mirror of
https://github.com/nxp-imx/linux-imx.git
synced 2025-07-07 09:55:19 +02:00
BACKPORT: mm: add per-order mTHP split counters
Patch series "mm: introduce per-order mTHP split counters", v3.
At present, the split counters in THP statistics no longer include
PTE-mapped mTHP. Therefore, we want to introduce per-order mTHP split
counters to monitor the frequency of mTHP splits. This will assist
developers in better analyzing and optimizing system performance.
/sys/kernel/mm/transparent_hugepage/hugepages-<size>/stats
split
split_failed
split_deferred
This patch (of 2):
Currently, the split counters in THP statistics no longer include
PTE-mapped mTHP. Therefore, we propose introducing per-order mTHP split
counters to monitor the frequency of mTHP splits. This will help
developers better analyze and optimize system performance.
/sys/kernel/mm/transparent_hugepage/hugepages-<size>/stats
split
split_failed
split_deferred
[ioworker0@gmail.com: make things more readable, per Barry and Baolin]
Link: https://lkml.kernel.org/r/20240704012905.42971-2-ioworker0@gmail.com
[ioworker0@gmail.com: use == for `order' test, per David]
Link: https://lkml.kernel.org/r/20240705113119.82210-1-ioworker0@gmail.com
Link: https://lkml.kernel.org/r/20240704012905.42971-1-ioworker0@gmail.com
Link: https://lkml.kernel.org/r/20240704012905.42971-2-ioworker0@gmail.com
Link: https://lkml.kernel.org/r/20240628130750.73097-1-ioworker0@gmail.com
Link: https://lkml.kernel.org/r/20240628130750.73097-2-ioworker0@gmail.com
Signed-off-by: Mingzhe Yang <mingzhe.yang@ly.com>
Signed-off-by: Lance Yang <ioworker0@gmail.com>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Acked-by: Barry Song <baohua@kernel.org>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Bang Li <libang.li@antgroup.com>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit f216c845f3
)
[lichunpeng@xiaomi.com: fixed merge conflicts in split_huge_page_to_list_to_order()]
Bug: 359422098
Change-Id: Idb9beff5577e77105c4c6ed36b552307c0f408f9
Signed-off-by: chunpeng li <lichunpeng@xiaomi.com>
This commit is contained in:
parent
a1704797ee
commit
496306aa4d
|
@ -264,6 +264,9 @@ enum mthp_stat_item {
|
||||||
MTHP_STAT_ANON_FAULT_FALLBACK_CHARGE,
|
MTHP_STAT_ANON_FAULT_FALLBACK_CHARGE,
|
||||||
MTHP_STAT_SWPOUT,
|
MTHP_STAT_SWPOUT,
|
||||||
MTHP_STAT_SWPOUT_FALLBACK,
|
MTHP_STAT_SWPOUT_FALLBACK,
|
||||||
|
MTHP_STAT_SPLIT,
|
||||||
|
MTHP_STAT_SPLIT_FAILED,
|
||||||
|
MTHP_STAT_SPLIT_DEFERRED,
|
||||||
__MTHP_STAT_COUNT
|
__MTHP_STAT_COUNT
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|
|
@ -559,6 +559,9 @@ DEFINE_MTHP_STAT_ATTR(anon_fault_fallback, MTHP_STAT_ANON_FAULT_FALLBACK);
|
||||||
DEFINE_MTHP_STAT_ATTR(anon_fault_fallback_charge, MTHP_STAT_ANON_FAULT_FALLBACK_CHARGE);
|
DEFINE_MTHP_STAT_ATTR(anon_fault_fallback_charge, MTHP_STAT_ANON_FAULT_FALLBACK_CHARGE);
|
||||||
DEFINE_MTHP_STAT_ATTR(swpout, MTHP_STAT_SWPOUT);
|
DEFINE_MTHP_STAT_ATTR(swpout, MTHP_STAT_SWPOUT);
|
||||||
DEFINE_MTHP_STAT_ATTR(swpout_fallback, MTHP_STAT_SWPOUT_FALLBACK);
|
DEFINE_MTHP_STAT_ATTR(swpout_fallback, MTHP_STAT_SWPOUT_FALLBACK);
|
||||||
|
DEFINE_MTHP_STAT_ATTR(split, MTHP_STAT_SPLIT);
|
||||||
|
DEFINE_MTHP_STAT_ATTR(split_failed, MTHP_STAT_SPLIT_FAILED);
|
||||||
|
DEFINE_MTHP_STAT_ATTR(split_deferred, MTHP_STAT_SPLIT_DEFERRED);
|
||||||
|
|
||||||
static struct attribute *stats_attrs[] = {
|
static struct attribute *stats_attrs[] = {
|
||||||
&anon_fault_alloc_attr.attr,
|
&anon_fault_alloc_attr.attr,
|
||||||
|
@ -566,6 +569,9 @@ static struct attribute *stats_attrs[] = {
|
||||||
&anon_fault_fallback_charge_attr.attr,
|
&anon_fault_fallback_charge_attr.attr,
|
||||||
&swpout_attr.attr,
|
&swpout_attr.attr,
|
||||||
&swpout_fallback_attr.attr,
|
&swpout_fallback_attr.attr,
|
||||||
|
&split_attr.attr,
|
||||||
|
&split_failed_attr.attr,
|
||||||
|
&split_deferred_attr.attr,
|
||||||
NULL,
|
NULL,
|
||||||
};
|
};
|
||||||
|
|
||||||
|
@ -3365,6 +3371,8 @@ out:
|
||||||
}
|
}
|
||||||
|
|
||||||
count_vm_event(!ret ? THP_SPLIT_PAGE : THP_SPLIT_PAGE_FAILED);
|
count_vm_event(!ret ? THP_SPLIT_PAGE : THP_SPLIT_PAGE_FAILED);
|
||||||
|
count_mthp_stat(folio_order(folio),
|
||||||
|
!ret ? MTHP_STAT_SPLIT : MTHP_STAT_SPLIT_FAILED);
|
||||||
return ret;
|
return ret;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -3419,6 +3427,7 @@ void deferred_split_folio(struct folio *folio)
|
||||||
spin_lock_irqsave(&ds_queue->split_queue_lock, flags);
|
spin_lock_irqsave(&ds_queue->split_queue_lock, flags);
|
||||||
if (list_empty(&folio->_deferred_list)) {
|
if (list_empty(&folio->_deferred_list)) {
|
||||||
count_vm_event(THP_DEFERRED_SPLIT_PAGE);
|
count_vm_event(THP_DEFERRED_SPLIT_PAGE);
|
||||||
|
count_mthp_stat(folio_order(folio), MTHP_STAT_SPLIT_DEFERRED);
|
||||||
list_add_tail(&folio->_deferred_list, &ds_queue->split_queue);
|
list_add_tail(&folio->_deferred_list, &ds_queue->split_queue);
|
||||||
ds_queue->split_queue_len++;
|
ds_queue->split_queue_len++;
|
||||||
#ifdef CONFIG_MEMCG
|
#ifdef CONFIG_MEMCG
|
||||||
|
|
Loading…
Reference in New Issue
Block a user