
10 #include <linux/proc_fs.h>
11 #include <linux/percpu.h>
12 #include <linux/seq_file.h>
13 #include <linux/swap.h>
14 #include <linux/vmstat.h>
15 #include <linux/atomic.h>
16 #include <linux/vmalloc.h>
17 #ifdef CONFIG_CMA
18 #include <linux/cma.h>
19 #endif
20 #include <linux/zswap.h>
21 #include <trace/hooks/mm.h>
22 #include <asm/page.h>
23 #include "internal.h"
24 #include <trace/hooks/mm.h>
25
arch_report_meminfo(struct seq_file * m)26 void __attribute__((weak)) arch_report_meminfo(struct seq_file *m)
27 {
28 }
29
show_val_kb(struct seq_file * m,const char * s,unsigned long num)30 static void show_val_kb(struct seq_file *m, const char *s, unsigned long num)
31 {
32 seq_put_decimal_ull_width(m, s, num << (PAGE_SHIFT - 10), 8);
33 seq_write(m, " kB\n", 4);
34 }
35
meminfo_proc_show(struct seq_file * m,void * v)36 static int meminfo_proc_show(struct seq_file *m, void *v)
37 {
38 struct sysinfo i;
39 unsigned long committed;
40 long cached;
41 long available;
42 unsigned long pages[NR_LRU_LISTS];
43 unsigned long sreclaimable, sunreclaim;
44 int lru;
45
46 si_meminfo(&i);
47 si_swapinfo(&i);
48 committed = vm_memory_committed();
49
50 cached = global_node_page_state(NR_FILE_PAGES) -
51 total_swapcache_pages() - i.bufferram;
52 trace_android_vh_meminfo_cache_adjust(&cached);
53 if (cached < 0)
54 cached = 0;
55
56 for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++)
57 pages[lru] = global_node_page_state(NR_LRU_BASE + lru);
58
59 available = si_mem_available();
60 sreclaimable = global_node_page_state_pages(NR_SLAB_RECLAIMABLE_B);
61 sunreclaim = global_node_page_state_pages(NR_SLAB_UNRECLAIMABLE_B);
62
63 show_val_kb(m, "MemTotal: ", i.totalram);
64 show_val_kb(m, "MemFree: ", i.freeram);
65 show_val_kb(m, "MemAvailable: ", available);
66 show_val_kb(m, "Buffers: ", i.bufferram);
67 show_val_kb(m, "Cached: ", cached);
68 show_val_kb(m, "SwapCached: ", total_swapcache_pages());
69 show_val_kb(m, "Active: ", pages[LRU_ACTIVE_ANON] +
70 pages[LRU_ACTIVE_FILE]);
71 show_val_kb(m, "Inactive: ", pages[LRU_INACTIVE_ANON] +
72 pages[LRU_INACTIVE_FILE]);
73 show_val_kb(m, "Active(anon): ", pages[LRU_ACTIVE_ANON]);
74 show_val_kb(m, "Inactive(anon): ", pages[LRU_INACTIVE_ANON]);
75 show_val_kb(m, "Active(file): ", pages[LRU_ACTIVE_FILE]);
76 show_val_kb(m, "Inactive(file): ", pages[LRU_INACTIVE_FILE]);
77 show_val_kb(m, "Unevictable: ", pages[LRU_UNEVICTABLE]);
78 show_val_kb(m, "Mlocked: ", global_zone_page_state(NR_MLOCK));
79
80 #ifdef CONFIG_HIGHMEM
81 show_val_kb(m, "HighTotal: ", i.totalhigh);
82 show_val_kb(m, "HighFree: ", i.freehigh);
83 show_val_kb(m, "LowTotal: ", i.totalram - i.totalhigh);
84 show_val_kb(m, "LowFree: ", i.freeram - i.freehigh);
85 #endif
86
87 #ifndef CONFIG_MMU
88 show_val_kb(m, "MmapCopy: ",
89 (unsigned long)atomic_long_read(&mmap_pages_allocated));
90 #endif
91
92 show_val_kb(m, "SwapTotal: ", i.totalswap);
93 show_val_kb(m, "SwapFree: ", i.freeswap);
94 #ifdef CONFIG_ZSWAP
95 show_val_kb(m, "Zswap: ", zswap_total_pages());
96 seq_printf(m, "Zswapped: %8lu kB\n",
