From nobody Thu Dec 25 18:05:53 2025 Received: from invmail4.hynix.com (exvmail4.skhynix.com [166.125.252.92]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 6F45212C806; Mon, 26 Feb 2024 14:06:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=166.125.252.92 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708956388; cv=none; b=UxfT1S+XGWfbz333VuGVeNAns7fS9Sz30jHKyjWpQCPF+BBATMSL0A0x6f2wCy18BIP497MNWFUPTBgeyFf5g59ruZXQTP3xXTJ/Spl/tTdoXfp645QoG9r2/sMOy4HM+It+6RAIboOIGXMbknm2AAd4jR5O+wHzFTHfTyF6xw8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708956388; c=relaxed/simple; bh=NUk0r1jrb5I7n+/isN9uEsOAk3VhDiA1jU8BnjP6q5c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Q81FaF1r+8uHPUCTIHMXt8GTlaQWjNFyb+SJkpKD2yjd2MNF5/uTmKJlZ/gRy9nXOIav5iRRvYS/s2MICtxdnPIxNjSbu1XtPKLlAbQcU7WCo7gDgmMXkALXmO43o52ha5ofxscvpUR55BUMttmExXCPog9fC2QO3JvP3ZmcNDk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sk.com; spf=pass smtp.mailfrom=sk.com; arc=none smtp.client-ip=166.125.252.92 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sk.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sk.com X-AuditID: a67dfc5b-d6dff70000001748-8d-65dc9adceeac From: Honggyu Kim To: sj@kernel.org, damon@lists.linux.dev, linux-mm@kvack.org Cc: akpm@linux-foundation.org, apopple@nvidia.com, baolin.wang@linux.alibaba.com, dave.jiang@intel.com, honggyu.kim@sk.com, hyeongtak.ji@sk.com, kernel_team@skhynix.com, linmiaohe@huawei.com, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, lizhijian@cn.fujitsu.com, mathieu.desnoyers@efficios.com, mhiramat@kernel.org, rakie.kim@sk.com, rostedt@goodmis.org, surenb@google.com, yangx.jy@fujitsu.com, ying.huang@intel.com, ziy@nvidia.com, 42.hyeyoo@gmail.com Subject: [PATCH v2 6/7] mm/damon/sysfs-schemes: add target_nid on sysfs-schemes Date: Mon, 26 Feb 2024 23:05:52 +0900 Message-ID: <20240226140555.1615-7-honggyu.kim@sk.com> X-Mailer: git-send-email 2.43.0.windows.1 In-Reply-To: <20240226140555.1615-1-honggyu.kim@sk.com> References: <20240226140555.1615-1-honggyu.kim@sk.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrOIsWRmVeSWpSXmKPExsXC9ZZnoe6dWXdSDabtMrSY2GNgMWf9GjaL XTdCLP7vPcZo8eT/b1aLEzcb2Sw6vy9lsbi8aw6bxb01/1ktjqw/y2Kx7haQtfnsGWaLxcvV LPZ1PGCyOPz1DZPF5EsL2CxeTDnDaHFy1mQWi9lH77E7CHv8PziJ2WPp6TdsHhuagMTOWXfZ PVr23WL3WLCp1KPlyFtWj8V7XjJ5bFrVyeax6dMkdo8TM36zeOx8aOnxYvNMRo/e5ndsHp83 yQXwR3HZpKTmZJalFunbJXBlXF0wnb3gulXFxwm32RsYlxp0MXJySAiYSBx/+4cFxr59dQcT iM0moCZx5eUkIJuDQ0TAQWLVV4UuRi4OZoEGFokfny+B1QsL+EscnrCcGaSGRUBVom2dEkiY V8BMouvfL0aIkZoSj7f/ZAexOQXMJf4fbmcDKRcCqjl6mxmiXFDi5MwnYBOZBeQlmrfOZgZZ JSFwjF3ie+dLqNMkJQ6uuMEygZF/FpKeWUh6FjAyrWIUyswry03MzDHRy6jMy6zQS87P3cQI jL5ltX+idzB+uhB8iFGAg1GJh9eh9k6qEGtiWXFl7iFGCQ5mJRHecJmbqUK8KYmVValF+fFF pTmpxYcYpTlYlMR5jb6VpwgJpCeWpGanphakFsFkmTg4pRoYQwSEvGbm/NZbP69KaPn8qaoV pU+Tf2QwKiztbJASzsrYlX5OUXf20QNbH7xc7zPpZcaeLdHGvB2nAqbpP+XPOchaqxLnq7bA 8PW+ythV5ncnrV5x8l/J6/0ORQfTP/mZTX3B8km+vNjqX810r3+Ovv9Dti0ve9K+v+CLynrn