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f77bd4b14c
Patch series "mm: memcg: page counters optimizations", v3. This patchset contains 3 independent small optimizations of page counters. This patch (of 3): Memory protection (min/low) requires a constant tracking of protected memory usage. propagate_protected_usage() is called on each page counters update and does a number of operations even in cases when the actual memory protection functionality is not supported (e.g. hugetlb cgroups or memcg swap counters). It's obviously inefficient and leads to a waste of CPU cycles. It can be addressed by calling propagate_protected_usage() only for the counters which do support memory guarantees. As of now it's only memcg->memory - the unified memory memcg counter. Link: https://lkml.kernel.org/r/20240726203110.1577216-2-roman.gushchin@linux.dev Signed-off-by: Roman Gushchin <roman.gushchin@linux.dev> Acked-by: Shakeel Butt <shakeel.butt@linux.dev> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Muchun Song <songmuchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
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| .editorconfig | ||
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| COPYING | ||
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| README | ||
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.