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ANDROID: vendor_hooks: Add hooks to for free_unref_page_commit

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Provide a vendor hook to skip cma-pages to add in pcplist when
free_unref_page_commit.

The patch is revelant to skip drain_all_pages in alloc_contig_range,
the revelant hooks is android_vh_cma_drain_all_pages_bypass
which is to avoid to delay in drain pcppages when drain_all_pages.

In most case, pcp->high is small so that free-pages with other mt_types
can also fill with pcplist full.

Bug: 224732340
Signed-off-by: Peifeng Li <lipeifeng@oppo.com>
Change-Id: Ifdeeed9f8934d87671ec3fa6787a02675b993082
This commit is contained in:
Peifeng Li
2022-03-26 20:43:40 +08:00
committed by Suren Baghdasaryan
parent a2485b8abd
commit cb7c1a4c78
3 changed files with 9 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/android/vendor_hooks.c
View File

@@ -294,6 +294,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_shrink_slab_bypass);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_page_referenced_check_bypass);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_drain_all_pages_bypass);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cma_drain_all_pages_bypass);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_pcplist_add_cma_pages_bypass);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_psi_event);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_psi_group);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_cpuset_fork);

3
include/trace/hooks/mm.h
View File

@@ -125,6 +125,9 @@ DECLARE_HOOK(android_vh_drain_all_pages_bypass,
DECLARE_HOOK(android_vh_cma_drain_all_pages_bypass,
TP_PROTO(unsigned int migratetype, bool *bypass),
TP_ARGS(migratetype, bypass));
DECLARE_HOOK(android_vh_pcplist_add_cma_pages_bypass,
TP_PROTO(int migratetype, bool *bypass),
TP_ARGS(migratetype, bypass));
struct device;
DECLARE_HOOK(android_vh_subpage_dma_contig_alloc,
TP_PROTO(bool *allow_subpage_alloc, struct device *dev, size_t *size),

6
mm/page_alloc.c
View File

@@ -3301,6 +3301,7 @@ static void free_unref_page_commit(struct page *page, unsigned long pfn)
struct zone *zone = page_zone(page);
struct per_cpu_pages *pcp;
int migratetype;
bool pcp_skip_cma_pages = false;
migratetype = get_pcppage_migratetype(page);
__count_vm_event(PGFREE);
@@ -3313,7 +3314,10 @@ static void free_unref_page_commit(struct page *page, unsigned long pfn)
* excessively into the page allocator
*/
if (migratetype >= MIGRATE_PCPTYPES) {
if (unlikely(is_migrate_isolate(migratetype))) {
trace_android_vh_pcplist_add_cma_pages_bypass(migratetype,
&pcp_skip_cma_pages);
if (unlikely(is_migrate_isolate(migratetype)) ||
pcp_skip_cma_pages) {
free_one_page(zone, page, pfn, 0, migratetype,
FPI_NONE);
return;