Contributors: 46
Author Tokens Token Proportion Commits Commit Proportion
Joe Perches 323 32.01% 1 1.11%
Alexey Dobriyan 221 21.90% 3 3.33%
Rik Van Riel 58 5.75% 2 2.22%
Linus Torvalds (pre-git) 54 5.35% 12 13.33%
Andi Kleen 37 3.67% 2 2.22%
Johannes Weiner 32 3.17% 3 3.33%
Kirill A. Shutemov 29 2.87% 4 4.44%
Pintu Kumar 25 2.48% 1 1.11%
Vlastimil Babka 25 2.48% 1 1.11%
David Howells 22 2.18% 4 4.44%
Christoph Lameter 17 1.68% 7 7.78%
Martin Hicks 17 1.68% 1 1.11%
Song Liu 16 1.59% 1 1.11%
Sami Tolvanen 16 1.59% 1 1.11%
Mel Gorman 11 1.09% 4 4.44%
Dennis Zhou 10 0.99% 1 1.11%
Linus Torvalds 9 0.89% 4 4.44%
Andrea Arcangeli 9 0.89% 1 1.11%
Andrew Morton 6 0.59% 4 4.44%
Roman Gushchin 6 0.59% 2 2.22%
Tomas Mudrunka 6 0.59% 1 1.11%
Yosry Ahmed 5 0.50% 2 2.22%
Motohiro Kosaki 4 0.40% 2 2.22%
Claudio Scordino 4 0.40% 1 1.11%
Miklos Szeredi 4 0.40% 1 1.11%
Randy Dunlap 4 0.40% 1 1.11%
Shakeel Butt 3 0.30% 2 2.22%
Tejun Heo 3 0.30% 1 1.11%
Andrey Vagin 3 0.30% 1 1.11%
Rafael Aquini 3 0.30% 1 1.11%
Christoph Hellwig 3 0.30% 2 2.22%
Michal Hocko 3 0.30% 1 1.11%
Yinghai Lu 3 0.30% 2 2.22%
Feng Tang 2 0.20% 1 1.11%
Russell King 2 0.20% 1 1.11%
Igor Redko 2 0.20% 1 1.11%
Jerome Marchand 2 0.20% 1 1.11%
Shaohua Li 2 0.20% 1 1.11%
Frank Hirtz 1 0.10% 1 1.11%
Arun Sharma 1 0.10% 1 1.11%
Xishi Qiu 1 0.10% 1 1.11%
Paul Gortmaker 1 0.10% 1 1.11%
Neil Brown 1 0.10% 1 1.11%
Kefeng Wang 1 0.10% 1 1.11%
Greg Kroah-Hartman 1 0.10% 1 1.11%
Andrew Lutomirski 1 0.10% 1 1.11%
Total 1009 90


// SPDX-License-Identifier: GPL-2.0
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/hugetlb.h>
#include <linux/mman.h>
#include <linux/mmzone.h>
#include <linux/memblock.h>
#include <linux/proc_fs.h>
#include <linux/percpu.h>
#include <linux/seq_file.h>
#include <linux/swap.h>
#include <linux/vmstat.h>
#include <linux/atomic.h>
#include <linux/vmalloc.h>
#ifdef CONFIG_CMA
#include <linux/cma.h>
#endif
#include <linux/zswap.h>
#include <asm/page.h>
#include "internal.h"

void __attribute__((weak)) arch_report_meminfo(struct seq_file *m)
{
}

static void show_val_kb(struct seq_file *m, const char *s, unsigned long num)
{
	seq_put_decimal_ull_width(m, s, num << (PAGE_SHIFT - 10), 8);
	seq_write(m, " kB\n", 4);
}

static int meminfo_proc_show(struct seq_file *m, void *v)
{
	struct sysinfo i;
	unsigned long committed;
	long cached;
	long available;
	unsigned long pages[NR_LRU_LISTS];
	unsigned long sreclaimable, sunreclaim;
	int lru;

	si_meminfo(&i);
	si_swapinfo(&i);
	committed = vm_memory_committed();

	cached = global_node_page_state(NR_FILE_PAGES) -
			total_swapcache_pages() - i.bufferram;
	if (cached < 0)
		cached = 0;

	for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++)
		pages[lru] = global_node_page_state(NR_LRU_BASE + lru);

	available = si_mem_available();
	sreclaimable = global_node_page_state_pages(NR_SLAB_RECLAIMABLE_B);
	sunreclaim = global_node_page_state_pages(NR_SLAB_UNRECLAIMABLE_B);

	show_val_kb(m, "MemTotal:       ", i.totalram);
	show_val_kb(m, "MemFree:        ", i.freeram);
	show_val_kb(m, "MemAvailable:   ", available);
	show_val_kb(m, "Buffers:        ", i.bufferram);
	show_val_kb(m, "Cached:         ", cached);
	show_val_kb(m, "SwapCached:     ", total_swapcache_pages());
	show_val_kb(m, "Active:         ", pages[LRU_ACTIVE_ANON] +
					   pages[LRU_ACTIVE_FILE]);
	show_val_kb(m, "Inactive:       ", pages[LRU_INACTIVE_ANON] +
					   pages[LRU_INACTIVE_FILE]);
	show_val_kb(m, "Active(anon):   ", pages[LRU_ACTIVE_ANON]);
	show_val_kb(m, "Inactive(anon): ", pages[LRU_INACTIVE_ANON]);
	show_val_kb(m, "Active(file):   ", pages[LRU_ACTIVE_FILE]);
	show_val_kb(m, "Inactive(file): ", pages[LRU_INACTIVE_FILE]);
	show_val_kb(m, "Unevictable:    ", pages[LRU_UNEVICTABLE]);
	show_val_kb(m, "Mlocked:        ", global_zone_page_state(NR_MLOCK));

