diff options
Diffstat (limited to 'Documentation/vm')
| -rw-r--r-- | Documentation/vm/00-INDEX | 50 | ||||
| -rw-r--r-- | Documentation/vm/hmm.rst | 14 | ||||
| -rw-r--r-- | Documentation/vm/slub.rst | 12 |
3 files changed, 16 insertions, 60 deletions
diff --git a/Documentation/vm/00-INDEX b/Documentation/vm/00-INDEX deleted file mode 100644 index f4a4f3e884cf6..0000000000000 --- a/Documentation/vm/00-INDEX +++ /dev/null @@ -1,50 +0,0 @@ -00-INDEX - - this file. -active_mm.rst - - An explanation from Linus about tsk->active_mm vs tsk->mm. -balance.rst - - various information on memory balancing. -cleancache.rst - - Intro to cleancache and page-granularity victim cache. -frontswap.rst - - Outline frontswap, part of the transcendent memory frontend. -highmem.rst - - Outline of highmem and common issues. -hmm.rst - - Documentation of heterogeneous memory management -hugetlbfs_reserv.rst - - A brief overview of hugetlbfs reservation design/implementation. -hwpoison.rst - - explains what hwpoison is -ksm.rst - - how to use the Kernel Samepage Merging feature. -mmu_notifier.rst - - a note about clearing pte/pmd and mmu notifications -numa.rst - - information about NUMA specific code in the Linux vm. -overcommit-accounting.rst - - description of the Linux kernels overcommit handling modes. -page_frags.rst - - description of page fragments allocator -page_migration.rst - - description of page migration in NUMA systems. -page_owner.rst - - tracking about who allocated each page -remap_file_pages.rst - - a note about remap_file_pages() system call -slub.rst - - a short users guide for SLUB. -split_page_table_lock.rst - - Separate per-table lock to improve scalability of the old page_table_lock. -swap_numa.rst - - automatic binding of swap device to numa node -transhuge.rst - - Transparent Hugepage Support, alternative way of using hugepages. -unevictable-lru.rst - - Unevictable LRU infrastructure -z3fold.txt - - outline of z3fold allocator for storing compressed pages -zsmalloc.rst - - outline of zsmalloc allocator for storing compressed pages -zswap.rst - - Intro to compressed cache for swap pages diff --git a/Documentation/vm/hmm.rst b/Documentation/vm/hmm.rst index cdf3911582c86..44205f0b671fa 100644 --- a/Documentation/vm/hmm.rst +++ b/Documentation/vm/hmm.rst @@ -194,13 +194,13 @@ use either:: unsigned long start, unsigned long end, hmm_pfn_t *pfns); - int hmm_vma_fault(struct vm_area_struct *vma, - struct hmm_range *range, - unsigned long start, - unsigned long end, - hmm_pfn_t *pfns, - bool write, - bool block); + int hmm_vma_fault(struct vm_area_struct *vma, + struct hmm_range *range, + unsigned long start, + unsigned long end, + hmm_pfn_t *pfns, + bool write, + bool block); The first one (hmm_vma_get_pfns()) will only fetch present CPU page table entries and will not trigger a page fault on missing or non-present entries. diff --git a/Documentation/vm/slub.rst b/Documentation/vm/slub.rst index 3a775fd64e2db..195928808bac7 100644 --- a/Documentation/vm/slub.rst +++ b/Documentation/vm/slub.rst @@ -36,9 +36,10 @@ debugging is enabled. Format: slub_debug=<Debug-Options> Enable options for all slabs -slub_debug=<Debug-Options>,<slab name> - Enable options only for select slabs +slub_debug=<Debug-Options>,<slab name1>,<slab name2>,... + Enable options only for select slabs (no spaces + after a comma) Possible debug options are:: @@ -62,7 +63,12 @@ Trying to find an issue in the dentry cache? Try:: slub_debug=,dentry -to only enable debugging on the dentry cache. +to only enable debugging on the dentry cache. You may use an asterisk at the +end of the slab name, in order to cover all slabs with the same prefix. For +example, here's how you can poison the dentry cache as well as all kmalloc +slabs: + + slub_debug=P,kmalloc-*,dentry Red zoning and tracking may realign the slab. We can just apply sanity checks to the dentry cache with:: |