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Sultan Alsawaf 1dca369959 mm: Don't hog the CPU and zone lock in rmqueue_bulk() 
There is noticeable scheduling latency and heavy zone lock contention
stemming from rmqueue_bulk's single hold of the zone lock while doing
its work, as seen with the preemptoff tracer. There's no actual need for
rmqueue_bulk() to hold the zone lock the entire time; it only does so
for supposed efficiency. As such, we can relax the zone lock and even
reschedule when IRQs are enabled in order to keep the scheduling delays
and zone lock contention at bay. Forward progress is still guaranteed,
as the zone lock can only be relaxed after page removal.

With this change, rmqueue_bulk() no longer appears as a serious offender
in the preemptoff tracer, and system latency is noticeably improved.

Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com>
2024-11-19 17:44:18 +01:00
..
damon Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
kasan Revert "kasan: print the original fault addr when access invalid shadow" 2024-11-18 11:06:01 +01:00
kfence Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sec_mm Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
backing-dev.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
balloon_compaction.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
cleancache.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
cma.c mm/cma: use nth_page() in place of direct struct page manipulation 2024-11-18 11:43:25 +01:00
cma.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
cma_debug.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
cma_sysfs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
compaction.c mm, vmscan: prevent infinite loop for costly GFP_NOIO | __GFP_RETRY_MAYFAIL allocations 2024-11-19 09:22:46 +01:00
debug.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
debug_page_ref.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
debug_vm_pgtable.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dmapool.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
early_ioremap.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fadvise.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
failslab.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
filemap.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
frame_vector.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
frontswap.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gup.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gup_benchmark.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
highmem.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hmm.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hpa.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
huge_memory.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hugetlb.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hugetlb_cgroup.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hwpoison-inject.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
init-mm.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
internal.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
interval_tree.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
io_record.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ioremap.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Kconfig zsmalloc: backport from 5994eabf3bbb 2024-11-19 17:44:14 +01:00
Kconfig.debug Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
khugepaged.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
kmemleak.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ksm.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
kzerod.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
list_lru.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
maccess.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
madvise.c Revert "fs: add file and path permissions helpers" 2024-11-19 13:30:21 +01:00
Makefile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mapping_dirty_helpers.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
memblock.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
memcontrol.c Revert "fs: add file and path permissions helpers" 2024-11-19 13:30:21 +01:00
memfd.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
memory-failure.c mm/memory-failure: fix an incorrect use of tail pages 2024-11-19 09:22:41 +01:00
memory.c x86/mm/pat: fix VM_PAT handling in COW mappings 2024-11-19 09:23:15 +01:00
memory_hotplug.c mm/memory_hotplug: use pfn math in place of direct struct page manipulation 2024-11-18 11:43:25 +01:00
mempolicy.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mempool.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
memremap.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
memtest.c memtest: use {READ,WRITE}_ONCE in memory scanning 2024-11-19 09:22:36 +01:00
migrate.c mm/migrate: set swap entry values of THP tail pages properly. 2024-11-19 09:22:41 +01:00
mincore.c Revert "fs: add file and path permissions helpers" 2024-11-19 13:30:21 +01:00
mlock.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mm_init.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mmap.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mmu_gather.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mmu_notifier.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mmzone.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mprotect.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mremap.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
msync.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nommu.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
oom_kill.c mm: oom_kill: Do not dump tasks by default 2024-11-19 17:33:46 +01:00
page-writeback.c kernel: sysctl: add init protection to common mm-related nodes 2024-11-19 17:39:17 +01:00
page_alloc.c mm: Don't hog the CPU and zone lock in rmqueue_bulk() 2024-11-19 17:44:18 +01:00
page_counter.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
page_ext.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
page_idle.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
page_io.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
page_isolation.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
page_owner.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
page_pinner.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
page_poison.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
page_reporting.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
page_reporting.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
page_vma_mapped.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pagewalk.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
percpu-internal.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
percpu-km.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
percpu-stats.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
percpu-vm.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
percpu.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pgalloc-track.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pgtable-generic.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
process_vm_access.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ptdump.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
readahead.c vfs: fix readahead(2) on block devices 2024-11-18 11:42:46 +01:00
rmap.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
rodata_test.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
shmem.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
shuffle.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
shuffle.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
slab.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
slab.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
slab_common.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
slob.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
slub.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sparse-vmemmap.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sparse.c mm/sparsemem: fix race in accessing memory_section->usage 2024-11-18 12:13:06 +01:00
swap.c mm: swap - set page_cluster at 0 2024-11-17 17:37:44 +01:00
swap_cgroup.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
swap_slots.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
swap_state.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
swapfile.c mm: swap: fix race between free_swap_and_cache() and swapoff() 2024-11-19 09:22:33 +01:00
truncate.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
usercopy.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
userfaultfd.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
util.c mm: vmalloc: introduce array allocation functions 2024-11-18 12:12:59 +01:00
vmacache.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
vmalloc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
vmpressure.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
vmscan.c mm: new writeback and swappiness values from Ktweak 2024-11-19 17:39:12 +01:00
vmstat.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
workingset.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
z3fold.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
zbud.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
zpool.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
zsmalloc.c zsmalloc: backport from 5994eabf3bbb 2024-11-19 17:44:14 +01:00
zswap.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00