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ANDROID: vendor_hooks: add hook for shmem memory stat

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Add some vendor hooks for shmem memory stats. This help us track the
number of shmem pages which are belong to the mapping we're interested
in. If shmem pages are swapped out, we can track that number, too.

Bug: 372282099

Change-Id: I0a18a690f37719400faa4a01b1d5d09e979f09c7
Signed-off-by: Jaewon Kim <jaewon31.kim@samsung.com>
This commit is contained in:
Jaewon Kim
2024-10-07 16:52:43 +09:00
committed by Treehugger Robot
parent b5fd1cdaf6
commit b235667f92
4 changed files with 14 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/android/vendor_hooks.c
+2
View File
@@ -289,6 +289,8 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_regmap_update);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_shmem_suitable_orders);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_shmem_allowable_huge_orders);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_shmem_get_folio);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_shmem_mod_shmem);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_shmem_mod_swapped);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_slab_folio_alloced);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_kmalloc_large_alloced);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_ctl_dirty_rate);
include/trace/hooks/mm.h
+6
View File
@@ -16,6 +16,12 @@ struct folio_batch;
DECLARE_RESTRICTED_HOOK(android_rvh_shmem_get_folio,
TP_PROTO(struct shmem_inode_info *info, struct folio **folio, int order),
TP_ARGS(info, folio, order), 3);
DECLARE_HOOK(android_vh_shmem_mod_shmem,
TP_PROTO(struct address_space *mapping, long nr_pages),
TP_ARGS(mapping, nr_pages));
DECLARE_HOOK(android_vh_shmem_mod_swapped,
TP_PROTO(struct address_space *mapping, long nr_pages),
TP_ARGS(mapping, nr_pages));
DECLARE_RESTRICTED_HOOK(android_rvh_try_alloc_pages_gfp,
TP_PROTO(struct page **page, unsigned int order,
gfp_t gfp, enum zone_type highest_zoneidx),
mm/filemap.c
+1
View File
@@ -211,6 +211,7 @@ static void filemap_unaccount_folio(struct address_space *mapping,
__lruvec_stat_mod_folio(folio, NR_FILE_PAGES, -nr);
if (folio_test_swapbacked(folio)) {
__lruvec_stat_mod_folio(folio, NR_SHMEM, -nr);
trace_android_vh_shmem_mod_shmem(folio->mapping, -nr);
if (folio_test_pmd_mappable(folio))
__lruvec_stat_mod_folio(folio, NR_SHMEM_THPS, -nr);
} else if (folio_test_pmd_mappable(folio)) {
mm/shmem.c
+5
View File
@@ -828,6 +828,7 @@ static int shmem_add_to_page_cache(struct folio *folio,
goto unlock;
shmem_update_stats(folio, nr);
mapping->nrpages += nr;
trace_android_vh_shmem_mod_shmem(folio->mapping, nr);
unlock:
xas_unlock_irq(&xas);
} while (xas_nomem(&xas, gfp));
@@ -852,6 +853,7 @@ static void shmem_delete_from_page_cache(struct folio *folio, void *radswap)
xa_lock_irq(&mapping->i_pages);
error = shmem_replace_entry(mapping, folio->index, folio, radswap);
trace_android_vh_shmem_mod_shmem(folio->mapping, -nr);
folio->mapping = NULL;
mapping->nrpages -= nr;
shmem_update_stats(folio, -nr);
@@ -1146,6 +1148,7 @@ whole_folios:
}
shmem_recalc_inode(inode, 0, -nr_swaps_freed);
trace_android_vh_shmem_mod_swapped(mapping, -nr_swaps_freed);
}
void shmem_truncate_range(struct inode *inode, loff_t lstart, loff_t lend)
@@ -1568,6 +1571,7 @@ try_split:
__GFP_HIGH | __GFP_NOMEMALLOC | __GFP_NOWARN,
NULL) == 0) {
shmem_recalc_inode(inode, 0, nr_pages);
trace_android_vh_shmem_mod_swapped(folio->mapping, nr_pages);
swap_shmem_alloc(swap, nr_pages);
shmem_delete_from_page_cache(folio, swp_to_radix_entry(swap));
@@ -2206,6 +2210,7 @@ static int shmem_swapin_folio(struct inode *inode, pgoff_t index,
goto failed;
shmem_recalc_inode(inode, 0, -nr_pages);
trace_android_vh_shmem_mod_swapped(folio->mapping, -nr_pages);
if (sgp == SGP_WRITE)
folio_mark_accessed(folio);