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Revert "ANDROID: vendor_hook: Add hook in __free_pages()"

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This reverts commit 01680ae117.

The hook android_vh_free_pages is not used by any vendor, so remove it
to help with merge issues with future LTS releases.

If this is needed by any real user, it can easily be reverted to add it
back and then the symbol should be added to the abi list at the same
time to prevent it from being removed again later.

Bug: 203756332
Bug: 234214858
Cc: Bing Han <bing.han@transsion.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I36d4bfb83e1605c6fd1f9ff8dcd39cdbcdef8760
This commit is contained in:
Greg Kroah-Hartman 2022-08-16 12:57:40 +02:00 committed by Treehugger Robot
parent 8d86846781
commit eb99e6d80e
3 changed files with 0 additions and 5 deletions
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1
drivers/android/vendor_hooks.c
View File

@ -446,7 +446,6 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_unuse_swap_page);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_init_swap_info_struct);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_si_swapinfo);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_alloc_si);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_free_pages);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_set_shmem_page_flag);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_pidfd_open);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mmput);

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

@ -254,9 +254,6 @@ DECLARE_HOOK(android_vh_si_swapinfo,
DECLARE_HOOK(android_vh_alloc_si,
TP_PROTO(struct swap_info_struct **p, bool *skip),
TP_ARGS(p, skip));
DECLARE_HOOK(android_vh_free_pages,
TP_PROTO(struct page *page, unsigned int order),
TP_ARGS(page, order));
DECLARE_HOOK(android_vh_set_shmem_page_flag,
TP_PROTO(struct page *page),
TP_ARGS(page));

1
mm/page_alloc.c
View File

@ -5183,7 +5183,6 @@ static inline void free_the_page(struct page *page, unsigned int order)
void __free_pages(struct page *page, unsigned int order)
{
trace_android_vh_free_pages(page, order);
if (put_page_testzero(page))
free_the_page(page, order);
else if (!PageHead(page))