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proc: switch /proc/meminfo to seq_file
and move it to fs/proc/meminfo.c while I'm at it. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
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Alexey Dobriyan
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Oct 23, 2008
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,168 @@ | ||
| #include <linux/fs.h> | ||
| #include <linux/hugetlb.h> | ||
| #include <linux/init.h> | ||
| #include <linux/kernel.h> | ||
| #include <linux/mm.h> | ||
| #include <linux/mman.h> | ||
| #include <linux/mmzone.h> | ||
| #include <linux/proc_fs.h> | ||
| #include <linux/quicklist.h> | ||
| #include <linux/seq_file.h> | ||
| #include <linux/swap.h> | ||
| #include <linux/vmstat.h> | ||
| #include <asm/atomic.h> | ||
| #include <asm/page.h> | ||
| #include <asm/pgtable.h> | ||
| #include "internal.h" | ||
|
|
||
| void __attribute__((weak)) arch_report_meminfo(struct seq_file *m) | ||
| { | ||
| } | ||
|
|
||
| static int meminfo_proc_show(struct seq_file *m, void *v) | ||
| { | ||
| struct sysinfo i; | ||
| unsigned long committed; | ||
| unsigned long allowed; | ||
| struct vmalloc_info vmi; | ||
| long cached; | ||
| unsigned long pages[NR_LRU_LISTS]; | ||
| int lru; | ||
|
|
||
| /* | ||
| * display in kilobytes. | ||
| */ | ||
| #define K(x) ((x) << (PAGE_SHIFT - 10)) | ||
| si_meminfo(&i); | ||
| si_swapinfo(&i); | ||
| committed = atomic_long_read(&vm_committed_space); | ||
| allowed = ((totalram_pages - hugetlb_total_pages()) | ||
| * sysctl_overcommit_ratio / 100) + total_swap_pages; | ||
|
|
||
| cached = global_page_state(NR_FILE_PAGES) - | ||
| total_swapcache_pages - i.bufferram; | ||
| if (cached < 0) | ||
| cached = 0; | ||
|
|
||
| get_vmalloc_info(&vmi); | ||
|
|
||
| for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++) | ||
| pages[lru] = global_page_state(NR_LRU_BASE + lru); | ||
|
|
||
| /* | ||
| * Tagged format, for easy grepping and expansion. | ||
| */ | ||
| seq_printf(m, | ||
| "MemTotal: %8lu kB\n" | ||
| "MemFree: %8lu kB\n" | ||
| "Buffers: %8lu kB\n" | ||
| "Cached: %8lu kB\n" | ||
| "SwapCached: %8lu kB\n" | ||
| "Active: %8lu kB\n" | ||
| "Inactive: %8lu kB\n" | ||
| "Active(anon): %8lu kB\n" | ||
| "Inactive(anon): %8lu kB\n" | ||
| "Active(file): %8lu kB\n" | ||
| "Inactive(file): %8lu kB\n" | ||
| #ifdef CONFIG_UNEVICTABLE_LRU | ||
| "Unevictable: %8lu kB\n" | ||
| "Mlocked: %8lu kB\n" | ||
| #endif | ||
| #ifdef CONFIG_HIGHMEM | ||
| "HighTotal: %8lu kB\n" | ||
| "HighFree: %8lu kB\n" | ||
| "LowTotal: %8lu kB\n" | ||
| "LowFree: %8lu kB\n" | ||
| #endif | ||
| "SwapTotal: %8lu kB\n" | ||
| "SwapFree: %8lu kB\n" | ||
| "Dirty: %8lu kB\n" | ||
| "Writeback: %8lu kB\n" | ||
