cregit-Linux how code gets into the kernel

Release 4.10 fs/proc/task_mmu.c

Directory: fs/proc
#include <linux/mm.h>
#include <linux/vmacache.h>
#include <linux/hugetlb.h>
#include <linux/huge_mm.h>
#include <linux/mount.h>
#include <linux/seq_file.h>
#include <linux/highmem.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/pagemap.h>
#include <linux/mempolicy.h>
#include <linux/rmap.h>
#include <linux/swap.h>
#include <linux/swapops.h>
#include <linux/mmu_notifier.h>
#include <linux/page_idle.h>
#include <linux/shmem_fs.h>

#include <asm/elf.h>
#include <linux/uaccess.h>
#include <asm/tlbflush.h>
#include "internal.h"


void task_mem(struct seq_file *m, struct mm_struct *mm) { unsigned long text, lib, swap, ptes, pmds, anon, file, shmem; unsigned long hiwater_vm, total_vm, hiwater_rss, total_rss; anon = get_mm_counter(mm, MM_ANONPAGES); file = get_mm_counter(mm, MM_FILEPAGES); shmem = get_mm_counter(mm, MM_SHMEMPAGES); /* * Note: to minimize their overhead, mm maintains hiwater_vm and * hiwater_rss only when about to *lower* total_vm or rss. Any * collector of these hiwater stats must therefore get total_vm * and rss too, which will usually be the higher. Barriers? not * worth the effort, such snapshots can always be inconsistent. */ hiwater_vm = total_vm = mm->total_vm; if (hiwater_vm < mm->hiwater_vm) hiwater_vm = mm->hiwater_vm; hiwater_rss = total_rss = anon + file + shmem; if (hiwater_rss < mm->hiwater_rss) hiwater_rss = mm->hiwater_rss; text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK)) >> 10; lib = (mm->exec_vm << (PAGE_SHIFT-10)) - text; swap = get_mm_counter(mm, MM_SWAPENTS); ptes = PTRS_PER_PTE * sizeof(pte_t) * atomic_long_read(&mm->nr_ptes); pmds = PTRS_PER_PMD * sizeof(pmd_t) * mm_nr_pmds(mm); seq_printf(m, "VmPeak:\t%8lu kB\n" "VmSize:\t%8lu kB\n" "VmLck:\t%8lu kB\n" "VmPin:\t%8lu kB\n" "VmHWM:\t%8lu kB\n" "VmRSS:\t%8lu kB\n" "RssAnon:\t%8lu kB\n" "RssFile:\t%8lu kB\n" "RssShmem:\t%8lu kB\n" "VmData:\t%8lu kB\n" "VmStk:\t%8lu kB\n" "VmExe:\t%8lu kB\n" "VmLib:\t%8lu kB\n" "VmPTE:\t%8lu kB\n" "VmPMD:\t%8lu kB\n" "VmSwap:\t%8lu kB\n", hiwater_vm << (PAGE_SHIFT-10), total_vm << (PAGE_SHIFT-10), mm->locked_vm << (PAGE_SHIFT-10), mm->pinned_vm << (PAGE_SHIFT-10), hiwater_rss << (PAGE_SHIFT-10), total_rss << (PAGE_SHIFT-10), anon << (PAGE_SHIFT-10), file << (PAGE_SHIFT-10), shmem << (PAGE_SHIFT-10), mm->data_vm << (PAGE_SHIFT-10), mm->stack_vm << (PAGE_SHIFT-10), text, lib, ptes >> 10, pmds >> 10, swap << (PAGE_SHIFT-10)); hugetlb_report_usage(m, mm); }

Contributors

PersonTokensPropCommitsCommitProp
hugh dickinshugh dickins7120.94%18.33%
christoph hellwigchristoph hellwig6619.47%18.33%
jerome marchandjerome marchand6519.17%18.33%
william lee irwin iiiwilliam lee irwin iii4713.86%325.00%
kirill a. shutemovkirill a. shutemov4112.09%18.33%
kamezawa hiroyukikamezawa hiroyuki205.90%18.33%
christoph lameterchristoph lameter113.24%18.33%
eric w. biedermaneric w. biederman82.36%18.33%
naoya horiguchinaoya horiguchi72.06%18.33%
konstantin khlebnikovkonstantin khlebnikov30.88%18.33%
Total339100.00%12100.00%


unsigned long task_vsize(struct mm_struct *mm) { return PAGE_SIZE * mm->total_vm; }

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PersonTokensPropCommitsCommitProp
christoph hellwigchristoph hellwig1477.78%150.00%
andrew mortonandrew morton422.22%150.00%
Total18100.00%2100.00%


unsigned long task_statm(struct mm_struct *mm, unsigned long *shared, unsigned long *text, unsigned long *data, unsigned long *resident) { *shared = get_mm_counter(mm, MM_FILEPAGES) + get_mm_counter(mm, MM_SHMEMPAGES); *text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK)) >> PAGE_SHIFT; *data = mm->data_vm + mm->stack_vm; *resident = *shared + get_mm_counter(mm, MM_ANONPAGES); return mm->total_vm; }

Contributors

PersonTokensPropCommitsCommitProp
christoph hellwigchristoph hellwig3939.39%110.00%
william lee irwin iiiwilliam lee irwin iii2525.25%220.00%
alexey dobriyanalexey dobriyan1010.10%110.00%
hugh dickinshugh dickins99.09%220.00%
jerome marchandjerome marchand77.07%110.00%
christoph lameterchristoph lameter44.04%110.00%
konstantin khlebnikovkonstantin khlebnikov33.03%110.00%
kamezawa hiroyukikamezawa hiroyuki22.02%110.00%
Total99100.00%10100.00%

#ifdef CONFIG_NUMA /* * Save get_task_policy() for show_numa_map(). */
static void hold_task_mempolicy(struct proc_maps_private *priv) { struct task_struct *task = priv->task; task_lock(task); priv->task_mempolicy = get_task_policy(task); mpol_get(priv->task_mempolicy); task_unlock(task); }

Contributors

PersonTokensPropCommitsCommitProp
kamezawa hiroyukikamezawa hiroyuki4393.48%150.00%
oleg nesterovoleg nesterov36.52%150.00%
Total46100.00%2100.00%


static void release_task_mempolicy(struct proc_maps_private *priv) { mpol_put(priv->task_mempolicy); }

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PersonTokensPropCommitsCommitProp
kamezawa hiroyukikamezawa hiroyuki18100.00%1100.00%
Total18100.00%1100.00%

#else
static void hold_task_mempolicy(struct proc_maps_private *priv) { }

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PersonTokensPropCommitsCommitProp
kamezawa hiroyukikamezawa hiroyuki10100.00%1100.00%
Total10100.00%1100.00%


static void release_task_mempolicy(struct proc_maps_private *priv) { }

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PersonTokensPropCommitsCommitProp
kamezawa hiroyukikamezawa hiroyuki10100.00%1100.00%
Total10100.00%1100.00%

#endif
static void vma_stop(struct proc_maps_private *priv) { struct mm_struct *mm = priv->mm; release_task_mempolicy(priv); up_read(&mm->mmap_sem); mmput(mm); }

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PersonTokensPropCommitsCommitProp
matt mackallmatt mackall3078.95%240.00%
kamezawa hiroyukikamezawa hiroyuki513.16%120.00%
oleg nesterovoleg nesterov25.26%120.00%
mauricio linmauricio lin12.63%120.00%
Total38100.00%5100.00%


static struct vm_area_struct * m_next_vma(struct proc_maps_private *priv, struct vm_area_struct *vma) { if (vma == priv->tail_vma) return NULL; return vma->vm_next ?: priv->tail_vma; }

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PersonTokensPropCommitsCommitProp
oleg nesterovoleg nesterov39100.00%1100.00%
Total39100.00%1100.00%


static void m_cache_vma(struct seq_file *m, struct vm_area_struct *vma) { if (m->count < m->size) /* vma is copied successfully */ m->version = m_next_vma(m->private, vma) ? vma->vm_end : -1UL; }

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PersonTokensPropCommitsCommitProp
oleg nesterovoleg nesterov4697.87%150.00%
robert horobert ho12.13%150.00%
Total47100.00%2100.00%


static void *m_start(struct seq_file *m, loff_t *ppos) { struct proc_maps_private *priv = m->private; unsigned long last_addr = m->version; struct mm_struct *mm; struct vm_area_struct *vma; unsigned int pos = *ppos; /* See m_cache_vma(). Zero at the start or after lseek. */ if (last_addr == -1UL) return NULL; priv->task = get_proc_task(priv->inode); if (!priv->task) return ERR_PTR(-ESRCH); mm = priv->mm; if (!mm || !atomic_inc_not_zero(&mm->mm_users)) return NULL; down_read(&mm->mmap_sem); hold_task_mempolicy(priv); priv->tail_vma = get_gate_vma(mm); if (last_addr) { vma = find_vma(mm, last_addr - 1); if (vma && vma->vm_start <= last_addr) vma = m_next_vma(priv, vma); if (vma) return vma; } m->version = 0; if (pos < mm->map_count) { for (vma = mm->mmap; pos; pos--) { m->version = vma->vm_start; vma = vma->vm_next; } return vma; } /* we do not bother to update m->version in this case */ if (pos == mm->map_count && priv->tail_vma) return priv->tail_vma; vma_stop(priv); return NULL; }

