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Uros Bizjak f56810c94c mm/vmalloc: use __this_cpu_try_cmpxchg() in preload_this_cpu_lock() 
Use __this_cpu_try_cmpxchg() instead of __this_cpu_cmpxchg (*ptr, old,
new) == old in preload_this_cpu_lock().  x86 CMPXCHG instruction returns
success in ZF flag, so this change saves a compare after cmpxchg.

The generated code improves from:

    4bb6:	48 85 f6             	test   %rsi,%rsi
    4bb9:	0f 84 10 fa ff ff    	je     45cf <...>
    4bbf:	4c 89 e8             	mov    %r13,%rax
    4bc2:	65 48 0f b1 35 00 00 	cmpxchg %rsi,%gs:0x0(%rip)
    4bc9:	00 00
    4bcb:	48 85 c0             	test   %rax,%rax
    4bce:	0f 84 fb f9 ff ff    	je     45cf <...>

to:

    4bb6:	48 85 f6             	test   %rsi,%rsi
    4bb9:	0f 84 10 fa ff ff    	je     45cf <...>
    4bbf:	4c 89 e8             	mov    %r13,%rax
    4bc2:	65 48 0f b1 35 00 00 	cmpxchg %rsi,%gs:0x0(%rip)
    4bc9:	00 00
    4bcb:	0f 84 fe f9 ff ff    	je     45cf <...>

No functional change intended.

Link: https://lkml.kernel.org/r/20240528144345.5980-2-ubizjak@gmail.com
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-07-03 19:30:02 -07:00
..
damon
mm/damon/core: fix return value from damos_wmark_metric_value
2024-05-11 15:41:36 -07:00
kasan
kasan: fix bad call to unpoison_slab_object
2024-06-24 20:52:09 -07:00
kfence
mm/kfence: add MODULE_DESCRIPTION()
2024-07-03 19:29:58 -07:00
kmsan
kmsan: do not wipe out origin when doing partial unpoisoning
2024-06-05 19:19:25 -07:00
backing-dev.c
writeback: support retrieving per group debug writeback stats of bdi
2024-05-05 17:53:51 -07:00
balloon_compaction.c
mm: remove MIGRATE_SYNC_NO_COPY mode
2024-07-03 19:30:00 -07:00
bootmem_info.c
bootmem: use kmemleak_free_part_phys in put_page_bootmem
2023-10-25 16:47:13 -07:00
cma_debug.c
…
cma_sysfs.c
mm/cma: add sysfs file 'release_pages_success'
2024-02-22 10:24:57 -08:00
cma.c
mm/cma: drop incorrect alignment check in cma_init_reserved_mem
2024-04-25 20:56:42 -07:00
cma.h
mm/cma: add sysfs file 'release_pages_success'
2024-02-22 10:24:57 -08:00
compaction.c
mm: handle profiling for fake memory allocations during compaction
2024-06-24 20:52:09 -07:00
debug_page_alloc.c
mm: page_alloc: consolidate free page accounting
2024-04-25 20:56:04 -07:00
debug_page_ref.c
…
debug_vm_pgtable.c
mm/debug_vm_pgtable: drop RANDOM_ORVALUE trick
2024-06-15 10:43:08 -07:00
debug.c
mm/debug: print only page mapcount (excluding folio entire mapcount) in __dump_folio()
2024-05-05 17:53:31 -07:00
dmapool_test.c
mm/dmapool: add MODULE_DESCRIPTION()
2024-07-03 19:29:58 -07:00
dmapool.c
mm/mempool/dmapool: remove CONFIG_DEBUG_SLAB ifdefs
2023-12-05 11:17:58 +01:00
early_ioremap.c
…
execmem.c
mm/execmem, arch: convert remaining overrides of module_alloc to execmem
2024-05-14 00:31:43 -07:00
fadvise.c
mm: remove unnecessary pagevec includes
2023-06-23 16:59:31 -07:00
fail_page_alloc.c
…
failslab.c
…
filemap.c
mm: fix xyz_noprof functions calling profiled functions
2024-06-05 19:19:26 -07:00
folio-compat.c
mm: remove page_mapping()
2024-07-03 19:29:59 -07:00
gup_test.c
Merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes.
