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v3.5.6
  1#include <linux/fs.h>
  2#include <linux/hugetlb.h>
  3#include <linux/init.h>
  4#include <linux/kernel.h>
  5#include <linux/mm.h>
 
  6#include <linux/mman.h>
  7#include <linux/mmzone.h>
  8#include <linux/proc_fs.h>
  9#include <linux/quicklist.h>
 10#include <linux/seq_file.h>
 11#include <linux/swap.h>
 12#include <linux/vmstat.h>
 13#include <linux/atomic.h>
 
 
 
 
 14#include <asm/page.h>
 15#include <asm/pgtable.h>
 16#include "internal.h"
 17
 18void __attribute__((weak)) arch_report_meminfo(struct seq_file *m)
 19{
 20}
 21
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 22static int meminfo_proc_show(struct seq_file *m, void *v)
 23{
 24	struct sysinfo i;
 25	unsigned long committed;
 26	unsigned long allowed;
 27	struct vmalloc_info vmi;
 28	long cached;
 
 29	unsigned long pages[NR_LRU_LISTS];
 30	int lru;
 31
 32/*
 33 * display in kilobytes.
 34 */
 35#define K(x) ((x) << (PAGE_SHIFT - 10))
 36	si_meminfo(&i);
 37	si_swapinfo(&i);
 38	committed = percpu_counter_read_positive(&vm_committed_as);
 39	allowed = ((totalram_pages - hugetlb_total_pages())
 40		* sysctl_overcommit_ratio / 100) + total_swap_pages;
 41
 42	cached = global_page_state(NR_FILE_PAGES) -
 43			total_swapcache_pages - i.bufferram;
 44	if (cached < 0)
 45		cached = 0;
 46
 47	get_vmalloc_info(&vmi);
 48
 49	for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++)
 50		pages[lru] = global_page_state(NR_LRU_BASE + lru);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 51
 52	/*
 53	 * Tagged format, for easy grepping and expansion.
 54	 */
 55	seq_printf(m,
 56		"MemTotal:       %8lu kB\n"
 57		"MemFree:        %8lu kB\n"
 58		"Buffers:        %8lu kB\n"
 59		"Cached:         %8lu kB\n"
 60		"SwapCached:     %8lu kB\n"
 61		"Active:         %8lu kB\n"
 62		"Inactive:       %8lu kB\n"
 63		"Active(anon):   %8lu kB\n"
 64		"Inactive(anon): %8lu kB\n"
 65		"Active(file):   %8lu kB\n"
 66		"Inactive(file): %8lu kB\n"
 67		"Unevictable:    %8lu kB\n"
 68		"Mlocked:        %8lu kB\n"
 69#ifdef CONFIG_HIGHMEM
 70		"HighTotal:      %8lu kB\n"
 71		"HighFree:       %8lu kB\n"
 72		"LowTotal:       %8lu kB\n"
 73		"LowFree:        %8lu kB\n"
 74#endif
 
 75#ifndef CONFIG_MMU
 76		"MmapCopy:       %8lu kB\n"
 
 77#endif
 78		"SwapTotal:      %8lu kB\n"
 79		"SwapFree:       %8lu kB\n"
 80		"Dirty:          %8lu kB\n"
 81		"Writeback:      %8lu kB\n"
 82		"AnonPages:      %8lu kB\n"
 83		"Mapped:         %8lu kB\n"
 84		"Shmem:          %8lu kB\n"
 85		"Slab:           %8lu kB\n"
 86		"SReclaimable:   %8lu kB\n"
 87		"SUnreclaim:     %8lu kB\n"
 88		"KernelStack:    %8lu kB\n"
 89		"PageTables:     %8lu kB\n"
 
 
 
 
 
 
 
 
 
 
 
 
 90#ifdef CONFIG_QUICKLIST
 91		"Quicklists:     %8lu kB\n"
 92#endif
 93		"NFS_Unstable:   %8lu kB\n"
 94		"Bounce:         %8lu kB\n"
 95		"WritebackTmp:   %8lu kB\n"
 96		"CommitLimit:    %8lu kB\n"
 97		"Committed_AS:   %8lu kB\n"
 98		"VmallocTotal:   %8lu kB\n"
 99		"VmallocUsed:    %8lu kB\n"
100		"VmallocChunk:   %8lu kB\n"
 