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PersonTokensPropCommitsCommitProp
oleg nesterovoleg nesterov11947.98%738.89%
matt mackallmatt mackall4919.76%15.56%
al viroal viro197.66%211.11%
christoph hellwigchristoph hellwig187.26%15.56%
ingo molnaringo molnar176.85%211.11%
robert horobert ho124.84%15.56%
prasanna medaprasanna meda72.82%15.56%
kamezawa hiroyukikamezawa hiroyuki31.21%15.56%
eric w. biedermaneric w. biederman20.81%15.56%
mauricio linmauricio lin20.81%15.56%
Total248100.00%18100.00%


static void *m_next(struct seq_file *m, void *v, loff_t *pos) { struct proc_maps_private *priv = m->private; struct vm_area_struct *next; (*pos)++; next = m_next_vma(priv, v); if (!next) vma_stop(priv); return next; }

Contributors

PersonTokensPropCommitsCommitProp
matt mackallmatt mackall2641.94%228.57%
oleg nesterovoleg nesterov2337.10%228.57%
david rientjesdavid rientjes711.29%114.29%
mauricio linmauricio lin46.45%114.29%
christoph hellwigchristoph hellwig23.23%114.29%
Total62100.00%7100.00%


static void m_stop(struct seq_file *m, void *v) { struct proc_maps_private *priv = m->private; if (!IS_ERR_OR_NULL(v)) vma_stop(priv); if (priv->task) { put_task_struct(priv->task); priv->task = NULL; } }

Contributors

PersonTokensPropCommitsCommitProp
matt mackallmatt mackall3560.34%116.67%
oleg nesterovoleg nesterov1017.24%233.33%
linus torvaldslinus torvalds610.34%116.67%
mauricio linmauricio lin46.90%116.67%
prasanna medaprasanna meda35.17%116.67%
Total58100.00%6100.00%


static int proc_maps_open(struct inode *inode, struct file *file, const struct seq_operations *ops, int psize) { struct proc_maps_private *priv = __seq_open_private(file, ops, psize); if (!priv) return -ENOMEM; priv->inode = inode; priv->mm = proc_mem_open(inode, PTRACE_MODE_READ); if (IS_ERR(priv->mm)) { int err = PTR_ERR(priv->mm); seq_release_private(inode, file); return err; } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
oleg nesterovoleg nesterov6262.63%333.33%
matt mackallmatt mackall3030.30%111.11%
christoph hellwigchristoph hellwig33.03%111.11%
jan engelhardtjan engelhardt11.01%111.11%
prasanna medaprasanna meda11.01%111.11%
david rientjesdavid rientjes11.01%111.11%
nick pigginnick piggin11.01%111.11%
Total99100.00%9100.00%


static int proc_map_release(struct inode *inode, struct file *file) { struct seq_file *seq = file->private_data; struct proc_maps_private *priv = seq->private; if (priv->mm) mmdrop(priv->mm); return seq_release_private(inode, file); }

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oleg nesterovoleg nesterov55100.00%1100.00%
Total55100.00%1100.00%


static int do_maps_open(struct inode *inode, struct file *file, const struct seq_operations *ops) { return proc_maps_open(inode, file, ops, sizeof(struct proc_maps_private)); }

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PersonTokensPropCommitsCommitProp
oleg nesterovoleg nesterov3078.95%125.00%
mauricio linmauricio lin410.53%125.00%
matt mackallmatt mackall410.53%250.00%
Total38100.00%4100.00%

/* * Indicate if the VMA is a stack for the given task; for * /proc/PID/maps that is the stack of the main task. */
static int is_stack(struct proc_maps_private *priv, struct vm_area_struct *vma) { /* * We make no effort to guess what a given thread considers to be * its "stack". It's not even well-defined for programs written * languages like Go. */ return vma->vm_start <= vma->vm_mm->start_stack && vma->vm_end >= vma->vm_mm->start_stack; }

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PersonTokensPropCommitsCommitProp
johannes weinerjohannes weiner2155.26%133.33%
oleg nesterovoleg nesterov1539.47%133.33%
andy lutomirskiandy lutomirski25.26%133.33%
Total38100.00%3100.00%


static void show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid) { struct mm_struct *mm = vma->vm_mm; struct file *file = vma->vm_file; struct proc_maps_private *priv = m->private; vm_flags_t flags = vma->vm_flags; unsigned long ino = 0; unsigned long long pgoff = 0; unsigned long start, end; dev_t dev = 0; const char *name = NULL; if (file) { struct inode *inode = file_inode(vma->vm_file); dev = inode->i_sb->s_dev; ino = inode->i_ino; pgoff = ((loff_t)vma->vm_pgoff) << PAGE_SHIFT; } /* We don't show the stack guard page in /proc/maps */ start = vma->vm_start; if (stack_guard_page_start(vma, start)) start += PAGE_SIZE; end = vma->vm_end; if (stack_guard_page_end(vma, end)) end -= PAGE_SIZE; seq_setwidth(m, 25 + sizeof(void *) * 6 - 1); seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu ", start, end, flags & VM_READ ? 'r' : '-', flags & VM_WRITE ? 'w' : '-', flags & VM_EXEC ? 'x' : '-', flags & VM_MAYSHARE ? 's' : 'p', pgoff, MAJOR(dev), MINOR(dev), ino); /* * Print the dentry name for named mappings, and a * special [heap] marker for the heap: */ if (file) { seq_pad(m, ' '); seq_file_path(m, file, "\n"); goto done; } if (vma->vm_ops && vma->vm_ops->name) { name = vma->vm_ops->name(vma); if (name) goto done; } name = arch_vma_name(vma); if (!name) { if (!mm) { name = "[vdso]"; goto done; } if (vma->vm_start <= mm->brk && vma->vm_end >= mm->start_brk) { name = "[heap]"; goto done; } if (is_stack(priv, vma)) name = "[stack]"; } done: if (name) { seq_pad(m, ' '); seq_puts(m, name); } seq_putc(m, '\n'); }

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PersonTokensPropCommitsCommitProp
matt mackallmatt mackall18045.34%420.00%
siddhesh poyarekarsiddhesh poyarekar4210.58%15.00%
andy lutomirskiandy lutomirski328.06%15.00%
david rientjesdavid rientjes235.79%15.00%
tetsuo handatetsuo handa225.54%15.00%
mikulas patockamikulas patocka225.54%15.00%
kamezawa hiroyukikamezawa hiroyuki215.29%15.00%
linus torvaldslinus torvalds184.53%15.00%
mauricio linmauricio lin143.53%15.00%
stefan baderstefan bader71.76%15.00%
joe kortyjoe korty51.26%15.00%
johannes weinerjohannes weiner30.76%15.00%
al viroal viro30.76%15.00%
aaro koskinenaaro koskinen20.50%15.00%
kosaki motohirokosaki motohiro10.25%15.00%
miklos szeredimiklos szeredi10.25%15.00%
oleg nesterovoleg nesterov10.25%15.00%
Total397100.00%20100.00%


static int show_map(struct seq_file *m, void *v, int is_pid) { show_map_vma(m, v, is_pid); m_cache_vma(m, v); return 0; }

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PersonTokensPropCommitsCommitProp
joe kortyjoe korty2054.05%116.67%
oleg nesterovoleg nesterov821.62%233.33%
siddhesh poyarekarsiddhesh poyarekar513.51%116.67%
matt mackallmatt mackall410.81%233.33%
Total37100.00%6100.00%


static int show_pid_map(struct seq_file *m, void *v) { return show_map(m, v, 1); }

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siddhesh poyarekarsiddhesh poyarekar25100.00%1100.00%
Total25100.00%1100.00%


static int show_tid_map(struct seq_file *m, void *v) { return show_map(m, v, 0); }

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PersonTokensPropCommitsCommitProp
siddhesh poyarekarsiddhesh poyarekar25100.00%1100.00%
Total25100.00%1100.00%

static const struct seq_operations proc_pid_maps_op = { .start = m_start, .next = m_next, .stop = m_stop, .show = show_pid_map }; static const struct seq_operations proc_tid_maps_op = { .start = m_start, .next = m_next, .stop = m_stop, .show = show_tid_map };
static int pid_maps_open(struct inode *inode, struct file *file) { return do_maps_open(inode, file, &proc_pid_maps_op); }

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PersonTokensPropCommitsCommitProp
matt mackallmatt mackall2592.59%250.00%
siddhesh poyarekarsiddhesh poyarekar13.70%125.00%
david rientjesdavid rientjes13.70%125.00%
Total27100.00%4100.00%


static int tid_maps_open(struct inode *inode, struct file *file) { return do_maps_open(inode, file, &proc_tid_maps_op); }