WO/sbrmp3Gu/KLEUZyQaajEXFScCANrcd+m6AgAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprLIsWRmVeSWpSXmKPExsXCNUNLT/fOrDupBr+/KFtM7DGwmLN+DZvF rhshFv/3HmO0ePL/N6vFiZuNbBafn71mtuh88p3R4vDck6wWnd+Xslhc3jWHzeLemv+sFkfW n2WxWHcLyNp89gyzxeLlahaHrj1ntdjX8YDJ4vDXN0wWky8tYLN4MeUMo8XJWZNZLGYfvcfu IO7x/+AkZo+lp9+weWxoAhI7Z91l92jZd4vdY8GmUo+WI29ZPRbvecnksWlVJ5vHpk+T2D1O zPjN4rHzoaXHi80zGT16m9+xeXy77eGx+MUHpgDBKC6blNSczLLUIn27BK6Mqwumsxdct6r4 OOE2ewPjUoMuRk4OCQETidtXdzCB2GwCahJXXk4Csjk4RAQcJFZ9Vehi5OJgFmhgkfjx+RIL SI2wgL/E4QnLmUFqWARUJdrWKYGEeQXMJLr+/WKEGKkp8Xj7T3YQm1PAXOL/4XY2kHIhoJqj t5khygUlTs58AjaRWUBeonnrbOYJjDyzkKRmIUktYGRaxSiSmVeWm5iZY6pXnJ1RmZdZoZec n7uJERhpy2r/TNzB+OWy+yFGAQ5GJR5eh9o7qUKsiWXFlbmHGCU4mJVEeMNlbqYK8aYkVlal FuXHF5XmpBYfYpTmYFES5/UKT00QEkhPLEnNTk0tSC2CyTJxcEo1MO7dPfsYU8OBR6rquvop 3mKHUifcvyzWssDszQmTtS7CwhFJe1pWvlKt8TB361ObJqC9aNf2ipjZ7hp1uTVrOPNMmzs1 //DzLbBZwFy39a+ClES9U2y8p5RK8X4p7utcq3bt3bygob3Mnq14SfQ+d/23H30nGm/bXXcu n6/TXrHmkl9XuO8lJZbijERDLeai4kQAbAwRP7ACAAA= X-CFilter-Loop: Reflected Content-Type: text/plain; charset="utf-8" From: Hyeongtak Ji This patch adds target_nid under /sys/kernel/mm/damon/admin/kdamonds//contexts//schemes/ target_nid can be used as the destination node for DAMOS actions such as DAMOS_DEMOTE or DAMOS_PROMOTE in the future. Signed-off-by: Hyeongtak Ji Signed-off-by: Honggyu Kim --- include/linux/damon.h | 11 ++++++++++- mm/damon/core.c | 5 ++++- mm/damon/dbgfs.c | 2 +- mm/damon/lru_sort.c | 3 ++- mm/damon/reclaim.c | 3 ++- mm/damon/sysfs-schemes.c | 37 ++++++++++++++++++++++++++++++++++++- 6 files changed, 55 insertions(+), 6 deletions(-) diff --git a/include/linux/damon.h b/include/linux/damon.h index d7e52d0228b4..4d270956dbd0 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -321,6 +321,7 @@ struct damos_access_pattern { * @apply_interval_us: The time between applying the @action. * @quota: Control the aggressiveness of this scheme. * @wmarks: Watermarks for automated (in)activation of this scheme. + * @target_nid: Destination node if @action is "promote" or "demote". * @filters: Additional set of &struct damos_filter for &action. * @stat: Statistics of this scheme. * @list: List head for siblings. @@ -336,6 +337,10 @@ struct damos_access_pattern { * monitoring context are inactive, DAMON stops monitoring either, and just * repeatedly checks the watermarks. * + * @target_nid is used to set the destination node for promote or demote + * actions, which means it's only meaningful when @action is either "promo= te" or + * "demote". + * * Before applying the &action to a memory region, &struct damon_operations * implementation could check pages of the region and skip &action to resp= ect * &filters @@ -357,6 +362,9 @@ struct damos { /* public: */ struct damos_quota quota; struct damos_watermarks wmarks; + union { + int target_nid; + }; struct list_head filters; struct damos_stat stat; struct list_head