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linux/mm
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Li RongQing 8f1ca1f373 mm/hugetlb: early exit from hugetlb_pages_alloc_boot() when max_huge_pages=0 
commit b322e88b3d upstream.

Optimize hugetlb_pages_alloc_boot() to return immediately when
max_huge_pages is 0, avoiding unnecessary CPU cycles and the below log
message when hugepages aren't configured in the kernel command line.
[    3.702280] HugeTLB: allocation took 0ms with hugepage_allocation_threads=32

Link: https://lkml.kernel.org/r/20250814102333.4428-1-lirongqing@baidu.com
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Tested-by: Dev Jain <dev.jain@arm.com>
Reviewed-by: Jane Chu <jane.chu@oracle.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-10-19 16:23:18 +02:00
..
damon mm/damon/lru_sort: avoid divide-by-zero in damon_lru_sort_apply_parameters() 2025-09-19 16:29:57 +02:00
kasan mm: introduce and use {pgd,p4d}_populate_kernel() 2025-09-19 16:29:55 +02:00
kfence kfence: skip __GFP_THISNODE allocations on NUMA systems 2025-02-21 13:49:48 +01:00
kmsan kmsan: fix out-of-bounds access to shadow memory 2025-10-02 13:40:43 +02:00
backing-dev.c writeback, cgroup: fix null-ptr-deref write in bdi_split_work_to_wbs 2023-04-26 14:28:39 +02:00
balloon_compaction.c mm: Convert all PageMovable users to movable_operations 2022-08-02 12:34:03 -04:00
bootmem_info.c bootmem: remove the vmemmap pages from kmemleak in put_page_bootmem 2022-08-28 14:02:45 -07:00
cma.c mm/cma: drop incorrect alignment check in cma_init_reserved_mem 2024-06-16 13:41:39 +02:00
cma.h mm/cma: provide option to opt out from exposing pages on activation failure 2022-03-22 15:57:09 -07:00
cma_debug.c mm/cma_debug: show complete cma name in debugfs directories 2022-09-11 20:25:50 -07:00
cma_sysfs.c mm: cma: support sysfs 2021-05-05 11:27:24 -07:00
compaction.c mm, vmscan: prevent infinite loop for costly GFP_NOIO | __GFP_RETRY_MAYFAIL allocations 2024-04-03 15:19:42 +02:00
debug.c mm: remove the vma linked list 2022-09-26 19:46:26 -07:00
debug_page_ref.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
debug_vm_pgtable.c mm/debug_vm_pgtable: clear page table entries at destroy_args() 2025-08-28 16:26:13 +02:00
dmapool.c mm/dmapool.c: revert "make dma pool to use kmalloc_node" 2022-01-15 16:30:28 +02:00
early_ioremap.c mm/early_ioremap: declare early_memremap_pgprot_adjust() 2022-03-22 15:57:11 -07:00
fadvise.c riscv: compat: syscall: Add compat_sys_call_table implementation 2022-04-26 13:36:25 -07:00
failslab.c mm: fix unexpected changes to {failslab|fail_page_alloc}.attr 2022-11-22 18:50:44 -08:00
filemap.c mm: drop the assumption that VM_SHARED always implies writable 2025-08-28 16:26:12 +02:00
folio-compat.c mm: remove try_to_free_swap() 2022-10-03 14:02:53 -07:00
frontswap.c frontswap: don't call ->init if no ops are registered 2022-09-26 12:14:34 -07:00
gup.c mm: folio_may_be_lru_cached() unless folio_test_large() 2025-10-02 13:40:37 +02:00
gup_test.c mm: rename is_pinnable_page() to is_longterm_pinnable_page() 2022-07-17 17:14:27 -07:00
gup_test.h selftests/vm: gup_test: fix test flag 2021-05-05 11:27:26 -07:00
highmem.c highmem: fix kmap_to_page() for kmap_local_page() addresses 2022-10-12 18:51:51 -07:00
hmm.c mm/hmm: move pmd_to_hmm_pfn_flags() to the respective #ifdeffery 2025-08-15 12:05:13 +02:00