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siddhesh poyarekarsiddhesh poyarekar27100.00%1100.00%
Total27100.00%1100.00%

const struct file_operations proc_pid_maps_operations = { .open = pid_maps_open, .read = seq_read, .llseek = seq_lseek, .release = proc_map_release, }; const struct file_operations proc_tid_maps_operations = { .open = tid_maps_open, .read = seq_read, .llseek = seq_lseek, .release = proc_map_release, }; /* * Proportional Set Size(PSS): my share of RSS. * * PSS of a process is the count of pages it has in memory, where each * page is divided by the number of processes sharing it. So if a * process has 1000 pages all to itself, and 1000 shared with one other * process, its PSS will be 1500. * * To keep (accumulated) division errors low, we adopt a 64bit * fixed-point pss counter to minimize division errors. So (pss >> * PSS_SHIFT) would be the real byte count. * * A shift of 12 before division means (assuming 4K page size): * - 1M 3-user-pages add up to 8KB errors; * - supports mapcount up to 2^24, or 16M; * - supports PSS up to 2^52 bytes, or 4PB. */ #define PSS_SHIFT 12 #ifdef CONFIG_PROC_PAGE_MONITOR struct mem_size_stats { unsigned long resident; unsigned long shared_clean; unsigned long shared_dirty; unsigned long private_clean; unsigned long private_dirty; unsigned long referenced; unsigned long anonymous; unsigned long anonymous_thp; unsigned long shmem_thp; unsigned long swap; unsigned long shared_hugetlb; unsigned long private_hugetlb; u64 pss; u64 swap_pss; bool check_shmem_swap; };
static void smaps_account(struct mem_size_stats *mss, struct page *page, bool compound, bool young, bool dirty) { int i, nr = compound ? 1 << compound_order(page) : 1; unsigned long size = nr * PAGE_SIZE; if (PageAnon(page)) mss->anonymous += size; mss->resident += size; /* Accumulate the size in pages that have been accessed. */ if (young || page_is_young(page) || PageReferenced(page)) mss->referenced += size; /* * page_count(page) == 1 guarantees the page is mapped exactly once. * If any subpage of the compound page mapped with PTE it would elevate * page_count(). */ if (page_count(page) == 1) { if (dirty || PageDirty(page)) mss->private_dirty += size; else mss->private_clean += size; mss->pss += (u64)size << PSS_SHIFT; return; } for (i = 0; i < nr; i++, page++) { int mapcount = page_mapcount(page); if (mapcount >= 2) { if (dirty || PageDirty(page)) mss->shared_dirty += PAGE_SIZE; else mss->shared_clean += PAGE_SIZE; mss->pss += (PAGE_SIZE << PSS_SHIFT) / mapcount; } else { if (dirty || PageDirty(page)) mss->private_dirty += PAGE_SIZE; else mss->private_clean += PAGE_SIZE; mss->pss += PAGE_SIZE << PSS_SHIFT; } } }

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PersonTokensPropCommitsCommitProp
kirill a. shutemovkirill a. shutemov23197.88%375.00%
vladimir davydovvladimir davydov52.12%125.00%
Total236100.00%4100.00%

#ifdef CONFIG_SHMEM
static int smaps_pte_hole(unsigned long addr, unsigned long end, struct mm_walk *walk) { struct mem_size_stats *mss = walk->private; mss->swap += shmem_partial_swap_usage( walk->vma->vm_file->f_mapping, addr, end); return 0; }

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vlastimil babkavlastimil babka50100.00%2100.00%
Total50100.00%2100.00%

#endif
static void smaps_pte_entry(pte_t *pte, unsigned long addr, struct mm_walk *walk) { struct mem_size_stats *mss = walk->private; struct vm_area_struct *vma = walk->vma; struct page *page = NULL; if (pte_present(*pte)) { page = vm_normal_page(vma, addr, *pte); } else if (is_swap_pte(*pte)) { swp_entry_t swpent = pte_to_swp_entry(*pte); if (!non_swap_entry(swpent)) { int mapcount; mss->swap += PAGE_SIZE; mapcount = swp_swapcount(swpent); if (mapcount >= 2) { u64 pss_delta = (u64)PAGE_SIZE << PSS_SHIFT; do_div(pss_delta, mapcount); mss->swap_pss += pss_delta; } else { mss->swap_pss += (u64)PAGE_SIZE << PSS_SHIFT; } } else if (is_migration_entry(swpent)) page = migration_entry_to_page(swpent); } else if (unlikely(IS_ENABLED(CONFIG_SHMEM) && mss->check_shmem_swap && pte_none(*pte))) { page = find_get_entry(vma->vm_file->f_mapping, linear_page_index(vma, addr)); if (!page) return; if (radix_tree_exceptional_entry(page)) mss->swap += PAGE_SIZE; else put_page(page); return; } if (!page) return; smaps_account(mss, page, false, pte_young(*pte), pte_dirty(*pte)); }

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PersonTokensPropCommitsCommitProp
vlastimil babkavlastimil babka6624.81%213.33%
minchan kimminchan kim5821.80%213.33%
konstantin khlebnikovkonstantin khlebnikov4215.79%16.67%
kirill a. shutemovkirill a. shutemov2810.53%320.00%
matt mackallmatt mackall238.65%16.67%
mauricio linmauricio lin197.14%16.67%
peter zijlstrapeter zijlstra124.51%16.67%
dave hansendave hansen93.38%213.33%
eric w. biedermaneric w. biederman83.01%16.67%
naoya horiguchinaoya horiguchi10.38%16.67%
Total266100.00%15100.00%

#ifdef CONFIG_TRANSPARENT_HUGEPAGE
static void smaps_pmd_entry(pmd_t *pmd, unsigned long addr, struct mm_walk *walk) { struct mem_size_stats *mss = walk->private; struct vm_area_struct *vma = walk->vma; struct page *page; /* FOLL_DUMP will return -EFAULT on huge zero page */ page = follow_trans_huge_pmd(vma, addr, pmd, FOLL_DUMP); if (IS_ERR_OR_NULL(page)) return; if (PageAnon(page)) mss->anonymous_thp += HPAGE_PMD_SIZE; else if (PageSwapBacked(page)) mss->shmem_thp += HPAGE_PMD_SIZE; else if (is_zone_device_page(page)) /* pass */; else VM_BUG_ON_PAGE(1, page); smaps_account(mss, page, true, pmd_young(*pmd), pmd_dirty(*pmd)); }

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PersonTokensPropCommitsCommitProp
kirill a. shutemovkirill a. shutemov9673.85%330.00%
matt mackallmatt mackall1511.54%110.00%
dan williamsdan williams107.69%110.00%
kosaki motohirokosaki motohiro53.85%110.00%
mauricio linmauricio lin10.77%110.00%
christoph hellwigchristoph hellwig10.77%110.00%
naoya horiguchinaoya horiguchi10.77%110.00%
eric w. biedermaneric w. biederman10.77%110.00%
Total130100.00%10100.00%

#else
static void smaps_pmd_entry(pmd_t *pmd, unsigned long addr, struct mm_walk *walk) { }

Contributors

PersonTokensPropCommitsCommitProp
kirill a. shutemovkirill a. shutemov18100.00%1100.00%
Total18100.00%1100.00%

#endif
static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, struct mm_walk *walk) { struct vm_area_struct *vma = walk->vma; pte_t *pte; spinlock_t *ptl; ptl = pmd_trans_huge_lock(pmd, vma); if (ptl) { smaps_pmd_entry(pmd, addr, walk); spin_unlock(ptl); return 0; } if (pmd_trans_unstable(pmd)) return 0; /* * The mmap_sem held all the way back in m_start() is what * keeps khugepaged out of here and from collapsing things * in here. */ pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl); for (; addr != end; pte++, addr += PAGE_SIZE) smaps_pte_entry(pte, addr, walk); pte_unmap_unlock(pte - 1, ptl); cond_resched(); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
dave hansendave hansen9972.26%220.00%
matt mackallmatt mackall128.76%110.00%
andrea arcangeliandrea arcangeli107.30%110.00%
kirill a. shutemovkirill a. shutemov85.84%330.00%
naoya horiguchinaoya horiguchi42.92%220.00%
mauricio linmauricio lin42.92%110.00%
Total137100.00%10100.00%


static void show_smap_vma_flags(struct seq_file *m, struct vm_area_struct *vma) { /* * Don't forget to update Documentation/ on changes. */ static const char mnemonics[BITS_PER_LONG][2] = { /* * In case if we meet a flag we don't know about. */ [0 ... (BITS_PER_LONG-1)] = "??", [ilog2(VM_READ)] = "rd", [ilog2(VM_WRITE)] = "wr", [ilog2(VM_EXEC)] = "ex", [ilog2(VM_SHARED)] = "sh", [ilog2(VM_MAYREAD)] = "mr", [ilog2(VM_MAYWRITE)] = "mw", [ilog2(VM_MAYEXEC)] = "me", [ilog2(VM_MAYSHARE)] = "ms", [ilog2(VM_GROWSDOWN)] = "gd", [ilog2(VM_PFNMAP)] = "pf", [ilog2(VM_DENYWRITE)] = "dw", #ifdef CONFIG_X86_INTEL_MPX [ilog2(VM_MPX)] = "mp", #endif [ilog2(VM_LOCKED)] = "lo", [ilog2(VM_IO)] = "io", [ilog2(VM_SEQ_READ)] = "sr", [ilog2(VM_RAND_READ)] = "rr", [ilog2(VM_DONTCOPY)] = "dc", [ilog2(VM_DONTEXPAND)] = "de", [ilog2(VM_ACCOUNT)] = "ac", [ilog2(VM_NORESERVE)] = "nr", [ilog2(VM_HUGETLB)] = "ht", [ilog2(VM_ARCH_1)] = "ar", [ilog2(VM_DONTDUMP)] = "dd", #ifdef CONFIG_MEM_SOFT_DIRTY [ilog2(VM_SOFTDIRTY)] = "sd", #endif [ilog2(VM_MIXEDMAP)] = "mm", [ilog2(VM_HUGEPAGE)] = "hg", [ilog2(VM_NOHUGEPAGE)] = "nh", [ilog2(VM_MERGEABLE)] = "mg", [ilog2(VM_UFFD_MISSING)]= "um", [ilog2(VM_UFFD_WP)] = "uw", #ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS /* These come out via ProtectionKey: */ [ilog2(VM_PKEY_BIT0)] = "", [ilog2(VM_PKEY_BIT1)] = "", [ilog2(VM_PKEY_BIT2)] = "", [ilog2(VM_PKEY_BIT3)] = "", #endif }; size_t i; seq_puts(m, "VmFlags: "); for (i = 0; i < BITS_PER_LONG; i++) { if (!mnemonics[i][0]) continue; if (vma->vm_flags & (1UL << i)) { seq_printf(m, "%c%c ", mnemonics[i][0], mnemonics[i][1]); } } seq_putc(m, '\n'); }

