From: Suren Baghdasaryan <surenb@google.com>
To: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Andrew Morton <akpm@linux-foundation.org>,
mhocko@suse.com, vbabka@suse.cz, hannes@cmpxchg.org,
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Alexander Viro <viro@zeniv.linux.org.uk>
Subject: Re: [PATCH v6 05/37] fs: Convert alloc_inode_sb() to a macro
Date: Thu, 21 Mar 2024 15:47:44 -0700 [thread overview]
Message-ID: <CAJuCfpEO4NjYysJ7X8ME_GjHc41u-_dK4AhrhmaSMh_9mxaHSA@mail.gmail.com> (raw)
In-Reply-To: <bliyhrwtskv5xhg3rxxszouxntrhnm3nxhcmrmdwwk4iyx5wdo@vodd22dbtn75>
On Thu, Mar 21, 2024 at 3:17 PM Kent Overstreet
<kent.overstreet@linux.dev> wrote:
>
> On Thu, Mar 21, 2024 at 03:09:08PM -0700, Andrew Morton wrote:
> > On Thu, 21 Mar 2024 17:15:39 -0400 Kent Overstreet <kent.overstreet@linux.dev> wrote:
> >
> > > On Thu, Mar 21, 2024 at 01:31:47PM -0700, Andrew Morton wrote:
> > > > On Thu, 21 Mar 2024 09:36:27 -0700 Suren Baghdasaryan <surenb@google.com> wrote:
> > > >
> > > > > From: Kent Overstreet <kent.overstreet@linux.dev>
> > > > >
> > > > > We're introducing alloc tagging, which tracks memory allocations by
> > > > > callsite. Converting alloc_inode_sb() to a macro means allocations will
> > > > > be tracked by its caller, which is a bit more useful.
> > > >
> > > > I'd have thought that there would be many similar
> > > > inlines-which-allocate-memory. Such as, I dunno, jbd2_alloc_inode().
> > > > Do we have to go converting things to macros as people report
> > > > misleading or less useful results, or is there some more general
> > > > solution to this?
> > >
> > > No, this is just what we have to do.
> >
> > Well, this is something we strike in other contexts - kallsyms gives us
> > an inlined function and it's rarely what we wanted.
> >
> > I think kallsyms has all the data which is needed to fix this - how
> > hard can it be to figure out that a particular function address lies
> > within an outer function? I haven't looked...
>
> This is different, though - even if a function is inlined in multiple
> places there's only going to be one instance of a static var defined
> within that function.
I guess one simple way to detect the majority of these helpers would
be to filter all entries from /proc/allocinfo which originate from
header files.
~# grep ".*\.h:." /proc/allocinfo
933888 228 include/linux/mm.h:2863 func:pagetable_alloc
848 53 include/linux/mm_types.h:1175 func:mm_alloc_cid
0 0 include/linux/bpfptr.h:70 func:kvmemdup_bpfptr
0 0 include/linux/bpf.h:2237 func:bpf_map_kmalloc_node
0 0 include/linux/bpf.h:2256 func:bpf_map_alloc_percpu
0 0 include/linux/bpf.h:2256 func:bpf_map_alloc_percpu
0 0 include/linux/bpf.h:2237 func:bpf_map_kmalloc_node
0 0 include/linux/bpf.h:2249 func:bpf_map_kvcalloc
0 0 include/linux/bpf.h:2243 func:bpf_map_kzalloc
0 0 include/linux/bpf.h:2237 func:bpf_map_kmalloc_node
0 0 include/linux/ptr_ring.h:471
func:__ptr_ring_init_queue_alloc
0 0 include/linux/bpf.h:2256 func:bpf_map_alloc_percpu
0 0 include/linux/bpf.h:2237 func:bpf_map_kmalloc_node
0 0 include/net/tcx.h:80 func:tcx_entry_create
0 0 arch/x86/include/asm/pgalloc.h:156 func:p4d_alloc_one
487424 119 include/linux/mm.h:2863 func:pagetable_alloc
0 0 include/linux/mm.h:2863 func:pagetable_alloc
832 13 include/linux/jbd2.h:1607 func:jbd2_alloc_inode
0 0 include/linux/jbd2.h:1591 func:jbd2_alloc_handle
0 0 fs/nfs/iostat.h:51 func:nfs_alloc_iostats
0 0 include/net/netlabel.h:281 func:netlbl_secattr_cache_alloc
0 0 include/net/netlabel.h:381 func:netlbl_secattr_alloc
0 0 include/crypto/internal/acompress.h:76
func:__acomp_request_alloc
8064 84 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
1016 74 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
384 4 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
704 3 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
32 1 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
