From: Suren Baghdasaryan <surenb@google.com> To: tj@kernel.org Cc: hannes@cmpxchg.org, mhocko@kernel.org, vdavydov.dev@gmail.com, akpm@linux-foundation.org, shakeelb@google.com, guro@fb.com, songmuchun@bytedance.com, shy828301@gmail.com, alexs@kernel.org, richard.weiyang@gmail.com, vbabka@suse.cz, axboe@kernel.dk, iamjoonsoo.kim@lge.com, david@redhat.com, willy@infradead.org, apopple@nvidia.com, minchan@kernel.org, linmiaohe@huawei.com, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-mm@kvack.org, kernel-team@android.com, surenb@google.com Subject: [PATCH v3 3/3] mm, memcg: inline swap-related functions to improve disabled memcg config Date: Fri, 9 Jul 2021 17:36:26 -0700 [thread overview] Message-ID: <20210710003626.3549282-3-surenb@google.com> (raw) In-Reply-To: <20210710003626.3549282-1-surenb@google.com> Inline mem_cgroup_try_charge_swap, mem_cgroup_uncharge_swap and cgroup_throttle_swaprate functions to perform mem_cgroup_disabled static key check inline before calling the main body of the function. 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 ~1% overhead reduction when running PFT test comparing {CONFIG_MEMCG=n} against {CONFIG_MEMCG=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> --- include/linux/swap.h | 26 +++++++++++++++++++++++--- mm/memcontrol.c | 14 ++++---------- mm/swapfile.c | 5 +---- 3 files changed, 28 insertions(+), 17 deletions(-) diff --git a/include/linux/swap.h b/include/linux/swap.h index 6f5a43251593..f30d26b0f71d 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -721,7 +721,13 @@ static inline int mem_cgroup_swappiness(struct mem_cgroup *mem) #endif #if defined(CONFIG_SWAP) && defined(CONFIG_MEMCG) && defined(CONFIG_BLK_CGROUP) -extern void cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask); +extern void __cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask); +static inline void cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask) +{ + if (mem_cgroup_disabled()) + return; + __cgroup_throttle_swaprate(page, gfp_mask); +} #else static inline void cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask) { @@ -730,8 +736,22 @@ static inline void cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask) #ifdef CONFIG_MEMCG_SWAP extern void mem_cgroup_swapout(struct page *page, swp_entry_t entry); -extern int mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry); -extern void mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_pages); +extern int __mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry); +static inline int mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry) +{ + if (mem_cgroup_disabled()) + return 0; + return __mem_cgroup_try_charge_swap(page, entry); +} + +extern void __mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_pages); +static inline void mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_pages) +{ + if (mem_cgroup_disabled()) + return; + __mem_cgroup_uncharge_swap(entry, nr_pages); +} + extern long mem_cgroup_get_nr_swap_pages(struct mem_cgroup *memcg); extern bool mem_cgroup_swap_full(struct page *page); #else diff --git a/mm/memcontrol.c b/mm/memcontrol.c index cdaf7003b43d..0b05322836ec 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -7234,7 +7234,7 @@ void mem_cgroup_swapout(struct page *page, swp_entry_t entry) } /** - * mem_cgroup_try_charge_swap - try charging swap space for a page + * __mem_cgroup_try_charge_swap - try charging swap space for a page * @page: page being added to swap * @entry: swap entry to charge * @@ -7242,16 +7242,13 @@ void mem_cgroup_swapout(struct page *page, swp_entry_t entry) * * Returns 0 on success, -ENOMEM on failure. */ -int mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry) +int __mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry) { unsigned int nr_pages = thp_nr_pages(page); struct page_counter *counter; struct mem_cgroup *memcg; unsigned short oldid; - if (mem_cgroup_disabled()) - return 0; - if (!cgroup_subsys_on_dfl(memory_cgrp_subsys)) return 0; @@ -7287,18 +7284,15 @@ int mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry) } /** - * mem_cgroup_uncharge_swap - uncharge swap space + * __mem_cgroup_uncharge_swap - uncharge swap space * @entry: swap entry to uncharge * @nr_pages: the amount of swap space to uncharge */ -void mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_pages) +void __mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_pages) { struct mem_cgroup *memcg; unsigned short id; - if (mem_cgroup_disabled()) - return; - id = swap_cgroup_record(entry, 0, nr_pages); rcu_read_lock(); memcg = mem_cgroup_from_id(id); diff --git a/mm/swapfile.c b/mm/swapfile.c index 707fa0481bb4..04a0c83f1313 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -3773,14 +3773,11 @@ static void free_swap_count_continuations(struct swap_info_struct *si) } #if defined(CONFIG_MEMCG) && defined(CONFIG_BLK_CGROUP) -void cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask) +void __cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask) { struct swap_info_struct *si, *next; int nid = page_to_nid(page); - if (mem_cgroup_disabled()) - return; - if (!(gfp_mask & __GFP_IO)) return; -- 2.32.0.93.g670b81a890-goog