97 (unsigned long)atomic_read(&zswap_stored_pages) <<
98 (PAGE_SHIFT - 10));
99 #endif
100 show_val_kb(m, "Dirty: ",
101 global_node_page_state(NR_FILE_DIRTY));
102 show_val_kb(m, "Writeback: ",
103 global_node_page_state(NR_WRITEBACK));
104 show_val_kb(m, "AnonPages: ",
105 global_node_page_state(NR_ANON_MAPPED));
106 show_val_kb(m, "Mapped: ",
107 global_node_page_state(NR_FILE_MAPPED));
108 show_val_kb(m, "Shmem: ", i.sharedram);
109 show_val_kb(m, "KReclaimable: ", sreclaimable +
110 global_node_page_state(NR_KERNEL_MISC_RECLAIMABLE));
111 show_val_kb(m, "Slab: ", sreclaimable + sunreclaim);
112 show_val_kb(m, "SReclaimable: ", sreclaimable);
113 show_val_kb(m, "SUnreclaim: ", sunreclaim);
114 seq_printf(m, "KernelStack: %8lu kB\n",
115 global_node_page_state(NR_KERNEL_STACK_KB));
116 #ifdef CONFIG_SHADOW_CALL_STACK
117 seq_printf(m, "ShadowCallStack:%8lu kB\n",
118 global_node_page_state(NR_KERNEL_SCS_KB));
119 #endif
120 show_val_kb(m, "PageTables: ",
121 global_node_page_state(NR_PAGETABLE));
122 show_val_kb(m, "SecPageTables: ",
123 global_node_page_state(NR_SECONDARY_PAGETABLE));
124
125 show_val_kb(m, "NFS_Unstable: ", 0);
126 show_val_kb(m, "Bounce: ",
127 global_zone_page_state(NR_BOUNCE));
128 show_val_kb(m, "WritebackTmp: ",
129 global_node_page_state(NR_WRITEBACK_TEMP));
130 show_val_kb(m, "CommitLimit: ", vm_commit_limit());
131 show_val_kb(m, "Committed_AS: ", committed);
132 seq_printf(m, "VmallocTotal: %8lu kB\n",
133 (unsigned long)VMALLOC_TOTAL >> 10);
134 show_val_kb(m, "VmallocUsed: ", vmalloc_nr_pages());
135 show_val_kb(m, "VmallocChunk: ", 0ul);
136 show_val_kb(m, "Percpu: ", pcpu_nr_pages());
137
138 memtest_report_meminfo(m);
139
140 #ifdef CONFIG_MEMORY_FAILURE
141 seq_printf(m, "HardwareCorrupted: %5lu kB\n",
142 atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10));
143 #endif
144
145 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
146 show_val_kb(m, "AnonHugePages: ",
147 global_node_page_state(NR_ANON_THPS));
148 show_val_kb(m, "ShmemHugePages: ",
149 global_node_page_state(NR_SHMEM_THPS));
150 show_val_kb(m, "ShmemPmdMapped: ",
151 global_node_page_state(NR_SHMEM_PMDMAPPED));
152 show_val_kb(m, "FileHugePages: ",
153 global_node_page_state(NR_FILE_THPS));
154 show_val_kb(m, "FilePmdMapped: ",
155 global_node_page_state(NR_FILE_PMDMAPPED));
156 #endif
157
158 #ifdef CONFIG_CMA
159 show_val_kb(m, "CmaTotal: ", totalcma_pages);
160 show_val_kb(m, "CmaFree: ",
161 global_zone_page_state(NR_FREE_CMA_PAGES));
162 #endif
163 trace_android_vh_meminfo_proc_show(m);
164 trace_android_rvh_meminfo_proc_show(m);
165
166 #ifdef CONFIG_UNACCEPTED_MEMORY
167 show_val_kb(m, "Unaccepted: ",
168 global_zone_page_state(NR_UNACCEPTED));
169 #endif
170
171 hugetlb_report_meminfo(m);
172
173 arch_report_meminfo(m);
174
175 return 0;
176 }
177
proc_meminfo_init(void)178 static int __init proc_meminfo_init(void)
179 {
180 struct proc_dir_entry *pde;
181
182 pde = proc_create_single("meminfo", 0, NULL, meminfo_proc_show);
183 pde_make_permanent(pde);
184 return 0;
185 }
186 fs_initcall(proc_meminfo_init);
187