Contributors

PersonTokensPropCommitsCommitProp
cyrill gorcunovcyrill gorcunov34577.18%120.00%
dave hansendave hansen5612.53%120.00%
andrea arcangeliandrea arcangeli184.03%120.00%
naoya horiguchinaoya horiguchi143.13%120.00%
qiaowei renqiaowei ren143.13%120.00%
Total447100.00%5100.00%

#ifdef CONFIG_HUGETLB_PAGE
static int smaps_hugetlb_range(pte_t *pte, unsigned long hmask, unsigned long addr, unsigned long end, struct mm_walk *walk) { struct mem_size_stats *mss = walk->private; struct vm_area_struct *vma = walk->vma; struct page *page = NULL; if (pte_present(*pte)) { page = vm_normal_page(vma, addr, *pte); } else if (is_swap_pte(*pte)) { swp_entry_t swpent = pte_to_swp_entry(*pte); if (is_migration_entry(swpent)) page = migration_entry_to_page(swpent); } if (page) { int mapcount = page_mapcount(page); if (mapcount >= 2) mss->shared_hugetlb += huge_page_size(hstate_vma(vma)); else mss->private_hugetlb += huge_page_size(hstate_vma(vma)); } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
naoya horiguchinaoya horiguchi156100.00%1100.00%
Total156100.00%1100.00%

#endif /* HUGETLB_PAGE */
void __weak arch_show_smap(struct seq_file *m, struct vm_area_struct *vma) { }

Contributors

PersonTokensPropCommitsCommitProp
dave hansendave hansen15100.00%1100.00%
Total15100.00%1100.00%


static int show_smap(struct seq_file *m, void *v, int is_pid) { struct vm_area_struct *vma = v; struct mem_size_stats mss; struct mm_walk smaps_walk = { .pmd_entry = smaps_pte_range, #ifdef CONFIG_HUGETLB_PAGE .hugetlb_entry = smaps_hugetlb_range, #endif .mm = vma->vm_mm, .private = &mss, }; memset(&mss, 0, sizeof mss); #ifdef CONFIG_SHMEM if (vma->vm_file && shmem_mapping(vma->vm_file->f_mapping)) { /* * For shared or readonly shmem mappings we know that all * swapped out pages belong to the shmem object, and we can * obtain the swap value much more efficiently. For private * writable mappings, we might have COW pages that are * not affected by the parent swapped out pages of the shmem * object, so we have to distinguish them during the page walk. * Unless we know that the shmem object (or the part mapped by * our VMA) has no swapped out pages at all. */ unsigned long shmem_swapped = shmem_swap_usage(vma); if (!shmem_swapped || (vma->vm_flags & VM_SHARED) || !(vma->vm_flags & VM_WRITE)) { mss.swap = shmem_swapped; } else { mss.check_shmem_swap = true; smaps_walk.pte_hole = smaps_pte_hole; } } #endif /* mmap_sem is held in m_start */ walk_page_vma(vma, &smaps_walk); show_map_vma(m, vma, is_pid); seq_printf(m, "Size: %8lu kB\n" "Rss: %8lu kB\n" "Pss: %8lu kB\n" "Shared_Clean: %8lu kB\n" "Shared_Dirty: %8lu kB\n" "Private_Clean: %8lu kB\n" "Private_Dirty: %8lu kB\n" "Referenced: %8lu kB\n" "Anonymous: %8lu kB\n" "AnonHugePages: %8lu kB\n" "ShmemPmdMapped: %8lu kB\n" "Shared_Hugetlb: %8lu kB\n" "Private_Hugetlb: %7lu kB\n" "Swap: %8lu kB\n" "SwapPss: %8lu kB\n" "KernelPageSize: %8lu kB\n" "MMUPageSize: %8lu kB\n" "Locked: %8lu kB\n", (vma->vm_end - vma->vm_start) >> 10, mss.resident >> 10, (unsigned long)(mss.pss >> (10 + PSS_SHIFT)), mss.shared_clean >> 10, mss.shared_dirty >> 10, mss.private_clean >> 10, mss.private_dirty >> 10, mss.referenced >> 10, mss.anonymous >> 10, mss.anonymous_thp >> 10, mss.shmem_thp >> 10, mss.shared_hugetlb >> 10, mss.private_hugetlb >> 10, mss.swap >> 10, (unsigned long)(mss.swap_pss >> (10 + PSS_SHIFT)), vma_kernel_pagesize(vma) >> 10, vma_mmu_pagesize(vma) >> 10, (vma->vm_flags & VM_LOCKED) ? (unsigned long)(mss.pss >> (10 + PSS_SHIFT)) : 0); arch_show_smap(m, vma); show_smap_vma_flags(m, vma); m_cache_vma(m, vma); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
matt mackallmatt mackall11230.03%14.17%
vlastimil babkavlastimil babka7720.64%28.33%
dave hansendave hansen3810.19%312.50%
nikanth karthikesannikanth karthikesan349.12%28.33%
naoya horiguchinaoya horiguchi256.70%28.33%
minchan kimminchan kim174.56%14.17%
mel gormanmel gorman164.29%28.33%
oleg nesterovoleg nesterov71.88%14.17%
kirill a. shutemovkirill a. shutemov71.88%14.17%
peter zijlstrapeter zijlstra71.88%14.17%
cyrill gorcunovcyrill gorcunov71.88%14.17%
al viroal viro61.61%14.17%
mauricio linmauricio lin61.61%14.17%
siddhesh poyarekarsiddhesh poyarekar51.34%14.17%
prasanna medaprasanna meda41.07%14.17%
joe kortyjoe korty30.80%14.17%
kamezawa hiroyukikamezawa hiroyuki10.27%14.17%
christoph hellwigchristoph hellwig10.27%14.17%
Total373100.00%24100.00%


static int show_pid_smap(struct seq_file *m, void *v) { return show_smap(m, v, 1); }

Contributors

PersonTokensPropCommitsCommitProp
siddhesh poyarekarsiddhesh poyarekar25100.00%1100.00%
Total25100.00%1100.00%


static int show_tid_smap(struct seq_file *m, void *v) { return show_smap(m, v, 0); }

Contributors

PersonTokensPropCommitsCommitProp
siddhesh poyarekarsiddhesh poyarekar25100.00%1100.00%
Total25100.00%1100.00%

static const struct seq_operations proc_pid_smaps_op = { .start = m_start, .next = m_next, .stop = m_stop, .show = show_pid_smap }; static const struct seq_operations proc_tid_smaps_op = { .start = m_start, .next = m_next, .stop = m_stop, .show = show_tid_smap };
static int pid_smaps_open(struct inode *inode, struct file *file) { return do_maps_open(inode, file, &proc_pid_smaps_op); }

Contributors

PersonTokensPropCommitsCommitProp
siddhesh poyarekarsiddhesh poyarekar2696.30%150.00%
matt mackallmatt mackall13.70%150.00%
Total27100.00%2100.00%


static int tid_smaps_open(struct inode *inode, struct file *file) { return do_maps_open(inode, file, &proc_tid_smaps_op); }

Contributors

PersonTokensPropCommitsCommitProp
matt mackallmatt mackall1244.44%116.67%
al viroal viro725.93%116.67%
christoph hellwigchristoph hellwig311.11%116.67%
eric w. biedermaneric w. biederman27.41%116.67%
siddhesh poyarekarsiddhesh poyarekar27.41%116.67%
andrew mortonandrew morton13.70%116.67%
Total27100.00%6100.00%

const struct file_operations proc_pid_smaps_operations = { .open = pid_smaps_open, .read = seq_read, .llseek = seq_lseek, .release = proc_map_release, }; const struct file_operations proc_tid_smaps_operations = { .open = tid_smaps_open, .read = seq_read, .llseek = seq_lseek, .release = proc_map_release, }; enum clear_refs_types { CLEAR_REFS_ALL = 1, CLEAR_REFS_ANON, CLEAR_REFS_MAPPED, CLEAR_REFS_SOFT_DIRTY, CLEAR_REFS_MM_HIWATER_RSS, CLEAR_REFS_LAST, }; struct clear_refs_private { enum clear_refs_types type; }; #ifdef CONFIG_MEM_SOFT_DIRTY
static inline void clear_soft_dirty(struct vm_area_struct *vma, unsigned long addr, pte_t *pte) { /* * The soft-dirty tracker uses #PF-s to catch writes * to pages, so write-protect the pte as well. See the * Documentation/vm/soft-dirty.txt for full description * of how soft-dirty works. */ pte_t ptent = *pte; if (pte_present(ptent)) { ptent = ptep_modify_prot_start(vma->vm_mm, addr, pte); ptent = pte_wrprotect(ptent); ptent = pte_clear_soft_dirty(ptent); ptep_modify_prot_commit(vma->vm_mm, addr, pte, ptent); } else if (is_swap_pte(ptent)) { ptent = pte_swp_clear_soft_dirty(ptent); set_pte_at(vma->vm_mm, addr, pte, ptent); } }

