From: Tim Chen <tim.c.chen@linux.intel.com> To: Michal Hocko <mhocko@suse.cz> Cc: Tim Chen <tim.c.chen@linux.intel.com>, Johannes Weiner <hannes@cmpxchg.org>, Andrew Morton <akpm@linux-foundation.org>, Dave Hansen <dave.hansen@intel.com>, Ying Huang <ying.huang@intel.com>, Dan Williams <dan.j.williams@intel.com>, David Rientjes <rientjes@google.com>, Shakeel Butt <shakeelb@google.com>, linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH v1 11/11] mm: Wakeup kswapd if toptier memory need soft reclaim Date: Mon, 5 Apr 2021 10:08:35 -0700 [thread overview] Message-ID: <9d6b4eff73aef26fff3ecfbfc0693b84309d8b4c.1617642418.git.tim.c.chen@linux.intel.com> (raw) In-Reply-To: <cover.1617642417.git.tim.c.chen@linux.intel.com> Detect during page allocation whether free toptier memory is low. If so, wake up kswapd to reclaim memory from those mem cgroups that have exceeded their limit. Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> --- include/linux/mmzone.h | 3 +++ mm/page_alloc.c | 2 ++ mm/vmscan.c | 2 +- 3 files changed, 6 insertions(+), 1 deletion(-) diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 789319dffe1c..3603948e95cc 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -886,6 +886,8 @@ bool zone_watermark_ok(struct zone *z, unsigned int order, unsigned int alloc_flags); bool zone_watermark_ok_safe(struct zone *z, unsigned int order, unsigned long mark, int highest_zoneidx); +bool pgdat_toptier_balanced(pg_data_t *pgdat, int order, int classzone_idx); + /* * Memory initialization context, use to differentiate memory added by * the platform statically or via memory hotplug interface. @@ -1466,5 +1468,6 @@ void sparse_init(void); #endif #endif /* !__GENERATING_BOUNDS.H */ + #endif /* !__ASSEMBLY__ */ #endif /* _LINUX_MMZONE_H */ diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 91212a837d8e..ca8aa789a967 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3519,6 +3519,8 @@ struct page *rmqueue(struct zone *preferred_zone, if (test_bit(ZONE_BOOSTED_WATERMARK, &zone->flags)) { clear_bit(ZONE_BOOSTED_WATERMARK, &zone->flags); wakeup_kswapd(zone, 0, 0, zone_idx(zone)); + } else if (!pgdat_toptier_balanced(zone->zone_pgdat, order, zone_idx(zone))) { + wakeup_kswapd(zone, 0, 0, zone_idx(zone)); } VM_BUG_ON_PAGE(page && bad_range(zone, page), page); diff --git a/mm/vmscan.c b/mm/vmscan.c index 270880c8baef..8fe709e3f5e4 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -3625,7 +3625,7 @@ static bool pgdat_balanced(pg_data_t *pgdat, int order, int highest_zoneidx) return false; } -static bool pgdat_toptier_balanced(pg_data_t *pgdat, int order, int classzone_idx) +bool pgdat_toptier_balanced(pg_data_t *pgdat, int order, int classzone_idx) { int i; unsigned long mark; -- 2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Tim Chen <tim.c.chen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> To: Michal Hocko <mhocko-AlSwsSmVLrQ@public.gmane.org> Cc: Tim Chen <tim.c.chen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>, Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>, Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>, Dave Hansen <dave.hansen-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>, Ying Huang <ying.huang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>, Dan Williams <dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>, David Rientjes <rientjes-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>, Shakeel Butt <shakeelb-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>, linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Subject: [RFC PATCH v1 11/11] mm: Wakeup kswapd if toptier memory need soft reclaim Date: Mon, 5 Apr 2021 10:08:35 -0700 [thread overview] Message-ID: <9d6b4eff73aef26fff3ecfbfc0693b84309d8b4c.1617642418.git.tim.c.chen@linux.intel.com> (raw) In-Reply-To: <cover.1617642417.git.tim.c.chen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> Detect during page allocation whether free toptier memory is low. If so, wake up kswapd to reclaim memory from those mem cgroups that have exceeded their limit. Signed-off-by: Tim Chen <tim.c.chen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> --- include/linux/mmzone.h | 3 +++ mm/page_alloc.c | 2 ++ mm/vmscan.c | 2 +- 3 files changed, 6 insertions(+), 1 deletion(-) diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 789319dffe1c..3603948e95cc 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -886,6 +886,8 @@ bool zone_watermark_ok(struct zone *z, unsigned int order, unsigned int alloc_flags); bool zone_watermark_ok_safe(struct zone *z, unsigned int order, unsigned long mark, int highest_zoneidx); +bool pgdat_toptier_balanced(pg_data_t *pgdat, int order, int classzone_idx); + /* * Memory initialization context, use to differentiate memory added by * the platform statically or via memory hotplug interface. @@ -1466,5 +1468,6 @@ void sparse_init(void); #endif #endif /* !