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__memcg_memory_event() has been unnecessarily marked inline even when it is not really performance critical. It is usually called to track extreme conditions. Over the time, it has evolved to include more functionality and inlining it is causing more harm. Before the patch: $ size mm/memcontrol.o net/ipv4/tcp_input.o net/ipv4/tcp_output.o text data bss dec hex filename 35645 10574 4192 50411 c4eb mm/memcontrol.o 54738 1658 0 56396 dc4c net/ipv4/tcp_input.o 34644 1065 0 35709 8b7d net/ipv4/tcp_output.o After the patch: $ size mm/memcontrol.o net/ipv4/tcp_input.o net/ipv4/tcp_output.o text data bss dec hex filename 35137 10446 4192 49775 c26f mm/memcontrol.o 54322 1562 0 55884 da4c net/ipv4/tcp_input.o 34492 1017 0 35509 8ab5 net/ipv4/tcp_output.o [akpm@linux-foundation.org: use EXPORT_SYMBOL_GPL for __memcg_memory_event, per Michal and Christoph] Link: https://lkml.kernel.org/r/20251021234425.1885471-1-shakeel.butt@linux.dev Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev> Acked-by: SeongJae Park <sj@kernel.org> Acked-by: Roman Gushchin <roman.gushchin@linux.dev> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Muchun Song <muchun.song@linux.dev> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.