WARNING: multiple messages have this Message-ID (diff)
From: Suren Baghdasaryan <surenb-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org> To: tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org Cc: hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org, mhocko-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, vdavydov.dev-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org, shakeelb-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org, guro-b10kYP2dOMg@public.gmane.org, songmuchun-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org, shy828301-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, alexs-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, richard.weiyang-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, vbabka-AlSwsSmVLrQ@public.gmane.org, axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org, iamjoonsoo.kim-Hm3cg6mZ9cc@public.gmane.org, david-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, willy-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org, apopple-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, minchan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, linmiaohe-hv44wF8Li93QT0dZR+AlfA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, kernel-team-z5hGa2qSFaRBDgjK7y7TUQ@public.gmane.org, surenb-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org Subject: [PATCH v3 3/3] mm, memcg: inline swap-related functions to improve disabled memcg config Date: Fri, 9 Jul 2021 17:36:26 -0700 [thread overview] Message-ID: <20210710003626.3549282-3-surenb@google.com> (raw) In-Reply-To: <20210710003626.3549282-1-surenb-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org> Inline mem_cgroup_try_charge_swap, mem_cgroup_uncharge_swap and cgroup_throttle_swaprate functions to perform mem_cgroup_disabled static key check inline before calling the main body of the function. 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 ~1% overhead reduction when running PFT test comparing {CONFIG_MEMCG=n} against {CONFIG_MEMCG=y, cgroup_disable=memory} configuration on an 8-core ARM64 Android device. Signed-off-by: Suren Baghdasaryan <surenb-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org> Reviewed-by: Shakeel Butt <shakeelb-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org> Acked-by: Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org> --- include/linux/swap.h | 26 +++++++++++++++++++++++--- mm/memcontrol.c | 14 ++++---------- mm/swapfile.c | 5 +---- 3 files changed, 28 insertions(+), 17 deletions(-) diff --git a/include/linux/swap.h b/include/linux/swap.h index 6f5a43251593..f30d26b0f71d 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -721,7 +721,13 @@ static inline int mem_cgroup_swappiness(struct mem_cgroup *mem) #endif #if defined(CONFIG_SWAP) && defined(CONFIG_MEMCG) && defined(CONFIG_BLK_CGROUP) -extern void cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask); +extern void __cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask); +static inline void cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask) +{ + if (mem_cgroup_disabled()) + return; + __cgroup_throttle_swaprate(page, gfp_mask); +} #else static inline void cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask) { @@ -730,8 +736,22 @@ static inline void cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask) #ifdef CONFIG_MEMCG_SWAP extern void mem_cgroup_swapout(struct page *page, swp_entry_t entry); -extern int mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry); -extern void mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_pages); +extern int __mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry); +static inline int mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry) +{ + if (mem_cgroup_disabled()) + return 0; + return __mem_cgroup_try_charge_swap(page, entry); +} + +extern void __mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_pages); +static inline void mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_pages) +{ + if (mem_cgroup_disabled()) + return; + __mem_cgroup_uncharge_swap(entry, nr_pages); +} + extern long mem_cgroup_get_nr_swap_pages(struct mem_cgroup *memcg); extern bool mem_cgroup_swap_full(struct page *page); #else diff --git a/mm/memcontrol.c b/mm/memcontrol.c index cdaf7003b43d..0b05322836ec 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -7234,7 +7234,7 @@ void mem_cgroup_swapout(struct page *page, swp_entry_t entry) } /** - * mem_cgroup_try_charge_swap - try charging swap space for a page + * __mem_cgroup_try_charge_swap - try charging swap space for a page * @page: page being added to swap * @entry: swap entry to charge * @@ -7242,16 +7242,13 @@ void mem_cgroup_swapout(struct page *page, swp_entry_t entry) * * Returns 0 on success, -ENOMEM on failure. */ -int mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry) +int __mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry) { unsigned int nr_pages = thp_nr_pages(page); struct page_counter *counter; struct mem_cgroup *memcg; unsigned short oldid; - if (mem_cgroup_disabled()) - return 0; - if (!cgroup_subsys_on_dfl(memory_cgrp_subsys)) return 0; @@ -7287,18 +7284,15 @@ int mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry) } /** - * mem_cgroup_uncharge_swap - uncharge swap space + * __mem_cgroup_uncharge_swap - uncharge swap space * @entry: swap entry to uncharge * @nr_pages: the amount of swap space to uncharge */ -void mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_pages) +void __mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_pages) { struct mem_cgroup *memcg; unsigned short id; - if (mem_cgroup_disabled()) - return; - id = swap_cgroup_record(entry, 0, nr_pages); rcu_read_lock(); memcg = mem_cgroup_from_id(id); diff --git a/mm/swapfile.c b/mm/swapfile.c index 707fa0481bb4..04a0c83f1313 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -3773,14 +3773,11 @@ static void free_swap_count_continuations(struct swap_info_struct *si) } #if defined(CONFIG_MEMCG) && defined(CONFIG_BLK_CGROUP) -void cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask) +void __cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask) { struct swap_info_struct *si, *next; int nid = page_to_nid(page); - if (mem_cgroup_disabled()) - return; - if (!(gfp_mask & __GFP_IO)) return; -- 2.32.0.93.g670b81a890-goog
next prev parent reply other threads:[~2021-07-10 0:37 UTC|newest] Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-07-10 0:36 [PATCH v3 1/3] mm, memcg: add mem_cgroup_disabled checks in vmpressure and swap-related functions Suren Baghdasaryan 2021-07-10 0:36 ` Suren Baghdasaryan 2021-07-10 0:36 ` Suren Baghdasaryan 2021-07-10 0:36 ` [PATCH v3 2/3] mm, memcg: inline mem_cgroup_{charge/uncharge} to improve disabled memcg config Suren Baghdasaryan 2021-07-10 0:36 ` Suren Baghdasaryan 2021-07-10 11:08 ` [External] " Muchun Song 2021-07-10 11:08 ` Muchun Song 2021-07-10 11:08 ` Muchun Song 2021-07-13 1:12 ` Suren Baghdasaryan 2021-07-13 1:12 ` Suren Baghdasaryan 2021-07-13 1:12 ` Suren Baghdasaryan 2021-07-12 7:15 ` Michal Hocko 2021-07-12 7:15 ` Michal Hocko 2021-07-12 15:55 ` Suren Baghdasaryan 2021-07-12 15:55 ` Suren Baghdasaryan 2021-07-12 15:55 ` Suren Baghdasaryan 2021-07-18 16:55 ` Matthew Wilcox 2021-07-18 16:55 ` Matthew Wilcox 2021-07-18 21:25 ` Suren Baghdasaryan 2021-07-18 21:25 ` Suren Baghdasaryan 2021-07-18 21:25 ` Suren Baghdasaryan 2021-07-18 21:29 ` Matthew Wilcox 2021-07-18 21:29 ` Matthew Wilcox 2021-07-18 21:32 ` Suren Baghdasaryan 2021-07-18 21:32 ` Suren Baghdasaryan 2021-07-18 21:32 ` Suren Baghdasaryan 2021-07-10 0:36 ` Suren Baghdasaryan [this message] 2021-07-10 0:36 ` [PATCH v3 3/3] mm, memcg: inline swap-related functions " Suren Baghdasaryan 2021-07-10 0:36 ` Suren Baghdasaryan 2021-07-10 11:19 ` [External] " Muchun Song 2021-07-10 11:19 ` Muchun Song 2021-07-10 11:19 ` Muchun Song 2021-07-12 7:17 ` Michal Hocko 2021-07-12 7:17 ` Michal Hocko 2021-07-12 15:57 ` Suren Baghdasaryan 2021-07-12 15:57 ` Suren Baghdasaryan 2021-07-10 1:52 ` [PATCH v3 1/3] mm, memcg: add mem_cgroup_disabled checks in vmpressure and swap-related functions Miaohe Lin 2021-07-10 1:52 ` Miaohe Lin 2021-07-10 2:40 ` Suren Baghdasaryan 2021-07-10 2:40 ` Suren Baghdasaryan 2021-07-10 3:37 ` Miaohe Lin 2021-07-10 3:37 ` Miaohe Lin 2021-07-10 10:54 ` [External] " Muchun Song 2021-07-10 10:54 ` Muchun Song 2021-07-10 10:54 ` Muchun Song 2021-07-12 7:11 ` Michal Hocko 2021-07-12 7:11 ` Michal Hocko 2021-07-12 15:55 ` Suren Baghdasaryan 2021-07-12 15:55 ` Suren Baghdasaryan 2021-07-12 15:55 ` Suren Baghdasaryan
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20210710003626.3549282-3-surenb@google.com \ --to=surenb@google.com \ --cc=akpm@linux-foundation.org \ --cc=alexs@kernel.org \ --cc=apopple@nvidia.com \ --cc=axboe@kernel.dk \ --cc=cgroups@vger.kernel.org \ --cc=david@redhat.com \ --cc=guro@fb.com \ --cc=hannes@cmpxchg.org \ --cc=iamjoonsoo.kim@lge.com \ --cc=kernel-team@android.com \ --cc=linmiaohe@huawei.com \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-mm@kvack.org \ --cc=mhocko@kernel.org \ --cc=minchan@kernel.org \ --cc=richard.weiyang@gmail.com \ --cc=shakeelb@google.com \ --cc=shy828301@gmail.com \ --cc=songmuchun@bytedance.com \ --cc=tj@kernel.org \ --cc=vbabka@suse.cz \ --cc=vdavydov.dev@gmail.com \ --cc=willy@infradead.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.