Contributors

PersonTokensPropCommitsCommitProp
pavel emelianovpavel emelianov5350.00%125.00%
laurent dufourlaurent dufour2725.47%125.00%
cyrill gorcunovcyrill gorcunov2523.58%125.00%
martin schwidefskymartin schwidefsky10.94%125.00%
Total106100.00%4100.00%

#else
static inline void clear_soft_dirty(struct vm_area_struct *vma, unsigned long addr, pte_t *pte) { }

Contributors

PersonTokensPropCommitsCommitProp
laurent dufourlaurent dufour19100.00%1100.00%
Total19100.00%1100.00%

#endif #if defined(CONFIG_MEM_SOFT_DIRTY) && defined(CONFIG_TRANSPARENT_HUGEPAGE)
static inline void clear_soft_dirty_pmd(struct vm_area_struct *vma, unsigned long addr, pmd_t *pmdp) { pmd_t pmd = pmdp_huge_get_and_clear(vma->vm_mm, addr, pmdp); pmd = pmd_wrprotect(pmd); pmd = pmd_clear_soft_dirty(pmd); set_pmd_at(vma->vm_mm, addr, pmdp, pmd); }

Contributors

PersonTokensPropCommitsCommitProp
kirill a. shutemovkirill a. shutemov5183.61%133.33%
laurent dufourlaurent dufour914.75%133.33%
martin schwidefskymartin schwidefsky11.64%133.33%
Total61100.00%3100.00%

#else
static inline void clear_soft_dirty_pmd(struct vm_area_struct *vma, unsigned long addr, pmd_t *pmdp) { }

Contributors

PersonTokensPropCommitsCommitProp
kirill a. shutemovkirill a. shutemov19100.00%1100.00%
Total19100.00%1100.00%

#endif
static int clear_refs_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, struct mm_walk *walk) { struct clear_refs_private *cp = walk->private; struct vm_area_struct *vma = walk->vma; pte_t *pte, ptent; spinlock_t *ptl; struct page *page; ptl = pmd_trans_huge_lock(pmd, vma); if (ptl) { if (cp->type == CLEAR_REFS_SOFT_DIRTY) { clear_soft_dirty_pmd(vma, addr, pmd); goto out; } page = pmd_page(*pmd); /* Clear accessed and referenced bits. */ pmdp_test_and_clear_young(vma, addr, pmd); test_and_clear_page_young(page); ClearPageReferenced(page); out: spin_unlock(ptl); return 0; } if (pmd_trans_unstable(pmd)) return 0; pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl); for (; addr != end; pte++, addr += PAGE_SIZE) { ptent = *pte; if (cp->type == CLEAR_REFS_SOFT_DIRTY) { clear_soft_dirty(vma, addr, pte); continue; } if (!pte_present(ptent)) continue; page = vm_normal_page(vma, addr, ptent); if (!page) continue; /* Clear accessed and referenced bits. */ ptep_test_and_clear_young(vma, addr, pte); test_and_clear_page_young(page); ClearPageReferenced(page); } pte_unmap_unlock(pte - 1, ptl); cond_resched(); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
matt mackallmatt mackall8934.36%15.26%
kirill a. shutemovkirill a. shutemov6525.10%315.79%
pavel emelianovpavel emelianov2810.81%210.53%
al viroal viro145.41%15.26%
eric w. biedermaneric w. biederman124.63%15.26%
dave hansendave hansen103.86%210.53%
andrea arcangeliandrea arcangeli103.86%15.26%
vladimir davydovvladimir davydov103.86%15.26%
cyrill gorcunovcyrill gorcunov93.47%15.26%
andrew mortonandrew morton51.93%210.53%
prasanna medaprasanna meda31.16%15.26%
christoph hellwigchristoph hellwig20.77%15.26%
mauricio linmauricio lin10.39%15.26%
naoya horiguchinaoya horiguchi10.39%15.26%
Total259100.00%19100.00%


static int clear_refs_test_walk(unsigned long start, unsigned long end, struct mm_walk *walk) { struct clear_refs_private *cp = walk->private; struct vm_area_struct *vma = walk->vma; if (vma->vm_flags & VM_PFNMAP) return 1; /* * Writing 1 to /proc/pid/clear_refs affects all pages. * Writing 2 to /proc/pid/clear_refs only affects anonymous pages. * Writing 3 to /proc/pid/clear_refs only affects file mapped pages. * Writing 4 to /proc/pid/clear_refs affects all pages. */ if (cp->type == CLEAR_REFS_ANON && vma->vm_file) return 1; if (cp->type == CLEAR_REFS_MAPPED && !vma->vm_file) return 1; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
naoya horiguchinaoya horiguchi83100.00%2100.00%
Total83100.00%2100.00%


static ssize_t clear_refs_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { struct task_struct *task; char buffer[PROC_NUMBUF]; struct mm_struct *mm; struct vm_area_struct *vma; enum clear_refs_types type; int itype; int rv; memset(buffer, 0, sizeof(buffer)); if (count > sizeof(buffer) - 1) count = sizeof(buffer) - 1; if (copy_from_user(buffer, buf, count)) return -EFAULT; rv = kstrtoint(strstrip(buffer), 10, &itype); if (rv < 0) return rv; type = (enum clear_refs_types)itype; if (type < CLEAR_REFS_ALL || type >= CLEAR_REFS_LAST) return -EINVAL; task = get_proc_task(file_inode(file)); if (!task) return -ESRCH; mm = get_task_mm(task); if (mm) { struct clear_refs_private cp = { .type = type, }; struct mm_walk clear_refs_walk = { .pmd_entry = clear_refs_pte_range, .test_walk = clear_refs_test_walk, .mm = mm, .private = &cp, }; if (type == CLEAR_REFS_MM_HIWATER_RSS) { if (down_write_killable(&mm->mmap_sem)) { count = -EINTR; goto out_mm; } /* * Writing 5 to /proc/pid/clear_refs resets the peak * resident set size to this mm's current rss value. */ reset_mm_hiwater_rss(mm); up_write(&mm->mmap_sem); goto out_mm; } down_read(&mm->mmap_sem); if (type == CLEAR_REFS_SOFT_DIRTY) { for (vma = mm->mmap; vma; vma = vma->vm_next) { if (!(vma->vm_flags & VM_SOFTDIRTY)) continue; up_read(&mm->mmap_sem); if (down_write_killable(&mm->mmap_sem)) { count = -EINTR; goto out_mm; } for (vma = mm->mmap; vma; vma = vma->vm_next) { vma->vm_flags &= ~VM_SOFTDIRTY; vma_set_page_prot(vma); } downgrade_write(&mm->mmap_sem); break; } mmu_notifier_invalidate_range_start(mm, 0, -1); } walk_page_range(0, mm->highest_vm_end, &clear_refs_walk); if (type == CLEAR_REFS_SOFT_DIRTY) mmu_notifier_invalidate_range_end(mm, 0, -1); flush_tlb_mm(mm); up_read(&mm->mmap_sem); out_mm: mmput(mm); } put_task_struct(task); return count; }

Contributors

PersonTokensPropCommitsCommitProp
matt mackallmatt mackall13630.77%15.88%
peter feinerpeter feiner8619.46%15.88%
pavel emelianovpavel emelianov6514.71%317.65%
eric w. biedermaneric w. biederman368.14%211.76%
petr cermakpetr cermak337.47%15.88%
michal hockomichal hocko276.11%15.88%
alexey dobriyanalexey dobriyan132.94%15.88%
dave hansendave hansen112.49%15.88%
vincent livincent li92.04%15.88%
moussa a. bamoussa a. ba92.04%15.88%
naoya horiguchinaoya horiguchi61.36%15.88%
andrew mortonandrew morton51.13%15.88%
james morsejames morse30.68%15.88%
al viroal viro30.68%15.88%
Total442100.00%17100.00%

const struct file_operations proc_clear_refs_operations = { .write = clear_refs_write, .llseek = noop_llseek, }; typedef struct { u64 pme; } pagemap_entry_t; struct pagemapread { int pos, len; /* units: PM_ENTRY_BYTES, not bytes */ pagemap_entry_t *buffer; bool show_pfn; }; #define PAGEMAP_WALK_SIZE (PMD_SIZE) #define PAGEMAP_WALK_MASK (PMD_MASK) #define PM_ENTRY_BYTES sizeof(pagemap_entry_t) #define PM_PFRAME_BITS 55 #define PM_PFRAME_MASK GENMASK_ULL(PM_PFRAME_BITS - 1, 0) #define PM_SOFT_DIRTY BIT_ULL(55) #define PM_MMAP_EXCLUSIVE BIT_ULL(56) #define PM_FILE BIT_ULL(61) #define PM_SWAP BIT_ULL(62) #define PM_PRESENT BIT_ULL(63) #define PM_END_OF_BUFFER 1
static inline pagemap_entry_t make_pme(u64 frame, u64 flags) { return (pagemap_entry_t) { .pme = (frame & PM_PFRAME_MASK) | flags }; }