__GENERATING_BOUNDS.H */ + #endif /* !__ASSEMBLY__ */ #endif /* _LINUX_MMZONE_H */ diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 91212a837d8e..ca8aa789a967 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3519,6 +3519,8 @@ struct page *rmqueue(struct zone *preferred_zone, if (test_bit(ZONE_BOOSTED_WATERMARK, &zone->flags)) { clear_bit(ZONE_BOOSTED_WATERMARK, &zone->flags); wakeup_kswapd(zone, 0, 0, zone_idx(zone)); + } else if (!pgdat_toptier_balanced(zone->zone_pgdat, order, zone_idx(zone))) { + wakeup_kswapd(zone, 0, 0, zone_idx(zone)); } VM_BUG_ON_PAGE(page && bad_range(zone, page), page); diff --git a/mm/vmscan.c b/mm/vmscan.c index 270880c8baef..8fe709e3f5e4 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -3625,7 +3625,7 @@ static bool pgdat_balanced(pg_data_t *pgdat, int order, int highest_zoneidx) return false; } -static bool pgdat_toptier_balanced(pg_data_t *pgdat, int order, int classzone_idx) +bool pgdat_toptier_balanced(pg_data_t *pgdat, int order, int classzone_idx) { int i; unsigned long mark; -- 2.20.1
next prev parent reply other threads:[~2021-04-05 18:09 UTC|newest] Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-05 17:08 [RFC PATCH v1 00/11] Manage the top tier memory in a tiered memory Tim Chen 2021-04-05 17:08 ` [RFC PATCH v1 01/11] mm: Define top tier memory node mask Tim Chen 2021-04-05 17:08 ` Tim Chen 2021-04-05 17:08 ` [RFC PATCH v1 02/11] mm: Add soft memory limit for mem cgroup Tim Chen 2021-04-05 17:08 ` Tim Chen 2021-04-05 17:08 ` [RFC PATCH v1 03/11] mm: Account the top tier memory usage per cgroup Tim Chen 2021-04-05 17:08 ` [RFC PATCH v1 04/11] mm: Report top tier memory usage in sysfs Tim Chen 2021-04-05 17:08 ` Tim Chen 2021-04-05 17:08 ` [RFC PATCH v1 05/11] mm: Add soft_limit_top_tier tree for mem cgroup Tim Chen 2021-04-05 17:08 ` Tim Chen 2021-04-05 17:08 ` [RFC PATCH v1 06/11] mm: Handle top tier memory in cgroup soft limit memory tree utilities Tim Chen 2021-04-05 17:08 ` Tim Chen 2021-04-05 17:08 ` [RFC PATCH v1 07/11] mm: Account the total top tier memory in use Tim Chen 2021-04-05 17:08 ` Tim Chen 2021-04-05 17:08 ` [RFC PATCH v1 08/11] mm: Add toptier option for mem_cgroup_soft_limit_reclaim() Tim Chen 2021-04-05 17:08 ` Tim Chen 2021-04-05 17:08 ` [RFC PATCH v1 09/11] mm: Use kswapd to demote pages when toptier memory is tight Tim Chen 2021-04-05 17:08 ` Tim Chen 2021-04-05 17:08 ` [RFC PATCH v1 10/11] mm: Set toptier_scale_factor via sysctl Tim Chen 2021-04-05 17:08 ` Tim Chen 2021-04-05 17:08 ` Tim Chen [this message] 2021-04-05 17:08 ` [RFC PATCH v1 11/11] mm: Wakeup kswapd if toptier memory need soft reclaim Tim Chen 2021-04-06 9:08 ` [RFC PATCH v1 00/11] Manage the top tier memory in a tiered memory Michal Hocko 2021-04-06 9:08 ` Michal Hocko 2021-04-07 22:33 ` Tim Chen 2021-04-07 22:33 ` Tim Chen 2021-04-08 11:52 ` Michal Hocko 2021-04-08 11:52 ` Michal Hocko 2021-04-09 23:26 ` Tim Chen 2021-04-09 23:26 ` Tim Chen 2021-04-12 19:20 ` Shakeel Butt 2021-04-12 19:20 ` Shakeel Butt 2021-04-12 19:20 ` Shakeel Butt 2021-04-14 8:59 ` Jonathan Cameron 2021-04-14 8:59 ` Jonathan Cameron 2021-04-15 0:42 ` Tim Chen 2021-04-15 0:42 ` Tim Chen 2021-04-13 2:15 ` Huang, Ying 2021-04-13 2:15 ` Huang, Ying 2021-04-13 2:15 ` Huang, Ying 2021-04-13 8:33 ` Michal Hocko 2021-04-13 8:33 ` Michal Hocko 2021-04-12 14:03 ` Shakeel Butt 2021-04-12 14:03 ` Shakeel Butt 2021-04-12 14:03 ` Shakeel Butt 2021-04-08 17:18 ` Shakeel Butt 2021-04-08 17:18 ` Shakeel Butt 2021-04-08 17:18 ` Shakeel Butt 2021-04-08 18:00 ` Yang Shi 2021-04-08 18:00 ` Yang Shi 2021-04-08 20:29 ` Shakeel Butt 2021-04-08 20:29 ` Shakeel Butt 2021-04-08 20:29 ` Shakeel Butt 2021-04-08 20:50 ` Yang Shi 2021-04-08 20:50 ` Yang Shi 2021-04-08 20:50 ` Yang Shi 2021-04-12 14:03 ` Shakeel Butt 2021-04-12 14:03 ` Shakeel Butt 2021-04-12 14:03 ` Shakeel Butt 2021-04-09 7:24 ` Michal Hocko 2021-04-09 7:24 ` Michal Hocko 2021-04-15 22:31 ` Tim Chen 2021-04-15 22:31 ` Tim Chen 2021-04-16 6:38 ` Michal Hocko 2021-04-16 6:38 ` Michal Hocko 2021-04-14 23:22 ` Tim Chen 2021-04-14 23:22 ` Tim Chen 2021-04-09 2:58 ` Huang, Ying 2021-04-09 2:58 ` Huang, Ying 2021-04-09 2:58 ` Huang, Ying 2021-04-09 20:50 ` Yang Shi 2021-04-09 20:50 ` Yang Shi 2021-04-09 20:50 ` Yang Shi 2021-04-15 22:25 ` Tim Chen 2021-04-15 22:25 ` Tim Chen
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