ed8be7b855
When memory block is logically offlined, it is still part of System RAM but
is inactive, and can be made active or Onlined anytime.
Take totalram snapshot to include offlined memory in Memtotal.
This method avoids taking device_hotplug lock to meminfo.
Fixes: dc00b6d99a ("proc/meminfo: include offlined region for mem total")
Change-Id: I2b69444e6f066e1c1928278707616840308b00d0
Signed-off-by: Prakash Gupta <guptap@codeaurora.org>
202 lines
6.1 KiB
C
202 lines
6.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/fs.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/hugetlb.h>
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#include <linux/mman.h>
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#include <linux/mmzone.h>
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#include <linux/memory.h>
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#include <linux/proc_fs.h>
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#include <linux/percpu.h>
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#include <linux/seq_file.h>
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#include <linux/swap.h>
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#include <linux/vmstat.h>
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#include <linux/atomic.h>
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#include <linux/vmalloc.h>
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#ifdef CONFIG_CMA
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#include <linux/cma.h>
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#endif
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include "internal.h"
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#ifdef CONFIG_QCOM_MINIDUMP_PANIC_DUMP
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#include <soc/qcom/minidump.h>
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#include <linux/seq_buf.h>
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#endif
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void __attribute__((weak)) arch_report_meminfo(struct seq_file *m)
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{
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}
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static void show_val_kb2(struct seq_file *m, const char *s, unsigned long num)
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{
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if (m) {
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seq_printf(m, s, num);
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} else {
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#ifdef CONFIG_QCOM_MINIDUMP_PANIC_DUMP
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if (md_meminfo_seq_buf)
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seq_buf_printf(md_meminfo_seq_buf, s, num);
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#endif
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}
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}
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static void show_val_kb(struct seq_file *m, const char *s, unsigned long num)
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{
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if (m) {
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seq_put_decimal_ull_width(m, s, num << (PAGE_SHIFT - 10), 8);
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seq_write(m, " kB\n", 4);
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} else {
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#ifdef CONFIG_QCOM_MINIDUMP_PANIC_DUMP
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if (md_meminfo_seq_buf)
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seq_buf_printf(md_meminfo_seq_buf, "%s : %lld KB\n", s,
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num << (PAGE_SHIFT - 10));
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#endif
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}
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}
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static int meminfo_proc_show(struct seq_file *m, void *v)
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{
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struct sysinfo i;
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unsigned long committed;
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long cached;
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long available;
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unsigned long pages[NR_LRU_LISTS];
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unsigned long sreclaimable, sunreclaim;
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int lru;
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si_meminfo(&i);
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si_swapinfo(&i);
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committed = percpu_counter_read_positive(&vm_committed_as);
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cached = global_node_page_state(NR_FILE_PAGES) -
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total_swapcache_pages() - i.bufferram;
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if (cached < 0)
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cached = 0;
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for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++)
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pages[lru] = global_node_page_state(NR_LRU_BASE + lru);
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available = si_mem_available();
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#ifdef CONFIG_QCOM_MEM_OFFLINE
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i.totalram = get_totalram_pages_count_inc_offlined();
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#endif
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sreclaimable = global_node_page_state(NR_SLAB_RECLAIMABLE);
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sunreclaim = global_node_page_state(NR_SLAB_UNRECLAIMABLE);
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show_val_kb(m, "MemTotal: ", i.totalram);
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show_val_kb(m, "MemFree: ", i.freeram);
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show_val_kb(m, "MemAvailable: ", available);
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show_val_kb(m, "Buffers: ", i.bufferram);
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show_val_kb(m, "Cached: ", cached);
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show_val_kb(m, "SwapCached: ", total_swapcache_pages());
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show_val_kb(m, "Active: ", pages[LRU_ACTIVE_ANON] +
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pages[LRU_ACTIVE_FILE]);
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show_val_kb(m, "Inactive: ", pages[LRU_INACTIVE_ANON] +
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pages[LRU_INACTIVE_FILE]);
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show_val_kb(m, "Active(anon): ", pages[LRU_ACTIVE_ANON]);
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show_val_kb(m, "Inactive(anon): ", pages[LRU_INACTIVE_ANON]);
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show_val_kb(m, "Active(file): ", pages[LRU_ACTIVE_FILE]);
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show_val_kb(m, "Inactive(file): ", pages[LRU_INACTIVE_FILE]);
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show_val_kb(m, "Unevictable: ", pages[LRU_UNEVICTABLE]);
