Messages in this thread | | | From | Muchun Song <> | Date | Sat, 10 Jul 2021 18:54:20 +0800 | Subject | Re: [External] [PATCH v3 1/3] mm, memcg: add mem_cgroup_disabled checks in vmpressure and swap-related functions |
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On Sat, Jul 10, 2021 at 8:36 AM Suren Baghdasaryan <surenb@google.com> wrote: > > Add mem_cgroup_disabled check in vmpressure, mem_cgroup_uncharge_swap and > cgroup_throttle_swaprate functions. This minimizes the memcg overhead in > the pagefault and exit_mmap paths when memcgs are disabled using > cgroup_disable=memory command-line option. > This change results in ~2.1% overhead reduction when running PFT test > comparing {CONFIG_MEMCG=n, CONFIG_MEMCG_SWAP=n} against {CONFIG_MEMCG=y, > CONFIG_MEMCG_SWAP=y, cgroup_disable=memory} configuration on an 8-core > ARM64 Android device. > > Signed-off-by: Suren Baghdasaryan <surenb@google.com> > Reviewed-by: Shakeel Butt <shakeelb@google.com> > Acked-by: Johannes Weiner <hannes@cmpxchg.org>
The changes are straightforward. LGTM. Reviewed-by: Muchun Song <songmuchun@bytedance.com>
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