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Linus Torvalds d30e51aa7b slab updates for 6.8 
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Merge tag 'slab-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab

Pull slab updates from Vlastimil Babka:

 - SLUB: delayed freezing of CPU partial slabs (Chengming Zhou)

   Freezing is an operation involving double_cmpxchg() that makes a slab
   exclusive for a particular CPU. Chengming noticed that we use it also
   in situations where we are not yet installing the slab as the CPU
   slab, because freezing also indicates that the slab is not on the
   shared list. This results in redundant freeze/unfreeze operation and
   can be avoided by marking separately the shared list presence by
   reusing the PG_workingset flag.

   This approach neatly avoids the issues described in 9b1ea29bc0
   ("Revert "mm, slub: consider rest of partial list if acquire_slab()
   fails"") as we can now grab a slab from the shared list in a quick
   and guaranteed way without the cmpxchg_double() operation that
   amplifies the lock contention and can fail.

   As a result, lkp has reported 34.2% improvement of
   stress-ng.rawudp.ops_per_sec

 - SLAB removal and SLUB cleanups (Vlastimil Babka)

   The SLAB allocator has been deprecated since 6.5 and nobody has
   objected so far. We agreed at LSF/MM to wait until the next LTS,
   which is 6.6, so we should be good to go now.

   This doesn't yet erase all traces of SLAB outside of mm/ so some dead
   code, comments or documentation remain, and will be cleaned up
   gradually (some series are already in the works).

   Removing the choice of allocators has already allowed to simplify and
   optimize the code wiring up the kmalloc APIs to the SLUB
   implementation.

* tag 'slab-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab: (34 commits)
  mm/slub: free KFENCE objects in slab_free_hook()
  mm/slub: handle bulk and single object freeing separately
  mm/slub: introduce __kmem_cache_free_bulk() without free hooks
  mm/slub: fix bulk alloc and free stats
  mm/slub: optimize free fast path code layout
  mm/slub: optimize alloc fastpath code layout
  mm/slub: remove slab_alloc() and __kmem_cache_alloc_lru() wrappers
  mm/slab: move kmalloc() functions from slab_common.c to slub.c
  mm/slab: move kmalloc_slab() to mm/slab.h
  mm/slab: move kfree() from slab_common.c to slub.c
  mm/slab: move struct kmem_cache_node from slab.h to slub.c
  mm/slab: move memcg related functions from slab.h to slub.c
  mm/slab: move pre/post-alloc hooks from slab.h to slub.c
  mm/slab: consolidate includes in the internal mm/slab.h
  mm/slab: move the rest of slub_def.h to mm/slab.h
  mm/slab: move struct kmem_cache_cpu declaration to slub.c
  mm/slab: remove mm/slab.c and slab_def.h
  mm/mempool/dmapool: remove CONFIG_DEBUG_SLAB ifdefs
  mm/slab: remove CONFIG_SLAB code from slab common code
  cpu/hotplug: remove CPUHP_SLAB_PREPARE hooks
  ...
2024-01-09 10:36:07 -08:00
..
boot x86/cleanups changes for v6.8: 2024-01-08 17:23:32 -08:00
coco x86/cleanups changes for v6.8: 2024-01-08 17:23:32 -08:00
configs hardening updates for v6.7-rc1 2023-10-30 19:09:55 -10:00
crypto arch/x86: Fix typos 2024-01-03 11:46:22 +01:00
entry x86/entry changes for v6.8: 2024-01-08 17:48:35 -08:00
events Performance events changes for v6.8 are: 2024-01-08 19:37:20 -08:00
hyperv x86/cleanups changes for v6.8: 2024-01-08 17:23:32 -08:00
ia32
include Performance events changes for v6.8 are: 2024-01-08 19:37:20 -08:00
kernel Performance events changes for v6.8 are: 2024-01-08 19:37:20 -08:00
kvm x86/cleanups changes for v6.8: 2024-01-08 17:23:32 -08:00
lib x86/cleanups changes for v6.8: 2024-01-08 17:23:32 -08:00
math-emu x86/fpu: Include asm/fpu/regset.h 2023-05-18 11:56:18 -07:00
mm x86/cleanups changes for v6.8: 2024-01-08 17:23:32 -08:00
net x86/cleanups changes for v6.8: 2024-01-08 17:23:32 -08:00
pci x86/PCI: Avoid PME from D3hot/D3cold for AMD Rembrandt and Phoenix USB4 2023-10-06 09:09:47 -05:00
platform x86/cleanups changes for v6.8: 2024-01-08 17:23:32 -08:00
power x86/topology: Remove CPU0 hotplug option 2023-05-15 13:44:49 +02:00
purgatory x86/purgatory: Remove LTO flags 2023-09-17 09:49:03 +02:00
ras
realmode x86/cleanups changes for v6.8: 2024-01-08 17:23:32 -08:00
tools x86/build changes for v6.8: 2024-01-08 17:22:02 -08:00
um UML: remove unused cmd_vdso_install 2023-10-18 17:16:09 +09:00
video fbdev: Replace fb_pgprotect() with pgprot_framebuffer() 2023-10-12 09:20:46 +02:00
virt x86/virt/tdx: Make TDX_MODULE_CALL handle SEAMCALL #UD and #GP 2023-09-12 16:30:27 -07:00
xen x86/cleanups changes for v6.8: 2024-01-08 17:23:32 -08:00
.gitignore
Kbuild
Kconfig slab updates for 6.8 2024-01-09 10:36:07 -08:00
Kconfig.assembler x86/shstk: Add Kconfig option for shadow stack 2023-07-11 14:12:18 -07:00
Kconfig.cpu x86/Kconfig: Rework CONFIG_X86_PAE dependency 2023-12-19 13:03:06 +01:00
Kconfig.debug
Makefile Kbuild updates for v6.7 2023-11-04 08:07:19 -10:00
Makefile_32.cpu
Makefile.postlink kbuild: remove ARCH_POSTLINK from module builds 2023-10-28 21:10:08 +09:00
Makefile.um