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show_val_kb(m, "Mlocked: ", global_zone_page_state(NR_MLOCK));
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#ifdef CONFIG_HIGHMEM
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show_val_kb(m, "HighTotal: ", i.totalhigh);
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show_val_kb(m, "HighFree: ", i.freehigh);
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show_val_kb(m, "LowTotal: ", i.totalram - i.totalhigh);
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show_val_kb(m, "LowFree: ", i.freeram - i.freehigh);
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#endif
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#ifndef CONFIG_MMU
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show_val_kb(m, "MmapCopy: ",
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(unsigned long)atomic_long_read(&mmap_pages_allocated));
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#endif
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show_val_kb(m, "SwapTotal: ", i.totalswap);
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show_val_kb(m, "SwapFree: ", i.freeswap);
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show_val_kb(m, "Dirty: ",
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global_node_page_state(NR_FILE_DIRTY));
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show_val_kb(m, "Writeback: ",
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global_node_page_state(NR_WRITEBACK));
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show_val_kb(m, "AnonPages: ",
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global_node_page_state(NR_ANON_MAPPED));
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show_val_kb(m, "Mapped: ",
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global_node_page_state(NR_FILE_MAPPED));
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show_val_kb(m, "Shmem: ", i.sharedram);
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show_val_kb(m, "KReclaimable: ", sreclaimable +
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global_node_page_state(NR_KERNEL_MISC_RECLAIMABLE));
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show_val_kb(m, "Slab: ", sreclaimable + sunreclaim);
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show_val_kb(m, "SReclaimable: ", sreclaimable);
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show_val_kb(m, "SUnreclaim: ", sunreclaim);
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show_val_kb2(m, "KernelStack: %8lu kB\n",
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global_zone_page_state(NR_KERNEL_STACK_KB));
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#ifdef CONFIG_SHADOW_CALL_STACK
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show_val_kb2(m, "ShadowCallStack:%8lu kB\n",
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global_zone_page_state(NR_KERNEL_SCS_BYTES) / 1024);
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#endif
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show_val_kb(m, "PageTables: ",
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global_zone_page_state(NR_PAGETABLE));
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show_val_kb(m, "NFS_Unstable: ",
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global_node_page_state(NR_UNSTABLE_NFS));
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show_val_kb(m, "Bounce: ",
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global_zone_page_state(NR_BOUNCE));
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show_val_kb(m, "WritebackTmp: ",
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global_node_page_state(NR_WRITEBACK_TEMP));
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show_val_kb(m, "CommitLimit: ", vm_commit_limit());
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show_val_kb(m, "Committed_AS: ", committed);
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show_val_kb2(m, "VmallocTotal: %8lu kB\n",
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(unsigned long)VMALLOC_TOTAL >> 10);
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show_val_kb(m, "VmallocUsed: ", vmalloc_nr_pages());
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show_val_kb(m, "VmallocChunk: ", 0ul);
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show_val_kb(m, "Percpu: ", pcpu_nr_pages());
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#ifdef CONFIG_MEMORY_FAILURE
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show_val_kb2(m, "HardwareCorrupted: %5lu kB\n",
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atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10));
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#endif
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#ifdef CONFIG_TRANSPARENT_HUGEPAGE
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show_val_kb(m, "AnonHugePages: ",
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global_node_page_state(NR_ANON_THPS) * HPAGE_PMD_NR);
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show_val_kb(m, "ShmemHugePages: ",
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global_node_page_state(NR_SHMEM_THPS) * HPAGE_PMD_NR);
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show_val_kb(m, "ShmemPmdMapped: ",
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global_node_page_state(NR_SHMEM_PMDMAPPED) * HPAGE_PMD_NR);
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show_val_kb(m, "FileHugePages: ",
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global_node_page_state(NR_FILE_THPS) * HPAGE_PMD_NR);
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show_val_kb(m, "FilePmdMapped: ",
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global_node_page_state(NR_FILE_PMDMAPPED) * HPAGE_PMD_NR);
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#endif
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#ifdef CONFIG_CMA
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show_val_kb(m, "CmaTotal: ", totalcma_pages);
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show_val_kb(m, "CmaFree: ",
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global_zone_page_state(NR_FREE_CMA_PAGES));
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#endif
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if (m) {
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hugetlb_report_meminfo(m);
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arch_report_meminfo(m);
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}
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return 0;
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}
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#ifdef CONFIG_QCOM_MINIDUMP_PANIC_DUMP
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void md_dump_meminfo(void)
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{
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meminfo_proc_show(NULL, NULL);
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}
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#endif
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static int __init proc_meminfo_init(void)
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{
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proc_create_single("meminfo", 0, NULL, meminfo_proc_show);
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return 0;
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}
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fs_initcall(proc_meminfo_init);
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