64 1 include/acpi/platform/aclinuxex.h:52 func:acpi_os_allocate
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
40 2 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:52 func:acpi_os_allocate
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:52 func:acpi_os_allocate
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:52 func:acpi_os_allocate
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:52 func:acpi_os_allocate
32 1 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:52 func:acpi_os_allocate
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:52 func:acpi_os_allocate
30000 625 include/acpi/platform/aclinuxex.h:67
func:acpi_os_acquire_object
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:52 func:acpi_os_allocate
0 0 include/acpi/platform/aclinuxex.h:67
func:acpi_os_acquire_object
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
512 1 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:52 func:acpi_os_allocate
192 6 include/acpi/platform/aclinuxex.h:52 func:acpi_os_allocate
0 0 include/acpi/platform/aclinuxex.h:52 func:acpi_os_allocate
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:52 func:acpi_os_allocate
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
192 3 include/acpi/platform/aclinuxex.h:52 func:acpi_os_allocate
61992 861 include/acpi/platform/aclinuxex.h:67
func:acpi_os_acquire_object
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 include/acpi/platform/aclinuxex.h:67
func:acpi_os_acquire_object
0 0 include/acpi/platform/aclinuxex.h:57
func:acpi_os_allocate_zeroed
0 0 drivers/iommu/amd/amd_iommu.h:141 func:alloc_pgtable_page
0 0 drivers/iommu/amd/amd_iommu.h:141 func:alloc_pgtable_page
0 0 drivers/iommu/amd/amd_iommu.h:141 func:alloc_pgtable_page
0 0 include/linux/dma-fence-chain.h:91
func:dma_fence_chain_alloc
0 0 include/linux/dma-fence-chain.h:91
func:dma_fence_chain_alloc
0 0 include/linux/dma-fence-chain.h:91
func:dma_fence_chain_alloc
0 0 include/linux/dma-fence-chain.h:91
func:dma_fence_chain_alloc
0 0 include/linux/dma-fence-chain.h:91
func:dma_fence_chain_alloc
0 0 include/linux/hid_bpf.h:154 func:call_hid_bpf_rdesc_fixup
0 0 include/linux/skbuff.h:3392 func:__dev_alloc_pages
114688 56 include/linux/ptr_ring.h:471
func:__ptr_ring_init_queue_alloc
0 0 include/linux/skmsg.h:415 func:sk_psock_init_link
0 0 include/linux/bpf.h:2237 func:bpf_map_kmalloc_node
0 0 include/linux/ptr_ring.h:628 func:ptr_ring_resize_multiple
24576 3 include/linux/ptr_ring.h:471
func:__ptr_ring_init_queue_alloc
0 0 include/net/netlink.h:1896 func:nla_memdup
0 0 include/linux/sockptr.h:97 func:memdup_sockptr
0 0 include/net/request_sock.h:131 func:reqsk_alloc
0 0 include/net/tcp.h:2456 func:tcp_v4_save_options
0 0 include/net/tcp.h:2456 func:tcp_v4_save_options
0 0 include/crypto/hash.h:586 func:ahash_request_alloc
0 0 include/linux/sockptr.h:97 func:memdup_sockptr
0 0 include/linux/sockptr.h:97 func:memdup_sockptr
0 0 net/sunrpc/auth_gss/auth_gss_internal.h:38
func:simple_get_netobj
0 0 include/crypto/hash.h:586 func:ahash_request_alloc
0 0 include/net/netlink.h:1896 func:nla_memdup
0 0 include/crypto/skcipher.h:869 func:skcipher_request_alloc
0 0 include/net/fq_impl.h:361 func:fq_init
0 0 include/net/netlabel.h:316 func:netlbl_catmap_alloc
and it finds our example:
832 13 include/linux/jbd2.h:1607 func:jbd2_alloc_inode
Interestingly the inlined functions which are called from multiple
places will have multiple entries with the same file+line:
0 0 include/linux/dma-fence-chain.h:91
func:dma_fence_chain_alloc
0 0 include/linux/dma-fence-chain.h:91
func:dma_fence_chain_alloc
0 0 include/linux/dma-fence-chain.h:91
func:dma_fence_chain_alloc
0 0 include/linux/dma-fence-chain.h:91
func:dma_fence_chain_alloc
0 0 include/linux/dma-fence-chain.h:91
func:dma_fence_chain_alloc
So, duplicate entries can be also used as an indication of an inlined allocator.