 
 
 
 
 
101#ifdef CONFIG_MEMORY_FAILURE
102		"HardwareCorrupted: %5lu kB\n"
103#endif
104#ifdef CONFIG_TRANSPARENT_HUGEPAGE
105		"AnonHugePages:  %8lu kB\n"
106#endif
107		,
108		K(i.totalram),
109		K(i.freeram),
110		K(i.bufferram),
111		K(cached),
112		K(total_swapcache_pages),
113		K(pages[LRU_ACTIVE_ANON]   + pages[LRU_ACTIVE_FILE]),
114		K(pages[LRU_INACTIVE_ANON] + pages[LRU_INACTIVE_FILE]),
115		K(pages[LRU_ACTIVE_ANON]),
116		K(pages[LRU_INACTIVE_ANON]),
117		K(pages[LRU_ACTIVE_FILE]),
118		K(pages[LRU_INACTIVE_FILE]),
119		K(pages[LRU_UNEVICTABLE]),
120		K(global_page_state(NR_MLOCK)),
121#ifdef CONFIG_HIGHMEM
122		K(i.totalhigh),
123		K(i.freehigh),
124		K(i.totalram-i.totalhigh),
125		K(i.freeram-i.freehigh),
126#endif
127#ifndef CONFIG_MMU
128		K((unsigned long) atomic_long_read(&mmap_pages_allocated)),
129#endif
130		K(i.totalswap),
131		K(i.freeswap),
132		K(global_page_state(NR_FILE_DIRTY)),
133		K(global_page_state(NR_WRITEBACK)),
134#ifdef CONFIG_TRANSPARENT_HUGEPAGE
135		K(global_page_state(NR_ANON_PAGES)
136		  + global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *
137		  HPAGE_PMD_NR),
138#else
139		K(global_page_state(NR_ANON_PAGES)),
140#endif
141		K(global_page_state(NR_FILE_MAPPED)),
142		K(global_page_state(NR_SHMEM)),
143		K(global_page_state(NR_SLAB_RECLAIMABLE) +
144				global_page_state(NR_SLAB_UNRECLAIMABLE)),
145		K(global_page_state(NR_SLAB_RECLAIMABLE)),
146		K(global_page_state(NR_SLAB_UNRECLAIMABLE)),
147		global_page_state(NR_KERNEL_STACK) * THREAD_SIZE / 1024,
148		K(global_page_state(NR_PAGETABLE)),
149#ifdef CONFIG_QUICKLIST
150		K(quicklist_total_size()),
151#endif
152		K(global_page_state(NR_UNSTABLE_NFS)),
153		K(global_page_state(NR_BOUNCE)),
154		K(global_page_state(NR_WRITEBACK_TEMP)),
155		K(allowed),
156		K(committed),
157		(unsigned long)VMALLOC_TOTAL >> 10,
158		vmi.used >> 10,
159		vmi.largest_chunk >> 10
160#ifdef CONFIG_MEMORY_FAILURE
161		,atomic_long_read(&mce_bad_pages) << (PAGE_SHIFT - 10)
162#endif
163#ifdef CONFIG_TRANSPARENT_HUGEPAGE
164		,K(global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *
165		   HPAGE_PMD_NR)
166#endif
167		);
168
169	hugetlb_report_meminfo(m);
170
171	arch_report_meminfo(m);
172
173	return 0;
174#undef K
175}
176
177static int meminfo_proc_open(struct inode *inode, struct file *file)
178{
179	return single_open(file, meminfo_proc_show, NULL);
180}
181
182static const struct file_operations meminfo_proc_fops = {
183	.open		= meminfo_proc_open,
184	.read		= seq_read,
185	.llseek		= seq_lseek,
186	.release	= single_release,
187};
188
189static int __init proc_meminfo_init(void)
190{
191	proc_create("meminfo", 0, NULL, &meminfo_proc_fops);
192	return 0;
193}
194module_init(proc_meminfo_init);
v4.10.11
  1#include <linux/fs.h>
 