Contributors

PersonTokensPropCommitsCommitProp
naoya horiguchinaoya horiguchi1963.33%150.00%
konstantin khlebnikovkonstantin khlebnikov1136.67%150.00%
Total30100.00%2100.00%


static int add_to_pagemap(unsigned long addr, pagemap_entry_t *pme, struct pagemapread *pm) { pm->buffer[pm->pos++] = *pme; if (pm->pos >= pm->len) return PM_END_OF_BUFFER; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
matt mackallmatt mackall3164.58%125.00%
kamezawa hiroyukikamezawa hiroyuki714.58%125.00%
thomas tuttlethomas tuttle510.42%125.00%
naoya horiguchinaoya horiguchi510.42%125.00%
Total48100.00%4100.00%


static int pagemap_pte_hole(unsigned long start, unsigned long end, struct mm_walk *walk) { struct pagemapread *pm = walk->private; unsigned long addr = start; int err = 0; while (addr < end) { struct vm_area_struct *vma = find_vma(walk->mm, addr); pagemap_entry_t pme = make_pme(0, 0); /* End of address space hole, which we mark as non-present. */ unsigned long hole_end; if (vma) hole_end = min(end, vma->vm_start); else hole_end = end; for (; addr < hole_end; addr += PAGE_SIZE) { err = add_to_pagemap(addr, &pme, pm); if (err) goto out; } if (!vma) break; /* Addresses in the VMA. */ if (vma->vm_flags & VM_SOFTDIRTY) pme = make_pme(0, PM_SOFT_DIRTY); for (; addr < min(end, vma->vm_end); addr += PAGE_SIZE) { err = add_to_pagemap(addr, &pme, pm); if (err) goto out; } } out: return err; }

Contributors

PersonTokensPropCommitsCommitProp
peter feinerpeter feiner11458.16%233.33%
matt mackallmatt mackall6131.12%116.67%
naoya horiguchinaoya horiguchi94.59%116.67%
konstantin khlebnikovkonstantin khlebnikov73.57%116.67%
dave hansendave hansen52.55%116.67%
Total196100.00%6100.00%


static pagemap_entry_t pte_to_pagemap_entry(struct pagemapread *pm, struct vm_area_struct *vma, unsigned long addr, pte_t pte) { u64 frame = 0, flags = 0; struct page *page = NULL; if (pte_present(pte)) { if (pm->show_pfn) frame = pte_pfn(pte); flags |= PM_PRESENT; page = vm_normal_page(vma, addr, pte); if (pte_soft_dirty(pte)) flags |= PM_SOFT_DIRTY; } else if (is_swap_pte(pte)) { swp_entry_t entry; if (pte_swp_soft_dirty(pte)) flags |= PM_SOFT_DIRTY; entry = pte_to_swp_entry(pte); frame = swp_type(entry) | (swp_offset(entry) << MAX_SWAPFILES_SHIFT); flags |= PM_SWAP; if (is_migration_entry(entry)) page = migration_entry_to_page(entry); } if (page && !PageAnon(page)) flags |= PM_FILE; if (page && page_mapcount(page) == 1) flags |= PM_MMAP_EXCLUSIVE; if (vma->vm_flags & VM_SOFTDIRTY) flags |= PM_SOFT_DIRTY; return make_pme(frame, flags); }

Contributors

PersonTokensPropCommitsCommitProp
konstantin khlebnikovkonstantin khlebnikov12863.68%535.71%
cyrill gorcunovcyrill gorcunov2713.43%321.43%
matt mackallmatt mackall2110.45%17.14%
dave hansendave hansen115.47%17.14%
pavel emelianovpavel emelianov115.47%214.29%
naoya horiguchinaoya horiguchi21.00%17.14%
adrian bunkadrian bunk10.50%17.14%
Total201100.00%14100.00%


static int pagemap_pmd_range(pmd_t *pmdp, unsigned long addr, unsigned long end, struct mm_walk *walk) { struct vm_area_struct *vma = walk->vma; struct pagemapread *pm = walk->private; spinlock_t *ptl; pte_t *pte, *orig_pte; int err = 0; #ifdef CONFIG_TRANSPARENT_HUGEPAGE ptl = pmd_trans_huge_lock(pmdp, vma); if (ptl) { u64 flags = 0, frame = 0; pmd_t pmd = *pmdp; if ((vma->vm_flags & VM_SOFTDIRTY) || pmd_soft_dirty(pmd)) flags |= PM_SOFT_DIRTY; /* * Currently pmd for thp is always present because thp * can not be swapped-out, migrated, or HWPOISONed * (split in such cases instead.) * This if-check is just to prepare for future implementation. */ if (pmd_present(pmd)) { struct page *page = pmd_page(pmd); if (page_mapcount(page) == 1) flags |= PM_MMAP_EXCLUSIVE; flags |= PM_PRESENT; if (pm->show_pfn) frame = pmd_pfn(pmd) + ((addr & ~PMD_MASK) >> PAGE_SHIFT); } for (; addr != end; addr += PAGE_SIZE) { pagemap_entry_t pme = make_pme(frame, flags); err = add_to_pagemap(addr, &pme, pm); if (err) break; if (pm->show_pfn && (flags & PM_PRESENT)) frame++; } spin_unlock(ptl); return err; } if (pmd_trans_unstable(pmdp)) return 0; #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ /* * We can assume that @vma always points to a valid one and @end never * goes beyond vma->vm_end. */ orig_pte = pte = pte_offset_map_lock(walk->mm, pmdp, addr, &ptl); for (; addr < end; pte++, addr += PAGE_SIZE) { pagemap_entry_t pme; pme = pte_to_pagemap_entry(pm, vma, addr, *pte); err = add_to_pagemap(addr, &pme, pm); if (err) break; } pte_unmap_unlock(orig_pte, ptl); cond_resched(); return err; }

Contributors

PersonTokensPropCommitsCommitProp
konstantin khlebnikovkonstantin khlebnikov14744.82%630.00%
matt mackallmatt mackall7121.65%15.00%
naoya horiguchinaoya horiguchi4212.80%420.00%
peter feinerpeter feiner164.88%15.00%
dave hansendave hansen123.66%210.00%
kirill a. shutemovkirill a. shutemov113.35%210.00%
cyrill gorcunovcyrill gorcunov103.05%15.00%
pavel emelianovpavel emelianov103.05%210.00%
andrea arcangeliandrea arcangeli92.74%15.00%
Total328100.00%20100.00%

#ifdef CONFIG_HUGETLB_PAGE /* This function walks within one hugetlb entry in the single call */
static int pagemap_hugetlb_range(pte_t *ptep, unsigned long hmask, unsigned long addr, unsigned long end, struct mm_walk *walk) { struct pagemapread *pm = walk->private; struct vm_area_struct *vma = walk->vma; u64 flags = 0, frame = 0; int err = 0; pte_t pte; if (vma->vm_flags & VM_SOFTDIRTY) flags |= PM_SOFT_DIRTY; pte = huge_ptep_get(ptep); if (pte_present(pte)) { struct page *page = pte_page(pte); if (!PageAnon(page)) flags |= PM_FILE; if (page_mapcount(page) == 1) flags |= PM_MMAP_EXCLUSIVE; flags |= PM_PRESENT; if (pm->show_pfn) frame = pte_pfn(pte) + ((addr & ~hmask) >> PAGE_SHIFT); } for (; addr != end; addr += PAGE_SIZE) { pagemap_entry_t pme = make_pme(frame, flags); err = add_to_pagemap(addr, &pme, pm); if (err) return err; if (pm->show_pfn && (flags & PM_PRESENT)) frame++; } cond_resched(); return err; }

Contributors

PersonTokensPropCommitsCommitProp
konstantin khlebnikovkonstantin khlebnikov11754.17%444.44%
naoya horiguchinaoya horiguchi8338.43%444.44%
cyrill gorcunovcyrill gorcunov167.41%111.11%
Total216100.00%9100.00%