2023-06-23 16:58:19 -07:00
gup_test.h
…
gup.c
mm/gup: fix hugepd handling in hugetlb rework
2024-05-07 10:37:01 -07:00
highmem.c
x86/kexec: use pr_err() instead of kexec_dprintk() when an error occurs
2023-12-29 12:22:28 -08:00
hmm.c
mm/treewide: replace pXd_huge() with pXd_leaf()
2024-04-25 20:55:46 -07:00
huge_memory.c
mm/swap: reduce swap cache search space
2024-07-03 19:29:56 -07:00
hugetlb_cgroup.c
mm/hugetlb: assert hugetlb_lock in __hugetlb_cgroup_commit_charge
2024-05-05 17:53:41 -07:00
hugetlb_vmemmap.c
memory: remove the now superfluous sentinel element from ctl_table array
2024-04-25 20:56:32 -07:00
hugetlb_vmemmap.h
mm: hugetlb_vmemmap: fix reference to nonexistent file
2023-10-25 16:47:14 -07:00
hugetlb.c
mm/hugetlb: drop node_alloc_noretry from alloc_fresh_hugetlb_folio
2024-07-03 19:29:52 -07:00
hwpoison-inject.c
mm/hwpoison: add MODULE_DESCRIPTION()
2024-07-03 19:29:58 -07:00
init-mm.c
mm: Deprecate pasid field
2023-12-12 10:11:32 +01:00
internal.h
mm: introduce pte_move_swp_offset() helper which can move offset bidirectionally
2024-07-03 19:30:01 -07:00
interval_tree.c
…
io-mapping.c
…
ioremap.c
mm: ioremap: remove unneeded ioremap_allowed and iounmap_allowed
2023-08-18 10:12:36 -07:00
Kconfig
The usual shower of singleton fixes and minor series all over MM,
2024-05-19 09:21:03 -07:00
Kconfig.debug
mm/slub: unify all sl[au]b parameters with "slab_$param"
2024-01-22 10:31:08 +01:00
khugepaged.c
mm: simplify thp_vma_allowable_order
2024-05-05 17:53:53 -07:00
kmemleak.c
mm: lift gfp_kmemleak_mask() to gfp.h
2024-05-19 14:40:44 -07:00
ksm.c
mm/ksm: fix ksm_zero_pages accounting
2024-06-05 19:19:26 -07:00
list_lru.c
mm/zswap: stop lru list shrinking when encounter warm region
2024-02-22 10:24:54 -08:00
maccess.c
…
madvise.c
mm/madvise: add MF_ACTION_REQUIRED to madvise(MADV_HWPOISON)
2024-07-03 19:29:57 -07:00
Makefile
mseal: add mseal syscall
2024-05-23 19:40:26 -07:00
mapping_dirty_helpers.c
mm: fix clean_record_shared_mapping_range kernel-doc
2023-08-24 16:20:30 -07:00
memblock.c
memblock: use numa_valid_node() helper to check for invalid node ID
2024-06-16 10:17:57 +03:00
memcontrol.c
mm: memcontrol: remove page_memcg()
2024-07-03 19:29:59 -07:00
memfd.c
mm/memfd: refactor memfd_tag_pins() and memfd_wait_for_pins()
2024-03-04 17:01:21 -08:00
memory_hotplug.c
mm/hugetlb: mm/memory_hotplug: use a folio in scan_movable_pages()
2024-07-03 19:30:02 -07:00
memory-failure.c
mm/memory-failure: use helper llist_for_each_entry()
2024-07-03 19:29:59 -07:00
memory-tiers.c
memory tier: create CPUless memory tiers after obtaining HMAT info
2024-05-05 17:53:26 -07:00
memory.c
mm: swap: entirely map large folios found in swapcache
2024-07-03 19:30:01 -07:00
mempolicy.c
mm: mempolicy: use folio_alloc_mpol() in alloc_migration_target_by_mpol()
2024-07-03 19:29:53 -07:00
mempool.c
mm: fix xyz_noprof functions calling profiled functions
2024-06-05 19:19:26 -07:00
memremap.c
mm: convert put_devmap_managed_page_refs() to put_devmap_managed_folio_refs()
2024-05-05 17:53:49 -07:00