huge_memory.c mm/huge_memory: fix dereferencing invalid pmd migration entry 2025-06-27 11:07:38 +01:00
hugetlb.c mm/hugetlb: early exit from hugetlb_pages_alloc_boot() when max_huge_pages=0 2025-10-19 16:23:18 +02:00
hugetlb_cgroup.c mm/hugetlb_cgroup: convert hugetlb_cgroup_uncharge_page() to folios 2024-05-17 11:55:52 +02:00
hugetlb_vmemmap.c mm: hugetlb_vmemmap: fix a race between vmemmap pmd split 2023-09-19 12:27:56 +02:00
hugetlb_vmemmap.h mm: hugetlb_vmemmap: improve hugetlb_vmemmap code readability 2022-08-08 18:06:43 -07:00
hwpoison-inject.c mm/hwpoison: add __init/__exit annotations to module init/exit funcs 2022-10-03 14:03:05 -07:00
init-mm.c mm: remove rb tree. 2022-09-26 19:46:16 -07:00
internal.h mm: unconditionally close VMAs on error 2024-11-22 15:37:34 +01:00
interval_tree.c mm/interval_tree: add comments to improve code readability 2021-04-30 11:20:38 -07:00
io-mapping.c mm: add a io_mapping_map_user helper 2021-04-30 11:20:39 -07:00
ioremap.c mm: ioremap: Add ioremap/iounmap_allowed() 2022-06-27 12:22:31 +01:00
Kconfig mm: z3fold: deprecate CONFIG_Z3FOLD 2024-10-17 15:22:05 +02:00
Kconfig.debug mm: page_table_check: Make it dependent on EXCLUSIVE_SYSTEM_RAM 2023-06-14 11:15:29 +02:00
khugepaged.c mm/khugepaged: fix the address passed to notifier on testing young 2025-09-19 16:29:57 +02:00
kmemleak.c mm/kmemleak: avoid deadlock by moving pr_warn() outside kmemleak_lock 2025-08-28 16:26:04 +02:00
ksm.c mm/ksm: fix race with VMA iteration and mm_struct teardown 2023-03-30 12:49:29 +02:00
list_lru.c mm: kmem: make mem_cgroup_from_obj() vmalloc()-safe 2022-06-16 19:48:31 -07:00
maccess.c mm: Fix copy_from_user_nofault(). 2023-06-28 11:12:17 +02:00
madvise.c mm: drop the assumption that VM_SHARED always implies writable 2025-08-28 16:26:12 +02:00
Makefile mm: memcontrol: drop dead CONFIG_MEMCG_SWAP config symbol 2022-10-03 14:03:36 -07:00
mapping_dirty_helpers.c mm: move tlb_flush_pending inline helpers to mm_inline.h 2022-01-15 16:30:27 +02:00
memblock.c x86/numa: Fix the address overlap check in numa_fill_memblks() 2024-03-01 13:26:36 +01:00
memcontrol.c memcg: always call cond_resched() after fn() 2025-06-04 14:40:21 +02:00
memfd.c mm: reinstate ability to map write-sealed memfd mappings read-only 2025-08-28 16:26:12 +02:00
memory-failure.c mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory 2025-09-19 16:29:57 +02:00
memory-tiers.c memory tier: release the new_memtier in find_create_memory_tier() 2023-03-10 09:34:27 +01:00
memory.c mm: fix apply_to_existing_page_range() 2025-04-25 10:44:04 +02:00
memory_hotplug.c hwpoison, memory_hotplug: lock folio before unmap hwpoisoned folio 2025-05-22 14:10:09 +02:00
mempolicy.c mm/numa_balancing: teach mpol_to_str about the balancing mode 2024-08-03 08:49:40 +02:00
mempool.c mm/mempool: use might_alloc() 2022-06-16 19:48:30 -07:00
memremap.c mm/memremap.c: map FS_DAX device memory as decrypted 2022-11-08 15:57:23 -08:00
memtest.c memtest: use {READ,WRITE}_ONCE in memory scanning 2024-04-03 15:19:36 +02:00
migrate.c mm/vmscan: fix a bug calling wakeup_kswapd() with a wrong zone index 2025-05-22 14:10:08 +02:00
migrate_device.c mm/migrate_device: don't add folio to be freed to LRU in migrate_device_finalize() 2025-10-02 13:40:41 +02:00