#endif /* HUGETLB_PAGE */ /* * /proc/pid/pagemap - an array mapping virtual pages to pfns * * For each page in the address space, this file contains one 64-bit entry * consisting of the following: * * Bits 0-54 page frame number (PFN) if present * Bits 0-4 swap type if swapped * Bits 5-54 swap offset if swapped * Bit 55 pte is soft-dirty (see Documentation/vm/soft-dirty.txt) * Bit 56 page exclusively mapped * Bits 57-60 zero * Bit 61 page is file-page or shared-anon * Bit 62 page swapped * Bit 63 page present * * If the page is not present but in swap, then the PFN contains an * encoding of the swap file number and the page's offset into the * swap. Unmapped pages return a null PFN. This allows determining * precisely which pages are mapped (or in swap) and comparing mapped * pages between processes. * * Efficient users of this interface will use /proc/pid/maps to * determine which areas of memory are actually mapped and llseek to * skip over unmapped regions. */
static ssize_t pagemap_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { struct mm_struct *mm = file->private_data; struct pagemapread pm; struct mm_walk pagemap_walk = {}; unsigned long src; unsigned long svpfn; unsigned long start_vaddr; unsigned long end_vaddr; int ret = 0, copied = 0; if (!mm || !atomic_inc_not_zero(&mm->mm_users)) goto out; ret = -EINVAL; /* file position must be aligned */ if ((*ppos % PM_ENTRY_BYTES) || (count % PM_ENTRY_BYTES)) goto out_mm; ret = 0; if (!count) goto out_mm; /* do not disclose physical addresses: attack vector */ pm.show_pfn = file_ns_capable(file, &init_user_ns, CAP_SYS_ADMIN); pm.len = (PAGEMAP_WALK_SIZE >> PAGE_SHIFT); pm.buffer = kmalloc(pm.len * PM_ENTRY_BYTES, GFP_TEMPORARY); ret = -ENOMEM; if (!pm.buffer) goto out_mm; pagemap_walk.pmd_entry = pagemap_pmd_range; pagemap_walk.pte_hole = pagemap_pte_hole; #ifdef CONFIG_HUGETLB_PAGE pagemap_walk.hugetlb_entry = pagemap_hugetlb_range; #endif pagemap_walk.mm = mm; pagemap_walk.private = &pm; src = *ppos; svpfn = src / PM_ENTRY_BYTES; start_vaddr = svpfn << PAGE_SHIFT; end_vaddr = mm->task_size; /* watch out for wraparound */ if (svpfn > mm->task_size >> PAGE_SHIFT) start_vaddr = end_vaddr; /* * The odds are that this will stop walking way * before end_vaddr, because the length of the * user buffer is tracked in "pm", and the walk * will stop when we hit the end of the buffer. */ ret = 0; while (count && (start_vaddr < end_vaddr)) { int len; unsigned long end; pm.pos = 0; end = (start_vaddr + PAGEMAP_WALK_SIZE) & PAGEMAP_WALK_MASK; /* overflow ? */ if (end < start_vaddr || end > end_vaddr) end = end_vaddr; down_read(&mm->mmap_sem); ret = walk_page_range(start_vaddr, end, &pagemap_walk); up_read(&mm->mmap_sem); start_vaddr = end; len = min(count, PM_ENTRY_BYTES * pm.pos); if (copy_to_user(buf, pm.buffer, len)) { ret = -EFAULT; goto out_free; } copied += len; buf += len; count -= len; } *ppos += copied; if (!ret || ret == PM_END_OF_BUFFER) ret = copied; out_free: kfree(pm.buffer); out_mm: mmput(mm); out: return ret; }

Contributors

PersonTokensPropCommitsCommitProp
matt mackallmatt mackall14333.81%17.69%
kamezawa hiroyukikamezawa hiroyuki14133.33%17.69%
andrew mortonandrew morton5713.48%17.69%
konstantin khlebnikovkonstantin khlebnikov4711.11%323.08%
naoya horiguchinaoya horiguchi153.55%323.08%
thomas tuttlethomas tuttle92.13%17.69%
vitaly mayatskikhvitaly mayatskikh71.65%17.69%
alexey dobriyanalexey dobriyan20.47%17.69%
yonghua zhengyonghua zheng20.47%17.69%
Total423100.00%13100.00%


static int pagemap_open(struct inode *inode, struct file *file) { struct mm_struct *mm; mm = proc_mem_open(inode, PTRACE_MODE_READ); if (IS_ERR(mm)) return PTR_ERR(mm); file->private_data = mm; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
konstantin khlebnikovkonstantin khlebnikov3771.15%150.00%
pavel emelianovpavel emelianov1528.85%150.00%
Total52100.00%2100.00%


static int pagemap_release(struct inode *inode, struct file *file) { struct mm_struct *mm = file->private_data; if (mm) mmdrop(mm); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
konstantin khlebnikovkonstantin khlebnikov3389.19%150.00%
pavel emelianovpavel emelianov410.81%150.00%
Total37100.00%2100.00%

const struct file_operations proc_pagemap_operations = { .llseek = mem_lseek, /* borrow this */ .read = pagemap_read, .open = pagemap_open, .release = pagemap_release, }; #endif /* CONFIG_PROC_PAGE_MONITOR */ #ifdef CONFIG_NUMA struct numa_maps { unsigned long pages; unsigned long anon; unsigned long active; unsigned long writeback; unsigned long mapcount_max; unsigned long dirty; unsigned long swapcache; unsigned long node[MAX_NUMNODES]; }; struct numa_maps_private { struct proc_maps_private proc_maps; struct numa_maps md; };
static void gather_stats(struct page *page, struct numa_maps *md, int pte_dirty, unsigned long nr_pages) { int count = page_mapcount(page); md->pages += nr_pages; if (pte_dirty || PageDirty(page)) md->dirty += nr_pages; if (PageSwapCache(page)) md->swapcache += nr_pages; if (PageActive(page) || PageUnevictable(page)) md->active += nr_pages; if (PageWriteback(page)) md->writeback += nr_pages; if (PageAnon(page)) md->anon += nr_pages; if (count > md->mapcount_max) md->mapcount_max = count; md->node[page_to_nid(page)] += nr_pages; }

Contributors

PersonTokensPropCommitsCommitProp
stephen wilsonstephen wilson11786.67%150.00%
dave hansendave hansen1813.33%150.00%
Total135100.00%2100.00%


static struct page *can_gather_numa_stats(pte_t pte, struct vm_area_struct *vma, unsigned long addr) { struct page *page; int nid; if (!pte_present(pte)) return NULL; page = vm_normal_page(vma, addr, pte); if (!page) return NULL; if (PageReserved(page)) return NULL; nid = page_to_nid(page); if (!node_isset(nid, node_states[N_MEMORY])) return NULL; return page; }

Contributors

PersonTokensPropCommitsCommitProp
dave hansendave hansen9398.94%150.00%
lai jiangshanlai jiangshan11.06%150.00%
Total94100.00%2100.00%

#ifdef CONFIG_TRANSPARENT_HUGEPAGE
static struct page *can_gather_numa_stats_pmd(pmd_t pmd, struct vm_area_struct *vma, unsigned long addr) { struct page *page; int nid; if (!pmd_present(pmd)) return NULL; page = vm_normal_page_pmd(vma, addr, pmd); if (!page) return NULL; if (PageReserved(page)) return NULL; nid = page_to_nid(page); if (!node_isset(nid, node_states[N_MEMORY])) return NULL; return page; }

Contributors

PersonTokensPropCommitsCommitProp
gerald schaefergerald schaefer94100.00%1100.00%
Total94100.00%1100.00%

#endif
static int gather_pte_stats(pmd_t *pmd, unsigned long addr, unsigned long end, struct mm_walk *walk) { struct numa_maps *md = walk->private; struct vm_area_struct *vma = walk->vma; spinlock_t *ptl; pte_t *orig_pte; pte_t *pte; #ifdef CONFIG_TRANSPARENT_HUGEPAGE ptl = pmd_trans_huge_lock(pmd, vma); if (ptl) { struct page *page; page = can_gather_numa_stats_pmd(*pmd, vma, addr); if (page) gather_stats(page, md, pmd_dirty(*pmd), HPAGE_PMD_SIZE/PAGE_SIZE); spin_unlock(ptl); return 0; } if (pmd_trans_unstable(pmd)) return 0; #endif orig_pte = pte = pte_offset_map_lock(walk->mm, pmd, addr, &ptl); do { struct page *page = can_gather_numa_stats(*pte, vma, addr); if (!page) continue; gather_stats(page, md, pte_dirty(*pte), 1); } while (pte++, addr += PAGE_SIZE, addr != end); pte_unmap_unlock(orig_pte, ptl); cond_resched(); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
stephen wilsonstephen wilson11553.99%19.09%
dave hansendave hansen5123.94%327.27%
naoya horiguchinaoya horiguchi167.51%218.18%
gerald schaefergerald schaefer115.16%19.09%
andrea arcangeliandrea arcangeli104.69%19.09%
kirill a. shutemovkirill a. shutemov73.29%218.18%
hugh dickinshugh dickins31.41%19.09%
Total213100.00%11100.00%

#ifdef CONFIG_HUGETLB_PAGE
static int gather_hugetlb_stats(pte_t *pte, unsigned long hmask, unsigned long addr, unsigned long end, struct mm_walk *walk) { pte_t huge_pte = huge_ptep_get(pte); struct numa_maps *md; struct page *page; if (!pte_present(huge_pte)) return 0; page = pte_page(huge_pte); if (!page) return 0; md = walk->private; gather_stats(page, md, pte_dirty(huge_pte), 1); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
stephen wilsonstephen wilson7882.98%120.00%
michael holzheumichael holzheu1111.70%120.00%
naoya horiguchinaoya horiguchi33.19%240.00%
dave hansendave hansen22.13%120.00%
Total94100.00%5100.00%

#else
static int gather_hugetlb_stats(pte_t *pte, unsigned long hmask, unsigned long addr, unsigned long end, struct mm_walk *walk) { return 0; }

Contributors

PersonTokensPropCommitsCommitProp
stephen wilsonstephen wilson2996.67%150.00%
naoya horiguchinaoya horiguchi13.33%150.00%
Total30100.00%2100.00%