#ifdef CONFIG_HIGHMEM
	show_val_kb(m, "HighTotal:      ", i.totalhigh);
	show_val_kb(m, "HighFree:       ", i.freehigh);
	show_val_kb(m, "LowTotal:       ", i.totalram - i.totalhigh);
	show_val_kb(m, "LowFree:        ", i.freeram - i.freehigh);
#endif

#ifndef CONFIG_MMU
	show_val_kb(m, "MmapCopy:       ",
		    (unsigned long)atomic_long_read(&mmap_pages_allocated));
#endif

	show_val_kb(m, "SwapTotal:      ", i.totalswap);
	show_val_kb(m, "SwapFree:       ", i.freeswap);
#ifdef CONFIG_ZSWAP
	seq_printf(m,  "Zswap:          %8lu kB\n",
		   (unsigned long)(zswap_pool_total_size >> 10));
	seq_printf(m,  "Zswapped:       %8lu kB\n",
		   (unsigned long)atomic_read(&zswap_stored_pages) <<
		   (PAGE_SHIFT - 10));
#endif
	show_val_kb(m, "Dirty:          ",
		    global_node_page_state(NR_FILE_DIRTY));
	show_val_kb(m, "Writeback:      ",
		    global_node_page_state(NR_WRITEBACK));
	show_val_kb(m, "AnonPages:      ",
		    global_node_page_state(NR_ANON_MAPPED));
	show_val_kb(m, "Mapped:         ",
		    global_node_page_state(NR_FILE_MAPPED));
	show_val_kb(m, "Shmem:          ", i.sharedram);
	show_val_kb(m, "KReclaimable:   ", sreclaimable +
		    global_node_page_state(NR_KERNEL_MISC_RECLAIMABLE));
	show_val_kb(m, "Slab:           ", sreclaimable + sunreclaim);
	show_val_kb(m, "SReclaimable:   ", sreclaimable);
	show_val_kb(m, "SUnreclaim:     ", sunreclaim);
	seq_printf(m, "KernelStack:    %8lu kB\n",
		   global_node_page_state(NR_KERNEL_STACK_KB));
#ifdef CONFIG_SHADOW_CALL_STACK
	seq_printf(m, "ShadowCallStack:%8lu kB\n",
		   global_node_page_state(NR_KERNEL_SCS_KB));
#endif
	show_val_kb(m, "PageTables:     ",
		    global_node_page_state(NR_PAGETABLE));
	show_val_kb(m, "SecPageTables:  ",
		    global_node_page_state(NR_SECONDARY_PAGETABLE));

	show_val_kb(m, "NFS_Unstable:   ", 0);
	show_val_kb(m, "Bounce:         ",
		    global_zone_page_state(NR_BOUNCE));
	show_val_kb(m, "WritebackTmp:   ",
		    global_node_page_state(NR_WRITEBACK_TEMP));
	show_val_kb(m, "CommitLimit:    ", vm_commit_limit());
	show_val_kb(m, "Committed_AS:   ", committed);
	seq_printf(m, "VmallocTotal:   %8lu kB\n",
		   (unsigned long)VMALLOC_TOTAL >> 10);
	show_val_kb(m, "VmallocUsed:    ", vmalloc_nr_pages());
	show_val_kb(m, "VmallocChunk:   ", 0ul);
	show_val_kb(m, "Percpu:         ", pcpu_nr_pages());

	memtest_report_meminfo(m);

#ifdef CONFIG_MEMORY_FAILURE
	seq_printf(m, "HardwareCorrupted: %5lu kB\n",
		   atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10));
#endif

#ifdef CONFIG_TRANSPARENT_HUGEPAGE
	show_val_kb(m, "AnonHugePages:  ",
		    global_node_page_state(NR_ANON_THPS));
	show_val_kb(m, "ShmemHugePages: ",
		    global_node_page_state(NR_SHMEM_THPS));
	show_val_kb(m, "ShmemPmdMapped: ",
		    global_node_page_state(NR_SHMEM_PMDMAPPED));
	show_val_kb(m, "FileHugePages:  ",
		    global_node_page_state(NR_FILE_THPS));
	show_val_kb(m, "FilePmdMapped:  ",
		    global_node_page_state(NR_FILE_PMDMAPPED));
#endif

#ifdef CONFIG_CMA
	show_val_kb(m, "CmaTotal:       ", totalcma_pages);
	show_val_kb(m, "CmaFree:        ",
		    global_zone_page_state(NR_FREE_CMA_PAGES));
#endif

#ifdef CONFIG_UNACCEPTED_MEMORY
	show_val_kb(m, "Unaccepted:     ",
		    global_zone_page_state(NR_UNACCEPTED));
#endif

	hugetlb_report_meminfo(m);

	arch_report_meminfo(m);

	return 0;
}

static int __init proc_meminfo_init(void)
{
	struct proc_dir_entry *pde;

	pde = proc_create_single("meminfo", 0, NULL, meminfo_proc_show);
	pde_make_permanent(pde);
	return 0;
}
fs_initcall(proc_meminfo_init);