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22d407b164
Introduce CONFIG_MEM_ALLOC_PROFILING which provides definitions to easily instrument memory allocators. It registers an "alloc_tags" codetag type with /proc/allocinfo interface to output allocation tag information when the feature is enabled. CONFIG_MEM_ALLOC_PROFILING_DEBUG is provided for debugging the memory allocation profiling instrumentation. Memory allocation profiling can be enabled or disabled at runtime using /proc/sys/vm/mem_profiling sysctl when CONFIG_MEM_ALLOC_PROFILING_DEBUG=n. CONFIG_MEM_ALLOC_PROFILING_ENABLED_BY_DEFAULT enables memory allocation profiling by default. [surenb@google.com: Documentation/filesystems/proc.rst: fix allocinfo title] Link: https://lkml.kernel.org/r/20240326073813.727090-1-surenb@google.com [surenb@google.com: do limited memory accounting for modules with ARCH_NEEDS_WEAK_PER_CPU] Link: https://lkml.kernel.org/r/20240402180933.1663992-2-surenb@google.com [klarasmodin@gmail.com: explicitly include irqflags.h in alloc_tag.h] Link: https://lkml.kernel.org/r/20240407133252.173636-1-klarasmodin@gmail.com [surenb@google.com: fix alloc_tag_init() to prevent passing NULL to PTR_ERR()] Link: https://lkml.kernel.org/r/20240417003349.2520094-1-surenb@google.com Link: https://lkml.kernel.org/r/20240321163705.3067592-14-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Co-developed-by: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Klara Modin <klarasmodin@gmail.com> Tested-by: Kees Cook <keescook@chromium.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alex Gaynor <alex.gaynor@gmail.com> Cc: Alice Ryhl <aliceryhl@google.com> Cc: Andreas Hindborg <a.hindborg@samsung.com> Cc: Benno Lossin <benno.lossin@proton.me> Cc: "Björn Roy Baron" <bjorn3_gh@protonmail.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Christoph Lameter <cl@linux.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Gary Guo <gary@garyguo.net> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Wedson Almeida Filho <wedsonaf@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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| .. | ||
| bcachefs | ||
| caching | ||
| ext4 | ||
| nfs | ||
| smb | ||
| spufs | ||
| xfs | ||
| 9p.rst | ||
| adfs.rst | ||
| affs.rst | ||
| afs.rst | ||
| api-summary.rst | ||
| autofs-mount-control.rst | ||
| autofs.rst | ||
| automount-support.rst | ||
| befs.rst | ||
| bfs.rst | ||
| btrfs.rst | ||
| ceph.rst | ||
| coda.rst | ||
| configfs.rst | ||
| cramfs.rst | ||
| dax.rst | ||
| debugfs.rst | ||
| devpts.rst | ||
| directory-locking.rst | ||
| dlmfs.rst | ||
| dnotify.rst | ||
| ecryptfs.rst | ||
| efivarfs.rst | ||
| erofs.rst | ||
| ext2.rst | ||
| ext3.rst | ||
| f2fs.rst | ||
| fiemap.rst | ||
| files.rst | ||
| fscrypt.rst | ||
| fsverity.rst | ||
| fuse-io.rst | ||
| fuse.rst | ||
| gfs2-glocks.rst | ||
| gfs2-uevents.rst | ||
| gfs2.rst | ||
| hfs.rst | ||
| hfsplus.rst | ||
| hpfs.rst | ||
| idmappings.rst | ||
| index.rst | ||
| inotify.rst | ||
| isofs.rst | ||
| journalling.rst | ||
| locking.rst | ||
| locks.rst | ||
| mount_api.rst | ||
| netfs_library.rst | ||
| nilfs2.rst | ||
| ntfs3.rst | ||
| ocfs2-online-filecheck.rst | ||
| ocfs2.rst | ||
| omfs.rst | ||
| orangefs.rst | ||
| overlayfs.rst | ||
| path-lookup.rst | ||
| path-lookup.txt | ||
| porting.rst | ||
| proc.rst | ||
| qnx6.rst | ||
| quota.rst | ||
| ramfs-rootfs-initramfs.rst | ||
| relay.rst | ||
| romfs.rst | ||
| seq_file.rst | ||
| sharedsubtree.rst | ||
| splice.rst | ||
| squashfs.rst | ||
| sysfs.rst | ||
| sysv-fs.rst | ||
| tmpfs.rst | ||
| ubifs-authentication.rst | ||
| ubifs.rst | ||
| udf.rst | ||
| vfat.rst | ||
| vfs.rst | ||
| virtiofs.rst | ||
| zonefs.rst | ||