I'll go chase these down and will post a separate patch converting them.
next prev parent reply other threads:[~2024-03-21 22:47 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-21 16:36 [PATCH v6 00/37] Memory allocation profiling Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 01/37] fix missing vmalloc.h includes Suren Baghdasaryan
2024-04-03 21:12 ` Nathan Chancellor
2024-04-03 21:41 ` Kent Overstreet
2024-04-03 21:48 ` David Hildenbrand
2024-04-03 22:57 ` Kent Overstreet
2024-04-04 2:55 ` Randy Dunlap
2024-03-21 16:36 ` [PATCH v6 02/37] asm-generic/io.h: Kill vmalloc.h dependency Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 03/37] mm/slub: Mark slab_free_freelist_hook() __always_inline Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 04/37] scripts/kallysms: Always include __start and __stop symbols Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 05/37] fs: Convert alloc_inode_sb() to a macro Suren Baghdasaryan
2024-03-21 20:31 ` Andrew Morton
2024-03-21 21:13 ` Suren Baghdasaryan
2024-03-21 21:15 ` Kent Overstreet
2024-03-21 22:09 ` Andrew Morton
2024-03-21 22:17 ` Kent Overstreet
2024-03-21 22:47 ` Suren Baghdasaryan [this message]
2024-04-04 16:57 ` Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 06/37] mm: introduce slabobj_ext to support slab object extensions Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 07/37] mm: introduce __GFP_NO_OBJ_EXT flag to selectively prevent slabobj_ext creation Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 08/37] mm/slab: introduce SLAB_NO_OBJ_EXT to avoid obj_ext creation Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 09/37] slab: objext: introduce objext_flags as extension to page_memcg_data_flags Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 10/37] lib: code tagging framework Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 11/37] lib: code tagging module support Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 12/37] lib: prevent module unloading if memory is not freed Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 13/37] lib: add allocation tagging support for memory allocation profiling Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 14/37] lib: introduce support for page allocation tagging Suren Baghdasaryan
2024-03-26 3:12 ` Matthew Wilcox
2024-03-26 6:23 ` Suren Baghdasaryan
2024-03-27 3:24 ` Matthew Wilcox
2024-03-27 5:30 ` Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 15/37] lib: introduce early boot parameter to avoid page_ext memory overhead Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 16/37] mm: percpu: increase PERCPU_MODULE_RESERVE to accommodate allocation tags Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 17/37] change alloc_pages name in dma_map_ops to avoid name conflicts Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 18/37] mm: enable page allocation tagging Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 19/37] mm: create new codetag references during page splitting Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 20/37] mm: fix non-compound multi-order memory accounting in __free_pages Suren Baghdasaryan
2024-03-21 16:48 ` Matthew Wilcox
2024-03-21 17:04 ` Matthew Wilcox
2024-03-21 17:19 ` Suren Baghdasaryan
2024-03-21 17:22 ` Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 21/37] mm/page_ext: enable early_page_ext when CONFIG_MEM_ALLOC_PROFILING_DEBUG=y Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 22/37] lib: add codetag reference into slabobj_ext Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 23/37] mm/slab: add allocation accounting into slab allocation and free paths Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 24/37] rust: Add a rust helper for krealloc() Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 25/37] mm/slab: enable slab allocation tagging for kmalloc and friends Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 26/37] mempool: Hook up to memory allocation profiling Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 27/37] mm: percpu: Introduce pcpuobj_ext Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 28/37] mm: percpu: Add codetag reference into pcpuobj_ext Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 29/37] mm: percpu: enable per-cpu allocation tagging Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 30/37] mm: vmalloc: Enable memory allocation profiling Suren Baghdasaryan
2024-03-23 18:05 ` SeongJae Park
2024-03-25 14:56 ` Suren Baghdasaryan
2024-03-25 17:49 ` SeongJae Park
2024-03-25 17:59 ` Suren Baghdasaryan
2024-03-25 18:20 ` SeongJae Park
2024-03-26 7:51 ` Suren Baghdasaryan
2024-03-26 15:39 ` SeongJae Park
2024-04-16 19:27 ` Sourav Panda
2024-03-21 16:36 ` [PATCH v6 31/37] rhashtable: Plumb through alloc tag Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 32/37] lib: add memory allocations report in show_mem() Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 33/37] codetag: debug: skip objext checking when it's for objext itself Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 34/37] codetag: debug: mark codetags for reserved pages as empty Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 35/37] codetag: debug: introduce OBJEXTS_ALLOC_FAIL to mark failed slab_ext allocations Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 36/37] MAINTAINERS: Add entries for code tagging and memory allocation profiling Suren Baghdasaryan
2024-03-21 16:36 ` [PATCH v6 37/37] memprofiling: Documentation Suren Baghdasaryan
2024-03-21 20:41 ` [PATCH v6 00/37] Memory allocation profiling Andrew Morton
2024-03-21 21:08 ` Suren Baghdasaryan
2024-04-05 13:37 ` Klara Modin
2024-04-05 14:14 ` Suren Baghdasaryan
2024-04-05 14:30 ` Klara Modin
2024-04-05 15:20 ` Suren Baghdasaryan
2024-04-05 15:37 ` Klara Modin
2024-04-06 21:42 ` Suren Baghdasaryan
2024-04-25 1:59 ` Kees Cook
2024-04-25 3:25 ` Kent Overstreet
2024-04-25 15:39 ` Suren Baghdasaryan
2024-04-25 20:00 ` Kees Cook
2024-04-25 21:35 ` Suren Baghdasaryan
2024-04-25 20:08 ` Kees Cook
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