| "AnonPages: %8lu kB\n" | ||
| "Mapped: %8lu kB\n" | ||
| "Slab: %8lu kB\n" | ||
| "SReclaimable: %8lu kB\n" | ||
| "SUnreclaim: %8lu kB\n" | ||
| "PageTables: %8lu kB\n" | ||
| #ifdef CONFIG_QUICKLIST | ||
| "Quicklists: %8lu kB\n" | ||
| #endif | ||
| "NFS_Unstable: %8lu kB\n" | ||
| "Bounce: %8lu kB\n" | ||
| "WritebackTmp: %8lu kB\n" | ||
| "CommitLimit: %8lu kB\n" | ||
| "Committed_AS: %8lu kB\n" | ||
| "VmallocTotal: %8lu kB\n" | ||
| "VmallocUsed: %8lu kB\n" | ||
| "VmallocChunk: %8lu kB\n", | ||
| K(i.totalram), | ||
| K(i.freeram), | ||
| K(i.bufferram), | ||
| K(cached), | ||
| K(total_swapcache_pages), | ||
| K(pages[LRU_ACTIVE_ANON] + pages[LRU_ACTIVE_FILE]), | ||
| K(pages[LRU_INACTIVE_ANON] + pages[LRU_INACTIVE_FILE]), | ||
| K(pages[LRU_ACTIVE_ANON]), | ||
| K(pages[LRU_INACTIVE_ANON]), | ||
| K(pages[LRU_ACTIVE_FILE]), | ||
| K(pages[LRU_INACTIVE_FILE]), | ||
| #ifdef CONFIG_UNEVICTABLE_LRU | ||
| K(pages[LRU_UNEVICTABLE]), | ||
| K(global_page_state(NR_MLOCK)), | ||
| #endif | ||
| #ifdef CONFIG_HIGHMEM | ||
| K(i.totalhigh), | ||
| K(i.freehigh), | ||
| K(i.totalram-i.totalhigh), | ||
| K(i.freeram-i.freehigh), | ||
| #endif | ||
| K(i.totalswap), | ||
| K(i.freeswap), | ||
| K(global_page_state(NR_FILE_DIRTY)), | ||
| K(global_page_state(NR_WRITEBACK)), | ||
| K(global_page_state(NR_ANON_PAGES)), | ||
| K(global_page_state(NR_FILE_MAPPED)), | ||
| K(global_page_state(NR_SLAB_RECLAIMABLE) + | ||
| global_page_state(NR_SLAB_UNRECLAIMABLE)), | ||
| K(global_page_state(NR_SLAB_RECLAIMABLE)), | ||
| K(global_page_state(NR_SLAB_UNRECLAIMABLE)), | ||
| K(global_page_state(NR_PAGETABLE)), | ||
| #ifdef CONFIG_QUICKLIST | ||
| K(quicklist_total_size()), | ||
| #endif | ||
| K(global_page_state(NR_UNSTABLE_NFS)), | ||
| K(global_page_state(NR_BOUNCE)), | ||
| K(global_page_state(NR_WRITEBACK_TEMP)), | ||
| K(allowed), | ||
| K(committed), | ||
| (unsigned long)VMALLOC_TOTAL >> 10, | ||
| vmi.used >> 10, | ||
| vmi.largest_chunk >> 10 | ||
| ); | ||
|
|
||
| hugetlb_report_meminfo(m); | ||
|
|
||
| arch_report_meminfo(m); | ||
|
|
||
| return 0; | ||
| #undef K | ||
| } | ||
|
|
||
| static int meminfo_proc_open(struct inode *inode, struct file *file) | ||
| { | ||
| return single_open(file, meminfo_proc_show, NULL); | ||
| } | ||
|
|
||
| static const struct file_operations meminfo_proc_fops = { | ||
| .open = meminfo_proc_open, | ||
| .read = seq_read, | ||
| .llseek = seq_lseek, | ||
| .release = single_release, | ||
| }; | ||
|
|
||
| static int __init proc_meminfo_init(void) | ||
| { | ||
| proc_create("meminfo", 0, NULL, &meminfo_proc_fops); | ||
| return 0; | ||
| } | ||
| module_init(proc_meminfo_init); |
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