memtest.c
memtest: use {READ,WRITE}_ONCE in memory scanning
2024-03-13 12:12:21 -07:00
migrate_device.c
mm: migrate_device: unify migrate folio for MIGRATE_SYNC_NO_COPY
2024-07-03 19:30:00 -07:00
migrate.c
mm: remove MIGRATE_SYNC_NO_COPY mode
2024-07-03 19:30:00 -07:00
mincore.c
mm/swap: reduce swap cache search space
2024-07-03 19:29:56 -07:00
mlock.c
mm: add pmd_folio()
2024-04-25 20:56:19 -07:00
mm_init.c
mm/mm_init: use node's number of cpus in deferred_page_init_max_threads
2024-07-03 19:29:58 -07:00
mm_slot.h
…
mmap_lock.c
…
mmap.c
mm: batch unlink_file_vma calls in free_pgd_range
2024-07-03 19:29:58 -07:00
mmu_gather.c
mm/mmu_gather: improve cond_resched() handling with large folios and expensive page freeing
2024-02-22 15:27:17 -08:00
mmu_notifier.c
mmu_notifier: remove the .change_pte() callback
2024-04-11 13:18:36 -04:00
mmzone.c
zswap: shrink zswap pool based on memory pressure
2023-12-12 10:57:02 -08:00
mprotect.c
mm/memory: cleanly support zeropage in vm_insert_page*(), vm_map_pages*() and vmf_insert_mixed()
2024-07-03 19:29:56 -07:00
mremap.c
mseal: add mseal syscall
2024-05-23 19:40:26 -07:00
mseal.c
mseal: add mseal syscall
2024-05-23 19:40:26 -07:00
msync.c
…
nommu.c
The usual shower of singleton fixes and minor series all over MM,
2024-05-19 09:21:03 -07:00
oom_kill.c
memory: remove the now superfluous sentinel element from ctl_table array
2024-04-25 20:56:32 -07:00
page_alloc.c
mm/page_alloc: Separate THP PCP into movable and non-movable categories
2024-06-24 20:52:11 -07:00
page_counter.c
…
page_ext.c
mm: make page_ext_get() take a const argument
2024-04-25 20:56:14 -07:00
page_idle.c
…
page_io.c
mm/swap: get the swap device offset directly
2024-07-03 19:29:55 -07:00
page_isolation.c
mm: page_isolation: prepare for hygienic freelists
2024-04-25 20:56:04 -07:00
page_owner.c
mm/page-owner: use gfp_nested_mask() instead of open coded masking
2024-05-19 14:40:44 -07:00
page_poison.c
mm/page_poison: replace kmap_atomic() with kmap_local_page()
2023-12-10 16:51:50 -08:00
page_reporting.c
mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER
2024-01-08 15:27:15 -08:00
page_reporting.h
…
page_table_check.c
mm/page_table_check: fix crash on ZONE_DEVICE
2024-06-15 10:43:04 -07:00
page_vma_mapped.c
mm: make page_mapped_in_vma conditional on CONFIG_MEMORY_FAILURE
2024-05-05 17:53:45 -07:00
page-writeback.c
writeback: factor out balance_wb_limits to remove repeated code
2024-07-03 19:29:54 -07:00
pagewalk.c
mm: pagewalk: assert write mmap lock only for walking the user page tables
2023-12-10 16:51:53 -08:00
percpu-internal.h
mm: percpu: add codetag reference into pcpuobj_ext
2024-04-25 20:55:56 -07:00
percpu-km.c
…
percpu-stats.c
…
percpu-vm.c
percpu: clean up all mappings when pcpu_map_pages() fails
2024-04-25 20:55:49 -07:00
percpu.c
mm: percpu: enable per-cpu allocation tagging
2024-04-25 20:55:56 -07:00
pgalloc-track.h
…
pgtable-generic.c
mm: fix race between __split_huge_pmd_locked() and GUP-fast
2024-05-07 10:37:00 -07:00
process_vm_access.c
