The patch titled Subject: proc/smaps: show amount of nonlinear ptes in vma has been added to the -mm tree. Its filename is proc-smaps-show-amount-of-nonlinear-ptes-in-vma.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxx> Subject: proc/smaps: show amount of nonlinear ptes in vma Currently, nonlinear mappings can not be distinguished from ordinary mappings. This patch adds into /proc/pid/smaps line "Nonlinear: <size> kB", where size is amount of nonlinear ptes in vma, this line appears only if VM_NONLINEAR is set. This information may be useful not only for checkpoint/restore project. Requested by Pavel Emelyanov. Signed-off-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxx> Cc: Andi Kleen <andi@xxxxxxxxxxxxxx> Cc: Pavel Emelyanov <xemul@xxxxxxxxxxxxx> Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/proc/task_mmu.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff -puN fs/proc/task_mmu.c~proc-smaps-show-amount-of-nonlinear-ptes-in-vma fs/proc/task_mmu.c --- a/fs/proc/task_mmu.c~proc-smaps-show-amount-of-nonlinear-ptes-in-vma +++ a/fs/proc/task_mmu.c @@ -393,6 +393,7 @@ struct mem_size_stats { unsigned long anonymous; unsigned long anonymous_thp; unsigned long swap; + unsigned long nonlinear; u64 pss; }; @@ -402,6 +403,7 @@ static void smaps_pte_entry(pte_t ptent, { struct mem_size_stats *mss = walk->private; struct vm_area_struct *vma = mss->vma; + pgoff_t pgoff = linear_page_index(vma, addr); struct page *page = NULL; int mapcount; @@ -414,6 +416,9 @@ static void smaps_pte_entry(pte_t ptent, mss->swap += ptent_size; else if (is_migration_entry(swpent)) page = migration_entry_to_page(swpent); + } else if (pte_file(ptent)) { + if (pte_to_pgoff(ptent) != pgoff) + mss->nonlinear += ptent_size; } if (!page) @@ -422,6 +427,9 @@ static void smaps_pte_entry(pte_t ptent, if (PageAnon(page)) mss->anonymous += ptent_size; + if (page->index != pgoff) + mss->nonlinear += ptent_size; + mss->resident += ptent_size; /* Accumulate the size in pages that have been accessed. */ if (pte_young(ptent) || PageReferenced(page)) @@ -523,6 +531,10 @@ static int show_smap(struct seq_file *m, (vma->vm_flags & VM_LOCKED) ? (unsigned long)(mss.pss >> (10 + PSS_SHIFT)) : 0); + if (vma->vm_flags & VM_NONLINEAR) + seq_printf(m, "Nonlinear: %8lu kB\n", + mss.nonlinear >> 10); + if (m->count < m->size) /* vma is copied successfully */ m->version = (vma != get_gate_vma(task->mm)) ? vma->vm_start : 0; _ Subject: Subject: proc/smaps: show amount of nonlinear ptes in vma Patches currently in -mm which might be from khlebnikov@xxxxxxxxxx are linux-next.patch mm-remove-swap-token-code.patch mm-vmscan-remove-lumpy-reclaim.patch mm-vmscan-do-not-stall-on-writeback-during-memory-compaction.patch mm-vmscan-remove-reclaim_mode_t.patch mm-correctly-synchronize-rss-counters-at-exit-exec.patch kernel-cgroup-push-rcu-read-locking-from-css_is_ancestor-to-callsite.patch mm-memcg-count-pte-references-from-every-member-of-the-reclaimed-hierarchy.patch mm-memcg-count-pte-references-from-every-member-of-the-reclaimed-hierarchy-fix.patch mm-memcg-scanning_global_lru-means-mem_cgroup_disabled.patch mm-memcg-move-reclaim_stat-into-lruvec.patch mm-push-lru-index-into-shrink_active_list.patch mm-push-lru-index-into-shrink_active_list-fix.patch mm-mark-mm-inline-functions-as-__always_inline.patch mm-remove-lru-type-checks-from-__isolate_lru_page.patch mm-memcg-kill-mem_cgroup_lru_del.patch mm-memcg-use-vm_swappiness-from-target-memory-cgroup.patch proc-smaps-carefully-handle-migration-entries.patch proc-smaps-show-amount-of-nonlinear-ptes-in-vma.patch proc-smaps-show-amount-of-hwpoison-pages.patch fork-call-complete_vfork_done-after-clearing-child_tid-and-flushing-rss-counters.patch c-r-prctl-add-ability-to-set-new-mm_struct-exe_file-update-after-mm-num_exe_file_vmas-removal.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html