cregit-Linux how code gets into the kernel

Release 4.15 mm/debug.c

Directory: mm
// SPDX-License-Identifier: GPL-2.0
/*
 * mm/debug.c
 *
 * mm/ specific debug routines.
 *
 */

#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/trace_events.h>
#include <linux/memcontrol.h>
#include <trace/events/mmflags.h>
#include <linux/migrate.h>
#include <linux/page_owner.h>

#include "internal.h"


char *migrate_reason_names[MR_TYPES] = {
	"compaction",
	"memory_failure",
	"memory_hotplug",
	"syscall_or_cpuset",
	"mempolicy_mbind",
	"numa_misplaced",
	"cma",
};


const struct trace_print_flags pageflag_names[] = {
	__def_pageflag_names,
	{0, NULL}
};


const struct trace_print_flags gfpflag_names[] = {
	__def_gfpflag_names,
	{0, NULL}
};


const struct trace_print_flags vmaflag_names[] = {
	__def_vmaflag_names,
	{0, NULL}
};


void __dump_page(struct page *page, const char *reason) { /* * Avoid VM_BUG_ON() in page_mapcount(). * page->_mapcount space in struct page is used by sl[aou]b pages to * encode own info. */ int mapcount = PageSlab(page) ? 0 : page_mapcount(page); pr_emerg("page:%px count:%d mapcount:%d mapping:%px index:%#lx", page, page_ref_count(page), mapcount, page->mapping, page_to_pgoff(page)); if (PageCompound(page)) pr_cont(" compound_mapcount: %d", compound_mapcount(page)); pr_cont("\n"); BUILD_BUG_ON(ARRAY_SIZE(pageflag_names) != __NR_PAGEFLAGS + 1); pr_emerg("flags: %#lx(%pGp)\n", page->flags, &page->flags); print_hex_dump(KERN_ALERT, "raw: ", DUMP_PREFIX_NONE, 32, sizeof(unsigned long), page, sizeof(struct page), false); if (reason) pr_alert("page dumped because: %s\n", reason); #ifdef CONFIG_MEMCG if (page->mem_cgroup) pr_alert("page->mem_cgroup:%px\n", page->mem_cgroup); #endif }

Contributors

PersonTokensPropCommitsCommitProp
Sasha Levin6238.75%18.33%
Kirill A. Shutemov4226.25%325.00%
Vlastimil Babka3723.12%433.33%
Johannes Weiner159.38%18.33%
Matthew Wilcox21.25%18.33%
Andrew Morton10.62%18.33%
JoonSoo Kim10.62%18.33%
Total160100.00%12100.00%


void dump_page(struct page *page, const char *reason) { __dump_page(page, reason); dump_page_owner(page); }

Contributors

PersonTokensPropCommitsCommitProp
Sasha Levin2177.78%133.33%
Vlastimil Babka622.22%266.67%
Total27100.00%3100.00%

EXPORT_SYMBOL(dump_page); #ifdef CONFIG_DEBUG_VM
void dump_vma(const struct vm_area_struct *vma) { pr_emerg("vma %px start %px end %px\n" "next %px prev %px mm %px\n" "prot %lx anon_vma %px vm_ops %px\n" "pgoff %lx file %px private_data %px\n" "flags: %#lx(%pGv)\n", vma, (void *)vma->vm_start, (void *)vma->vm_end, vma->vm_next, vma->vm_prev, vma->vm_mm, (unsigned long)pgprot_val(vma->vm_page_prot), vma->anon_vma, vma->vm_ops, vma->vm_pgoff, vma->vm_file, vma->vm_private_data, vma->vm_flags, &vma->vm_flags); }

Contributors

PersonTokensPropCommitsCommitProp
Sasha Levin7987.78%125.00%
Vlastimil Babka66.67%125.00%
Matthew Wilcox44.44%125.00%
Andrew Morton11.11%125.00%
Total90100.00%4100.00%

EXPORT_SYMBOL(dump_vma);
void dump_mm(const struct mm_struct *mm) { pr_emerg("mm %px mmap %px seqnum %d task_size %lu\n" #ifdef CONFIG_MMU "get_unmapped_area %px\n" #endif "mmap_base %lu mmap_legacy_base %lu highest_vm_end %lu\n" "pgd %px mm_users %d mm_count %d pgtables_bytes %lu map_count %d\n" "hiwater_rss %lx hiwater_vm %lx total_vm %lx locked_vm %lx\n" "pinned_vm %lx data_vm %lx exec_vm %lx stack_vm %lx\n" "start_code %lx end_code %lx start_data %lx end_data %lx\n" "start_brk %lx brk %lx start_stack %lx\n" "arg_start %lx arg_end %lx env_start %lx env_end %lx\n" "binfmt %px flags %lx core_state %px\n" #ifdef CONFIG_AIO "ioctx_table %px\n" #endif #ifdef CONFIG_MEMCG "owner %px " #endif "exe_file %px\n" #ifdef CONFIG_MMU_NOTIFIER "mmu_notifier_mm %px\n" #endif #ifdef CONFIG_NUMA_BALANCING "numa_next_scan %lu numa_scan_offset %lu numa_scan_seq %d\n" #endif "tlb_flush_pending %d\n" "def_flags: %#lx(%pGv)\n", mm, mm->mmap, mm->vmacache_seqnum, mm->task_size, #ifdef CONFIG_MMU mm->get_unmapped_area, #endif mm->mmap_base, mm->mmap_legacy_base, mm->highest_vm_end, mm->pgd, atomic_read(&mm->mm_users), atomic_read(&mm->mm_count), mm_pgtables_bytes(mm), mm->map_count, mm->hiwater_rss, mm->hiwater_vm, mm->total_vm, mm->locked_vm, mm->pinned_vm, mm->data_vm, mm->exec_vm, mm->stack_vm, mm->start_code, mm->end_code, mm->start_data, mm->end_data, mm->start_brk, mm->brk, mm->start_stack, mm->arg_start, mm->arg_end, mm->env_start, mm->env_end, mm->binfmt, mm->flags, mm->core_state, #ifdef CONFIG_AIO mm->ioctx_table, #endif #ifdef CONFIG_MEMCG mm->owner, #endif mm->exe_file, #ifdef CONFIG_MMU_NOTIFIER mm->mmu_notifier_mm, #endif #ifdef CONFIG_NUMA_BALANCING mm->numa_next_scan, mm->numa_scan_offset, mm->numa_scan_seq, #endif atomic_read(&mm->tlb_flush_pending), mm->def_flags, &mm->def_flags ); }

Contributors

PersonTokensPropCommitsCommitProp
Sasha Levin24990.88%111.11%
Matthew Wilcox82.92%111.11%
Kirill A. Shutemov51.82%333.33%
Vlastimil Babka51.82%111.11%
Nadav Amit41.46%111.11%
Konstantin Khlebnikov20.73%111.11%
Andrew Morton10.36%111.11%
Total274100.00%9100.00%

#endif /* CONFIG_DEBUG_VM */

Overall Contributors

PersonTokensPropCommitsCommitProp
Sasha Levin44967.62%28.33%
Vlastimil Babka12618.98%729.17%
Kirill A. Shutemov477.08%625.00%
Johannes Weiner152.26%14.17%
Matthew Wilcox142.11%14.17%
Nadav Amit40.60%14.17%
Andrew Morton30.45%14.17%
Konstantin Khlebnikov20.30%14.17%
Vladimir Davydov10.15%14.17%
JoonSoo Kim10.15%14.17%
Steven Rostedt10.15%14.17%
Greg Kroah-Hartman10.15%14.17%
Total664100.00%24100.00%
Directory: mm
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.