diff options
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/api-summary.rst | 3 | ||||
| -rw-r--r-- | Documentation/filesystems/buffer.rst | 12 | ||||
| -rw-r--r-- | Documentation/filesystems/index.rst | 1 | ||||
| -rw-r--r-- | Documentation/filesystems/proc.rst | 29 |
4 files changed, 42 insertions, 3 deletions
diff --git a/Documentation/filesystems/api-summary.rst b/Documentation/filesystems/api-summary.rst index 98db2ea5fa12..cc5cc7f3fbd8 100644 --- a/Documentation/filesystems/api-summary.rst +++ b/Documentation/filesystems/api-summary.rst @@ -56,9 +56,6 @@ Other Functions .. kernel-doc:: fs/namei.c :export: -.. kernel-doc:: fs/buffer.c - :export: - .. kernel-doc:: block/bio.c :export: diff --git a/Documentation/filesystems/buffer.rst b/Documentation/filesystems/buffer.rst new file mode 100644 index 000000000000..ae24faf68efa --- /dev/null +++ b/Documentation/filesystems/buffer.rst @@ -0,0 +1,12 @@ +Buffer Heads +============ + +Linux uses buffer heads to maintain state about individual filesystem blocks. +Buffer heads are deprecated and new filesystems should use iomap instead. + +Functions +--------- + +.. kernel-doc:: include/linux/buffer_head.h +.. kernel-doc:: fs/buffer.c + :export: diff --git a/Documentation/filesystems/index.rst b/Documentation/filesystems/index.rst index 1f9b4c905a6a..8f5c1ee02e2f 100644 --- a/Documentation/filesystems/index.rst +++ b/Documentation/filesystems/index.rst @@ -50,6 +50,7 @@ filesystem implementations. .. toctree:: :maxdepth: 2 + buffer journalling fscrypt fsverity diff --git a/Documentation/filesystems/proc.rst b/Documentation/filesystems/proc.rst index 707e39280a9a..4d97258a7954 100644 --- a/Documentation/filesystems/proc.rst +++ b/Documentation/filesystems/proc.rst @@ -688,6 +688,7 @@ files are there, and which are missing. ============ =============================================================== File Content ============ =============================================================== + allocinfo Memory allocations profiling information apm Advanced power management info bootconfig Kernel command line obtained from boot config, and, if there were kernel parameters from the @@ -953,6 +954,34 @@ also be allocatable although a lot of filesystem metadata may have to be reclaimed to achieve this. +allocinfo +~~~~~~~~~ + +Provides information about memory allocations at all locations in the code +base. Each allocation in the code is identified by its source file, line +number, module (if originates from a loadable module) and the function calling +the allocation. The number of bytes allocated and number of calls at each +location are reported. + +Example output. + +:: + + > sort -rn /proc/allocinfo + 127664128 31168 mm/page_ext.c:270 func:alloc_page_ext + 56373248 4737 mm/slub.c:2259 func:alloc_slab_page + 14880768 3633 mm/readahead.c:247 func:page_cache_ra_unbounded + 14417920 3520 mm/mm_init.c:2530 func:alloc_large_system_hash + 13377536 234 block/blk-mq.c:3421 func:blk_mq_alloc_rqs + 11718656 2861 mm/filemap.c:1919 func:__filemap_get_folio + 9192960 2800 kernel/fork.c:307 func:alloc_thread_stack_node + 4206592 4 net/netfilter/nf_conntrack_core.c:2567 func:nf_ct_alloc_hashtable + 4136960 1010 drivers/staging/ctagmod/ctagmod.c:20 [ctagmod] func:ctagmod_start + 3940352 962 mm/memory.c:4214 func:alloc_anon_folio + 2894464 22613 fs/kernfs/dir.c:615 func:__kernfs_new_node + ... + + meminfo ~~~~~~~ |