1 // SPDX-License-Identifier: GPL-2.0
3 #include <linux/init.h>
4 #include <linux/kernel.h>
6 #include <linux/hugetlb.h>
7 #include <linux/mman.h>
8 #include <linux/mmzone.h>
9 #include <linux/proc_fs.h>
10 #include <linux/percpu.h>
11 #include <linux/seq_file.h>
12 #include <linux/swap.h>
13 #include <linux/vmstat.h>
14 #include <linux/atomic.h>
15 #include <linux/vmalloc.h>
17 #include <linux/cma.h>
22 void __attribute__((weak
)) arch_report_meminfo(struct seq_file
*m
)
26 static void show_val_kb(struct seq_file
*m
, const char *s
, unsigned long num
)
28 seq_put_decimal_ull_width(m
, s
, num
<< (PAGE_SHIFT
- 10), 8);
29 seq_write(m
, " kB\n", 4);
32 static int meminfo_proc_show(struct seq_file
*m
, void *v
)
35 unsigned long committed
;
38 unsigned long pages
[NR_LRU_LISTS
];
39 unsigned long sreclaimable
, sunreclaim
;
44 committed
= vm_memory_committed();
46 cached
= global_node_page_state(NR_FILE_PAGES
) -
47 total_swapcache_pages() - i
.bufferram
;
51 for (lru
= LRU_BASE
; lru
< NR_LRU_LISTS
; lru
++)
52 pages
[lru
] = global_node_page_state(NR_LRU_BASE
+ lru
);
54 available
= si_mem_available();
55 sreclaimable
= global_node_page_state_pages(NR_SLAB_RECLAIMABLE_B
);
56 sunreclaim
= global_node_page_state_pages(NR_SLAB_UNRECLAIMABLE_B
);
58 show_val_kb(m
, "MemTotal: ", i
.totalram
);
59 show_val_kb(m
, "MemFree: ", i
.freeram
);
60 show_val_kb(m
, "MemAvailable: ", available
);
61 show_val_kb(m
, "Buffers: ", i
.bufferram
);
62 show_val_kb(m
, "Cached: ", cached
);
63 show_val_kb(m
, "SwapCached: ", total_swapcache_pages());
64 show_val_kb(m
, "Active: ", pages
[LRU_ACTIVE_ANON
] +
65 pages
[LRU_ACTIVE_FILE
]);
66 show_val_kb(m
, "Inactive: ", pages
[LRU_INACTIVE_ANON
] +
67 pages
[LRU_INACTIVE_FILE
]);
68 show_val_kb(m
, "Active(anon): ", pages
[LRU_ACTIVE_ANON
]);
69 show_val_kb(m
, "Inactive(anon): ", pages
[LRU_INACTIVE_ANON
]);
70 show_val_kb(m
, "Active(file): ", pages
[LRU_ACTIVE_FILE
]);
71 show_val_kb(m
, "Inactive(file): ", pages
[LRU_INACTIVE_FILE
]);
72 show_val_kb(m
, "Unevictable: ", pages
[LRU_UNEVICTABLE
]);
73 show_val_kb(m
, "Mlocked: ", global_zone_page_state(NR_MLOCK
));
76 show_val_kb(m
, "HighTotal: ", i
.totalhigh
);
77 show_val_kb(m
, "HighFree: ", i
.freehigh
);
78 show_val_kb(m
, "LowTotal: ", i
.totalram
- i
.totalhigh
);
79 show_val_kb(m
, "LowFree: ", i
.freeram
- i
.freehigh
);
83 show_val_kb(m
, "MmapCopy: ",
84 (unsigned long)atomic_long_read(&mmap_pages_allocated
));
87 show_val_kb(m
, "SwapTotal: ", i
.totalswap
);
88 show_val_kb(m
, "SwapFree: ", i
.freeswap
);
89 show_val_kb(m
, "Dirty: ",
90 global_node_page_state(NR_FILE_DIRTY
));
91 show_val_kb(m
, "Writeback: ",
92 global_node_page_state(NR_WRITEBACK
));
93 show_val_kb(m
, "AnonPages: ",
94 global_node_page_state(NR_ANON_MAPPED
));
95 show_val_kb(m
, "Mapped: ",
96 global_node_page_state(NR_FILE_MAPPED
));
97 show_val_kb(m
, "Shmem: ", i
.sharedram
);
98 show_val_kb(m
, "KReclaimable: ", sreclaimable
+
99 global_node_page_state(NR_KERNEL_MISC_RECLAIMABLE
));
100 show_val_kb(m
, "Slab: ", sreclaimable
+ sunreclaim
);
101 show_val_kb(m
, "SReclaimable: ", sreclaimable
);
102 show_val_kb(m
, "SUnreclaim: ", sunreclaim
);
103 seq_printf(m
, "KernelStack: %8lu kB\n",
104 global_node_page_state(NR_KERNEL_STACK_KB
));
105 #ifdef CONFIG_SHADOW_CALL_STACK
106 seq_printf(m
, "ShadowCallStack:%8lu kB\n",
107 global_node_page_state(NR_KERNEL_SCS_KB
));
109 show_val_kb(m
, "PageTables: ",
110 global_zone_page_state(NR_PAGETABLE
));
112 show_val_kb(m
, "NFS_Unstable: ", 0);
113 show_val_kb(m
, "Bounce: ",
114 global_zone_page_state(NR_BOUNCE
));
115 show_val_kb(m
, "WritebackTmp: ",
116 global_node_page_state(NR_WRITEBACK_TEMP
));
117 show_val_kb(m
, "CommitLimit: ", vm_commit_limit());
118 show_val_kb(m
, "Committed_AS: ", committed
);
119 seq_printf(m
, "VmallocTotal: %8lu kB\n",
120 (unsigned long)VMALLOC_TOTAL
>> 10);
121 show_val_kb(m
, "VmallocUsed: ", vmalloc_nr_pages());
122 show_val_kb(m
, "VmallocChunk: ", 0ul);
123 show_val_kb(m
, "Percpu: ", pcpu_nr_pages());
125 #ifdef CONFIG_MEMORY_FAILURE
126 seq_printf(m
, "HardwareCorrupted: %5lu kB\n",
127 atomic_long_read(&num_poisoned_pages
) << (PAGE_SHIFT
- 10));
130 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
131 show_val_kb(m
, "AnonHugePages: ",
132 global_node_page_state(NR_ANON_THPS
) * HPAGE_PMD_NR
);
133 show_val_kb(m
, "ShmemHugePages: ",
134 global_node_page_state(NR_SHMEM_THPS
) * HPAGE_PMD_NR
);
135 show_val_kb(m
, "ShmemPmdMapped: ",
136 global_node_page_state(NR_SHMEM_PMDMAPPED
) * HPAGE_PMD_NR
);
137 show_val_kb(m
, "FileHugePages: ",
138 global_node_page_state(NR_FILE_THPS
) * HPAGE_PMD_NR
);
139 show_val_kb(m
, "FilePmdMapped: ",
140 global_node_page_state(NR_FILE_PMDMAPPED
) * HPAGE_PMD_NR
);
144 show_val_kb(m
, "CmaTotal: ", totalcma_pages
);
145 show_val_kb(m
, "CmaFree: ",
146 global_zone_page_state(NR_FREE_CMA_PAGES
));
149 hugetlb_report_meminfo(m
);
151 arch_report_meminfo(m
);
156 static int __init
proc_meminfo_init(void)
158 proc_create_single("meminfo", 0, NULL
, meminfo_proc_show
);
161 fs_initcall(proc_meminfo_init
);