mm: fix process_vm_rw page counts
2023-12-10 16:51:39 -08:00
ptdump.c
mm: ptdump: add check_wx_pages debugfs attribute
2024-02-22 10:24:47 -08:00
readahead.c
The usual shower of singleton fixes and minor series all over MM,
2024-05-19 09:21:03 -07:00
rmap.c
mm: rmap: abstract updating per-node and per-memcg stats
2024-07-03 19:30:01 -07:00
rodata_test.c
…
secretmem.c
mm/secretmem: use a folio in secretmem_fault()
2023-08-21 13:38:02 -07:00
shmem_quota.c
tmpfs: fix race on handling dquot rbtree
2024-03-26 11:07:23 -07:00
shmem.c
mm/swap: reduce swap cache search space
2024-07-03 19:29:56 -07:00
show_mem.c
lib: add memory allocations report in show_mem()
2024-04-25 20:55:57 -07:00
shrinker_debug.c
mm: shrinker: convert shrinker_rwsem to mutex
2023-10-04 10:32:26 -07:00
shrinker.c
mm: shrinker: use kvzalloc_node() from expand_one_shrinker_info()
2024-01-05 09:58:32 -08:00
shuffle.c
…
shuffle.h
mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER
2024-01-08 15:27:15 -08:00
slab_common.c
The usual shower of singleton fixes and minor series all over MM,
2024-05-19 09:21:03 -07:00
slab.h
The usual shower of singleton fixes and minor series all over MM,
2024-05-19 09:21:03 -07:00
slub.c
mm/slab: fix 'variable obj_exts set but not used' warning
2024-06-24 20:52:09 -07:00
sparse-vmemmap.c
mm/vmemmap: allow architectures to override how vmemmap optimization works
2023-08-18 10:12:53 -07:00
sparse.c
mm/sparse: guard the size of mem_section is power of 2
2024-05-05 17:53:40 -07:00
swap_cgroup.c
…
swap_slots.c
mm: swap: update get_swap_pages() to take folio order
2024-04-25 20:56:37 -07:00
swap_state.c
mm/swap: reduce swap cache search space
2024-07-03 19:29:56 -07:00
swap.c
mm: add kernel-doc for folio_mark_accessed()
2024-05-05 17:53:50 -07:00
swap.h
mm/swap: reduce swap cache search space
2024-07-03 19:29:56 -07:00
swapfile.c
mm: remove the implementation of swap_free() and always use swap_free_nr()
2024-07-03 19:30:01 -07:00
truncate.c
mm/vmscan: update stale references to shrink_page_list
2024-07-03 19:29:52 -07:00
usercopy.c
…
userfaultfd.c
The usual shower of singleton fixes and minor series all over MM,
2024-05-19 09:21:03 -07:00
util.c
hardening fixes for v6.10-rc5
2024-06-17 12:00:22 -07:00
vmalloc.c
mm/vmalloc: use __this_cpu_try_cmpxchg() in preload_this_cpu_lock()
2024-07-03 19:30:02 -07:00
vmpressure.c
eventfd: simplify eventfd_signal()
2023-11-28 14:08:38 +01:00
vmscan.c
mm: vmscan: reset sc->priority on retry
2024-07-03 19:29:53 -07:00
vmstat.c
iommu: observability of the IOMMU allocations
2024-04-15 14:31:47 +02:00
workingset.c
mm: cleanup WORKINGSET_NODES in workingset
2024-05-07 10:36:59 -07:00
z3fold.c
mm: zpool: return pool size in pages
2024-04-25 20:55:48 -07:00
zbud.c
mm: zpool: return pool size in pages
2024-04-25 20:55:48 -07:00
zpool.c
mm: zpool: return pool size in pages
2024-04-25 20:55:48 -07:00
zsmalloc.c
mm: remove MIGRATE_SYNC_NO_COPY mode
2024-07-03 19:30:00 -07:00
zswap.c
mm: zswap: make same_filled functions folio-friendly
2024-07-03 19:30:00 -07:00