  2#include <linux/init.h>
  3#include <linux/kernel.h>
  4#include <linux/mm.h>
  5#include <linux/hugetlb.h>
  6#include <linux/mman.h>
  7#include <linux/mmzone.h>
  8#include <linux/proc_fs.h>
  9#include <linux/quicklist.h>
 10#include <linux/seq_file.h>
 11#include <linux/swap.h>
 12#include <linux/vmstat.h>
 13#include <linux/atomic.h>
 14#include <linux/vmalloc.h>
 15#ifdef CONFIG_CMA
 16#include <linux/cma.h>
 17#endif
 18#include <asm/page.h>
 19#include <asm/pgtable.h>
 20#include "internal.h"
 21
 22void __attribute__((weak)) arch_report_meminfo(struct seq_file *m)
 23{
 24}
 25
 26static void show_val_kb(struct seq_file *m, const char *s, unsigned long num)
 27{
 28	char v[32];
 29	static const char blanks[7] = {' ', ' ', ' ', ' ',' ', ' ', ' '};
 30	int len;
 31
 32	len = num_to_str(v, sizeof(v), num << (PAGE_SHIFT - 10));
 33
 34	seq_write(m, s, 16);
 35
 36	if (len > 0) {
 37		if (len < 8)
 38			seq_write(m, blanks, 8 - len);
 39
 40		seq_write(m, v, len);
 41	}
 42	seq_write(m, " kB\n", 4);
 43}
 44
 45static int meminfo_proc_show(struct seq_file *m, void *v)
 46{
 47	struct sysinfo i;
 48	unsigned long committed;
 
 
 49	long cached;
 50	long available;
 51	unsigned long pages[NR_LRU_LISTS];
 52	int lru;
 53
 
 
 
 
 54	si_meminfo(&i);
 55	si_swapinfo(&i);
 56	committed = percpu_counter_read_positive(&vm_committed_as);
 
 
 57
 58	cached = global_node_page_state(NR_FILE_PAGES) -
 59			total_swapcache_pages() - i.bufferram;
 60	if (cached < 0)
 61		cached = 0;
 62
 