#endif /* * Display pages allocated per node and memory policy via /proc. */
static int show_numa_map(struct seq_file *m, void *v, int is_pid) { struct numa_maps_private *numa_priv = m->private; struct proc_maps_private *proc_priv = &numa_priv->proc_maps; struct vm_area_struct *vma = v; struct numa_maps *md = &numa_priv->md; struct file *file = vma->vm_file; struct mm_struct *mm = vma->vm_mm; struct mm_walk walk = { .hugetlb_entry = gather_hugetlb_stats, .pmd_entry = gather_pte_stats, .private = md, .mm = mm, }; struct mempolicy *pol; char buffer[64]; int nid; if (!mm) return 0; /* Ensure we start with an empty set of numa_maps statistics. */ memset(md, 0, sizeof(*md)); pol = __get_vma_policy(vma, vma->vm_start); if (pol) { mpol_to_str(buffer, sizeof(buffer), pol); mpol_cond_put(pol); } else { mpol_to_str(buffer, sizeof(buffer), proc_priv->task_mempolicy); } seq_printf(m, "%08lx %s", vma->vm_start, buffer); if (file) { seq_puts(m, " file="); seq_file_path(m, file, "\n\t= "); } else if (vma->vm_start <= mm->brk && vma->vm_end >= mm->start_brk) { seq_puts(m, " heap"); } else if (is_stack(proc_priv, vma)) { seq_puts(m, " stack"); } if (is_vm_hugetlb_page(vma)) seq_puts(m, " huge"); /* mmap_sem is held by m_start */ walk_page_vma(vma, &walk); if (!md->pages) goto out; if (md->anon) seq_printf(m, " anon=%lu", md->anon); if (md->dirty) seq_printf(m, " dirty=%lu", md->dirty); if (md->pages != md->anon && md->pages != md->dirty) seq_printf(m, " mapped=%lu", md->pages); if (md->mapcount_max > 1) seq_printf(m, " mapmax=%lu", md->mapcount_max); if (md->swapcache) seq_printf(m, " swapcache=%lu", md->swapcache); if (md->active < md->pages && !is_vm_hugetlb_page(vma)) seq_printf(m, " active=%lu", md->active); if (md->writeback) seq_printf(m, " writeback=%lu", md->writeback); for_each_node_state(nid, N_MEMORY) if (md->node[nid]) seq_printf(m, " N%d=%lu", nid, md->node[nid]); seq_printf(m, " kernelpagesize_kB=%lu", vma_kernel_pagesize(vma) >> 10); out: seq_putc(m, '\n'); m_cache_vma(m, vma); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
stephen wilsonstephen wilson39177.12%213.33%
oleg nesterovoleg nesterov326.31%320.00%
naoya horiguchinaoya horiguchi234.54%16.67%
rafael aquinirafael aquini142.76%16.67%
andrew mortonandrew morton132.56%16.67%
siddhesh poyarekarsiddhesh poyarekar91.78%16.67%
david rientjesdavid rientjes81.58%16.67%
christoph lameterchristoph lameter71.38%16.67%
johannes weinerjohannes weiner40.79%16.67%
fabian frederickfabian frederick40.79%16.67%
lai jiangshanlai jiangshan10.20%16.67%
miklos szeredimiklos szeredi10.20%16.67%
Total507100.00%15100.00%


static int show_pid_numa_map(struct seq_file *m, void *v) { return show_numa_map(m, v, 1); }

Contributors

PersonTokensPropCommitsCommitProp
siddhesh poyarekarsiddhesh poyarekar25100.00%1100.00%
Total25100.00%1100.00%


static int show_tid_numa_map(struct seq_file *m, void *v) { return show_numa_map(m, v, 0); }

Contributors

PersonTokensPropCommitsCommitProp
siddhesh poyarekarsiddhesh poyarekar25100.00%1100.00%
Total25100.00%1100.00%

static const struct seq_operations proc_pid_numa_maps_op = { .start = m_start, .next = m_next, .stop = m_stop, .show = show_pid_numa_map, }; static const struct seq_operations proc_tid_numa_maps_op = { .start = m_start, .next = m_next, .stop = m_stop, .show = show_tid_numa_map, };
static int numa_maps_open(struct inode *inode, struct file *file, const struct seq_operations *ops) { return proc_maps_open(inode, file, ops, sizeof(struct numa_maps_private)); }

Contributors

PersonTokensPropCommitsCommitProp
eric w. biedermaneric w. biederman1950.00%125.00%
oleg nesterovoleg nesterov821.05%125.00%
siddhesh poyarekarsiddhesh poyarekar718.42%125.00%
stephen wilsonstephen wilson410.53%125.00%
Total38100.00%4100.00%


static int pid_numa_maps_open(struct inode *inode, struct file *file) { return numa_maps_open(inode, file, &proc_pid_numa_maps_op); }

Contributors

PersonTokensPropCommitsCommitProp
siddhesh poyarekarsiddhesh poyarekar27100.00%1100.00%
Total27100.00%1100.00%


static int tid_numa_maps_open(struct inode *inode, struct file *file) { return numa_maps_open(inode, file, &proc_tid_numa_maps_op); }

Contributors

PersonTokensPropCommitsCommitProp
siddhesh poyarekarsiddhesh poyarekar27100.00%1100.00%
Total27100.00%1100.00%

const struct file_operations proc_pid_numa_maps_operations = { .open = pid_numa_maps_open, .read = seq_read, .llseek = seq_lseek, .release = proc_map_release, }; const struct file_operations proc_tid_numa_maps_operations = { .open = tid_numa_maps_open, .read = seq_read, .llseek = seq_lseek, .release = proc_map_release, }; #endif /* CONFIG_NUMA */

Overall Contributors

PersonTokensPropCommitsCommitProp
matt mackallmatt mackall129615.62%63.31%
stephen wilsonstephen wilson7969.59%21.10%
kirill a. shutemovkirill a. shutemov6007.23%105.52%
konstantin khlebnikovkonstantin khlebnikov5987.21%105.52%
naoya horiguchinaoya horiguchi5556.69%179.39%
siddhesh poyarekarsiddhesh poyarekar5016.04%10.55%
oleg nesterovoleg nesterov4675.63%137.18%
dave hansendave hansen4405.30%105.52%
cyrill gorcunovcyrill gorcunov4395.29%42.21%
kamezawa hiroyukikamezawa hiroyuki2933.53%52.76%
pavel emelianovpavel emelianov2212.66%52.76%
peter feinerpeter feiner2162.60%42.21%
vlastimil babkavlastimil babka2042.46%31.66%
christoph hellwigchristoph hellwig1571.89%10.55%
eric w. biedermaneric w. biederman1201.45%31.66%
gerald schaefergerald schaefer1101.33%10.55%
andrew mortonandrew morton881.06%63.31%
hugh dickinshugh dickins831.00%42.21%
minchan kimminchan kim780.94%21.10%
jerome marchandjerome marchand720.87%21.10%
william lee irwin iiiwilliam lee irwin iii720.87%31.66%
laurent dufourlaurent dufour700.84%21.10%
mauricio linmauricio lin660.80%10.55%
andrea arcangeliandrea arcangeli570.69%31.66%
christoph lameterchristoph lameter570.69%31.66%
al viroal viro550.66%31.66%
david rientjesdavid rientjes400.48%42.21%
nikanth karthikesannikanth karthikesan380.46%21.10%
petr cermakpetr cermak350.42%10.55%
andy lutomirskiandy lutomirski340.41%21.10%
johannes weinerjohannes weiner290.35%10.55%
joe kortyjoe korty280.34%10.55%
michal hockomichal hocko270.33%10.55%
alexey dobriyanalexey dobriyan260.31%42.21%
linus torvaldslinus torvalds250.30%31.66%
peter zijlstrapeter zijlstra230.28%10.55%
mikulas patockamikulas patocka220.27%10.55%
tetsuo handatetsuo handa220.27%10.55%
vladimir davydovvladimir davydov180.22%10.55%
prasanna medaprasanna meda180.22%10.55%
ingo molnaringo molnar170.20%21.10%
mel gormanmel gorman160.19%21.10%
qiaowei renqiaowei ren140.17%10.55%
thomas tuttlethomas tuttle140.17%10.55%
rafael aquinirafael aquini140.17%10.55%
robert horobert ho130.16%10.55%
michael holzheumichael holzheu110.13%10.55%
dan williamsdan williams100.12%10.55%
vincent livincent li90.11%10.55%
hans rosenfeldhans rosenfeld90.11%10.55%
moussa a. bamoussa a. ba90.11%10.55%
stefan baderstefan bader70.08%10.55%
vitaly mayatskikhvitaly mayatskikh70.08%10.55%
kosaki motohirokosaki motohiro60.07%21.10%
david howellsdavid howells60.07%10.55%
arnd bergmannarnd bergmann50.06%10.55%
jan engelhardtjan engelhardt40.05%10.55%
yonghua zhengyonghua zheng40.05%10.55%
fabian frederickfabian frederick40.05%10.55%
tejun heotejun heo30.04%10.55%
davidlohr buesodavidlohr bueso30.04%10.55%
kees cookkees cook30.04%10.55%
james morsejames morse30.04%10.55%
martin schwidefskymartin schwidefsky20.02%10.55%
lai jiangshanlai jiangshan20.02%10.55%
arjan van de venarjan van de ven20.02%10.55%
miklos szeredimiklos szeredi20.02%10.55%
aaro koskinenaaro koskinen20.02%10.55%
adrian bunkadrian bunk10.01%10.55%
nick pigginnick piggin10.01%10.55%
Total8299100.00%181100.00%
Directory: fs/proc
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