mincore.c mm: teach mincore_hugetlb about pte markers 2023-03-22 13:34:03 +01:00
mlock.c mm: folio_may_be_lru_cached() unless folio_test_large() 2025-10-02 13:40:37 +02:00
mm_init.c mm: multi-gen LRU: groundwork 2022-09-26 19:46:09 -07:00
mm_slot.h mm: introduce common struct mm_slot 2022-10-03 14:02:43 -07:00
mmap.c mm: reinstate ability to map write-sealed memfd mappings read-only 2025-08-28 16:26:12 +02:00
mmap_lock.c mm: mmap_lock: replace get_memcg_path_buf() with on-stack buffer 2024-08-03 08:49:30 +02:00
mmu_gather.c mm/khugepaged: fix GUP-fast interaction by sending IPI 2022-11-30 14:49:42 -08:00
mmu_notifier.c mm/mmu_notifier.c: fix race in mmu_interval_notifier_remove() 2022-04-21 20:01:10 -07:00
mmzone.c mm: multi-gen LRU: groundwork 2022-09-26 19:46:09 -07:00
mprotect.c mm/uffd: fix warning without PTE_MARKER_UFFD_WP compiled in 2022-10-12 15:56:46 -07:00
mremap.c mm, mremap: fix mremap() expanding for vma's with vm_ops->close() 2023-02-09 11:28:22 +01:00
msync.c mm/msync: use vma_find() instead of vma linked list 2022-09-26 19:46:25 -07:00
nommu.c mm: add nommu variant of vm_insert_pages() 2025-03-28 21:58:53 +01:00
oom_kill.c memcg: fix soft lockup in the OOM process 2025-03-07 16:56:29 +01:00
page-writeback.c mm: fix ratelimit_pages update error in dirty_ratio_handler() 2025-06-27 11:07:30 +01:00
page_alloc.c mm/page_alloc: only set ALLOC_HIGHATOMIC for __GPF_HIGH allocations 2025-10-19 16:23:18 +02:00
page_counter.c mm: page_counter: remove unneeded atomic ops for low/min 2022-09-11 20:26:01 -07:00
page_ext.c mm/page_exit: fix kernel doc warning in page_ext_put() 2022-11-22 18:50:41 -08:00
page_idle.c mm: don't be stuck to rmap lock on reclaim path 2022-05-19 14:08:54 -07:00
page_io.c use less confusing names for iov_iter direction initializers 2023-02-09 11:28:04 +01:00
page_isolation.c mm/page_isolation: fix clang deadcode warning 2022-10-28 13:37:22 -07:00
page_owner.c mm: reuse pageblock_start/end_pfn() macro 2022-10-03 14:03:03 -07:00
page_poison.c mm: page_poison: print page info when corruption is caught 2021-04-30 11:20:36 -07:00
page_reporting.c mm/page_reporting: allow driver to specify reporting order 2021-06-29 10:53:47 -07:00
page_reporting.h mm/page_reporting: export reporting order as module parameter 2021-06-29 10:53:47 -07:00
page_table_check.c mm/page_table_check: fix crash on ZONE_DEVICE 2024-06-27 13:46:22 +02:00
page_vma_mapped.c mm/swap: add swp_offset_pfn() to fetch PFN from swap entry 2022-09-26 19:46:05 -07:00
pagewalk.c - Yu Zhao's Multi-Gen LRU patches are here. They've been under test in 2022-10-10 17:53:04 -07:00
percpu-internal.h percpu: improve percpu_alloc_percpu event trace 2022-05-13 07:20:18 -07:00
percpu-km.c percpu: flush tlb in pcpu_reclaim_populated() 2021-07-04 18:30:17 +00:00
percpu-stats.c mm: use vmalloc_array and vcalloc for array allocations 2022-03-08 09:30:46 -05:00
percpu-vm.c percpu: flush tlb in pcpu_reclaim_populated() 2021-07-04 18:30:17 +00:00
percpu.c mm: introduce and use {pgd,p4d}_populate_kernel() 2025-09-19 16:29:55 +02:00
pgalloc-track.h mm: fix typos in comments 2021-05-07 00:26:35 -07:00
pgtable-generic.c mm: fix race between __split_huge_pmd_locked() and GUP-fast 2024-06-16 13:41:38 +02:00
process_vm_access.c use less confusing names for iov_iter direction initializers 2023-02-09 11:28:04 +01:00