 
 63	for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++)
 64		pages[lru] = global_node_page_state(NR_LRU_BASE + lru);
 65
 66	available = si_mem_available();
 67
 68	show_val_kb(m, "MemTotal:       ", i.totalram);
 69	show_val_kb(m, "MemFree:        ", i.freeram);
 70	show_val_kb(m, "MemAvailable:   ", available);
 71	show_val_kb(m, "Buffers:        ", i.bufferram);
 72	show_val_kb(m, "Cached:         ", cached);
 73	show_val_kb(m, "SwapCached:     ", total_swapcache_pages());
 74	show_val_kb(m, "Active:         ", pages[LRU_ACTIVE_ANON] +
 75					   pages[LRU_ACTIVE_FILE]);
 76	show_val_kb(m, "Inactive:       ", pages[LRU_INACTIVE_ANON] +
 77					   pages[LRU_INACTIVE_FILE]);
 78	show_val_kb(m, "Active(anon):   ", pages[LRU_ACTIVE_ANON]);
 79	show_val_kb(m, "Inactive(anon): ", pages[LRU_INACTIVE_ANON]);
 80	show_val_kb(m, "Active(file):   ", pages[LRU_ACTIVE_FILE]);
 81	show_val_kb(m, "Inactive(file): ", pages[LRU_INACTIVE_FILE]);
 82	show_val_kb(m, "Unevictable:    ", pages[LRU_UNEVICTABLE]);
 83	show_val_kb(m, "Mlocked:        ", global_page_state(NR_MLOCK));
 84
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 85#ifdef CONFIG_HIGHMEM
 86	show_val_kb(m, "HighTotal:      ", i.totalhigh);
 87	show_val_kb(m, "HighFree:       ", i.freehigh);
 88	show_val_kb(m, "LowTotal:       ", i.totalram - i.totalhigh);
 89	show_val_kb(m, "LowFree:        ", i.freeram - i.freehigh);
 90#endif
 91
 92#ifndef CONFIG_MMU
 93	show_val_kb(m, "MmapCopy:       ",
 94		    (unsigned long)atomic_long_read(&mmap_pages_allocated));
 95#endif
 96
 97	show_val_kb(m, "SwapTotal:      ", i.totalswap);
 98	show_val_kb(m, "SwapFree:       ", i.freeswap);
 99	show_val_kb(m, "Dirty:          ",
100		    global_node_page_state(NR_FILE_DIRTY));
101	show_val_kb(m, "Writeback:      ",
102		    global_node_page_state(NR_WRITEBACK));
103	show_val_kb(m, "AnonPages:      ",
104		    global_node_page_state(NR_ANON_MAPPED));
105	show_val_kb(m, "Mapped:         ",
106		    global_node_page_state(NR_FILE_MAPPED));
107	show_val_kb(m, "Shmem:          ", i.sharedram);
108	show_val_kb(m, "Slab:           ",
109		    global_page_state(NR_SLAB_RECLAIMABLE) +
110		    global_page_state(NR_SLAB_UNRECLAIMABLE));
111
112	show_val_kb(m, "SReclaimable:   ",
113		    global_page_state(NR_SLAB_RECLAIMABLE));
114	show_val_kb(m, "SUnreclaim:     ",
115		    global_page_state(NR_SLAB_UNRECLAIMABLE));
116	seq_printf(m, "KernelStack:    %8lu kB\n",
117		   global_page_state(NR_KERNEL_STACK_KB));
118	show_val_kb(m, "PageTables:     ",
119		    global_page_state(NR_PAGETABLE));
120#ifdef CONFIG_QUICKLIST
121	show_val_kb(m, "Quicklists:     ", quicklist_total_size());
122#endif
123
124	show_val_kb(m, "NFS_Unstable:   ",
125		    global_node_page_state(NR_UNSTABLE_NFS));
126	show_val_kb(m, "Bounce:         ",
127		    global_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:    ", 0ul);
135	show_val_kb(m, "VmallocChunk:   ", 0ul);
136
137#ifdef CONFIG_MEMORY_FAILURE
138	seq_printf(m, "HardwareCorrupted: %5lu kB\n",
139		   atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10));
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
140#endif
141
 
 
 
142#ifdef CONFIG_TRANSPARENT_HUGEPAGE
143	show_val_kb(m, "AnonHugePages:  ",
144		    global_node_page_state(NR_ANON_THPS) * HPAGE_PMD_NR);
145	show_val_kb(m, "ShmemHugePages: ",
146		    global_node_page_state(NR_SHMEM_THPS) * HPAGE_PMD_NR);
147	show_val_kb(m, "ShmemPmdMapped: ",
148		    global_node_page_state(NR_SHMEM_PMDMAPPED) * HPAGE_PMD_NR);
 
 
 
 
 
 
 
 
 
 
149#endif
150
151#ifdef CONFIG_CMA
152	show_val_kb(m, "CmaTotal:       ", totalcma_pages);
153	show_val_kb(m, "CmaFree:        ",
154		    global_page_state(NR_FREE_CMA_PAGES));
 
 
 
 
 
 
 
 
 
155#endif
 
156
157	hugetlb_report_meminfo(m);
158
159	arch_report_meminfo(m);
160
161	return 0;
 
162}
163
164static int meminfo_proc_open(struct inode *inode, struct file *file)
165{
166	return single_open(file, meminfo_proc_show, NULL);
167}
168
169static const struct file_operations meminfo_proc_fops = {
170	.open		= meminfo_proc_open,
171	.read		= seq_read,
172	.llseek		= seq_lseek,
173	.release	= single_release,
174};
175
176static int __init proc_meminfo_init(void)
177{
178	proc_create("meminfo", 0, NULL, &meminfo_proc_fops);
179	return 0;
180}
181fs_initcall(proc_meminfo_init);