ptdump.c mm/ptdump: take the memory hotplug lock inside ptdump_walk_pgd() 2025-08-28 16:26:11 +02:00
readahead.c mm/readahead: fix large folio support in async readahead 2025-01-09 13:30:06 +01:00
rmap.c mm/rmap: reject hugetlb folios in folio_make_device_exclusive() 2025-04-25 10:43:42 +02:00
rodata_test.c mm/rodata_test: use PAGE_ALIGNED() helper 2022-10-03 14:03:05 -07:00
secretmem.c fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass 2025-07-17 18:32:10 +02:00
shmem.c mm: update memfd seal write check to include F_SEAL_WRITE 2025-08-28 16:26:12 +02:00
shrinker_debug.c mm: shrinkers: fix deadlock in shrinker debugfs 2023-02-22 12:59:46 +01:00
shuffle.c mm/shuffle: convert module_param_call to module_param_cb 2022-10-03 14:03:07 -07:00
shuffle.h mm/shuffle: fix section mismatch warning 2021-05-22 15:09:07 -10:00
slab.c mm/slab: Fix undefined init_cache_node_node() for NUMA and !SMP 2023-03-30 12:49:23 +02:00
slab.h - Yu Zhao's Multi-Gen LRU patches are here. They've been under test in 2022-10-10 17:53:04 -07:00
slab_common.c mm: krealloc: Fix MTE false alarm in __do_krealloc 2024-11-17 15:07:22 +01:00
slob.c Merge branch 'slab/for-6.1/kmalloc_size_roundup' into slab/for-next 2022-09-29 11:30:55 +02:00
slub.c mm: slub: avoid wake up kswapd in set_track_prepare 2025-09-09 18:54:24 +02:00
sparse-vmemmap.c mm: introduce and use {pgd,p4d}_populate_kernel() 2025-09-19 16:29:55 +02:00
sparse.c x86/kaslr: Expose and use the end of the physical memory address space 2024-09-12 11:10:17 +02:00
swap.c mm: folio_may_be_lru_cached() unless folio_test_large() 2025-10-02 13:40:37 +02:00
swap.h mm/swap: fix race when skipping swapcache 2024-03-01 13:26:32 +01:00
swap_cgroup.c mm: memcontrol: don't allocate cgroup swap arrays when memcg is disabled 2022-10-03 14:03:36 -07:00
swap_slots.c mm/swap: convert put_swap_page() to put_swap_folio() 2022-10-03 14:02:46 -07:00
swap_state.c swap_state: convert free_swap_cache() to use a folio 2022-10-03 14:02:51 -07:00
swapfile.c mm/swapfile: skip HugeTLB pages for unuse_vma 2024-10-22 15:56:43 +02:00
truncate.c mm: Fix missing folio invalidation calls during truncation 2024-09-04 13:25:00 +02:00
usercopy.c mm: Fix copy_from_user_nofault(). 2023-06-28 11:12:17 +02:00
userfaultfd.c userfaultfd: fix mmap_changing checking in mfill_atomic_hugetlb 2024-02-23 09:12:51 +01:00
util.c mm: unconditionally close VMAs on error 2024-11-22 15:37:34 +01:00
vmalloc.c mm/vmalloc: leave lazy MMU mode on PTE mapping error 2025-07-24 08:51:55 +02:00
vmpressure.c net-memcg: Fix scope of sockmem pressure indicators 2023-09-13 09:42:33 +02:00
vmscan.c mm: add missing release barrier on PGDAT_RECLAIM_LOCKED unlock 2025-04-25 10:43:42 +02:00
vmstat.c vmstat: call fold_vm_zone_numa_events() before show per zone NUMA event 2024-12-14 19:54:13 +01:00
workingset.c mm/mglru: fix underprotected page cache 2023-12-20 17:00:26 +01:00
z3fold.c mm: Convert all PageMovable users to movable_operations 2022-08-02 12:34:03 -04:00
zbud.c mm/zbud: add kerneldoc fields for zbud_pool 2021-07-01 11:06:03 -07:00
zpool.c zpool: remove the list of pools_head 2022-01-15 16:30:31 +02:00
zsmalloc.c minmax: make generic MIN() and MAX() macros available everywhere 2025-10-02 13:40:43 +02:00
zswap.c mm: zswap: fix missing folio cleanup in writeback race path 2024-03-01 13:26:39 +01:00