list; @@ -661,7 +669,8 @@ struct damos *damon_new_scheme(struct damos_access_patt= ern *pattern, enum damos_action action, unsigned long apply_interval_us, struct damos_quota *quota, - struct damos_watermarks *wmarks); + struct damos_watermarks *wmarks, + int target_nid); void damon_add_scheme(struct damon_ctx *ctx, struct damos *s); void damon_destroy_scheme(struct damos *s); =20 diff --git a/mm/damon/core.c b/mm/damon/core.c index 3a05e71509b9..0c2472818fb9 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -316,7 +316,8 @@ struct damos *damon_new_scheme(struct damos_access_patt= ern *pattern, enum damos_action action, unsigned long apply_interval_us, struct damos_quota *quota, - struct damos_watermarks *wmarks) + struct damos_watermarks *wmarks, + int target_nid) { struct damos *scheme; =20 @@ -341,6 +342,8 @@ struct damos *damon_new_scheme(struct damos_access_patt= ern *pattern, scheme->wmarks =3D *wmarks; scheme->wmarks.activated =3D true; =20 + scheme->target_nid =3D target_nid; + return scheme; } =20 diff --git a/mm/damon/dbgfs.c b/mm/damon/dbgfs.c index dc0ea1fc30ca..29b427dd1186 100644 --- a/mm/damon/dbgfs.c +++ b/mm/damon/dbgfs.c @@ -279,7 +279,7 @@ static struct damos **str_to_schemes(const char *str, s= size_t len, =20 pos +=3D parsed; scheme =3D damon_new_scheme(&pattern, action, 0, "a, - &wmarks); + &wmarks, NUMA_NO_NODE); if (!scheme) goto fail; =20 diff --git a/mm/damon/lru_sort.c b/mm/damon/lru_sort.c index f2e5f9431892..fd0492637fce 100644 --- a/mm/damon/lru_sort.c +++ b/mm/damon/lru_sort.c @@ -163,7 +163,8 @@ static struct damos *damon_lru_sort_new_scheme( /* under the quota. */ "a, /* (De)activate this according to the watermarks. */ - &damon_lru_sort_wmarks); + &damon_lru_sort_wmarks, + NUMA_NO_NODE); } =20 /* Create a DAMON-based operation scheme for hot memory regions */ diff --git a/mm/damon/reclaim.c b/mm/damon/reclaim.c index ab974e477d2f..973ac5df84eb 100644 --- a/mm/damon/reclaim.c +++ b/mm/damon/reclaim.c @@ -147,7 +147,8 @@ static struct damos *damon_reclaim_new_scheme(void) /* under the quota. */ &damon_reclaim_quota, /* (De)activate this according to the watermarks. */ - &damon_reclaim_wmarks); + &damon_reclaim_wmarks, + NUMA_NO_NODE); } =20 static int damon_reclaim_apply_parameters(void) diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c index 9bc48932eb6c..8bf5aa98d916 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -6,6 +6,7 @@ */ =20 #include +#include =20 #include "sysfs-common.h" =20 @@ -1175,6 +1176,7 @@ struct damon_sysfs_scheme { struct damon_sysfs_scheme_filters *filters; struct damon_sysfs_stats *stats; struct damon_sysfs_scheme_regions *tried_regions; + int target_nid; }; =20 /* This should match with enum damos_action */ @@ -1202,6 +1204,7 @@ static struct damon_sysfs_scheme *damon_sysfs_scheme_= alloc( scheme->kobj =3D (struct kobject){}; scheme->action =3D action; scheme->apply_interval_us =3D apply_interval_us; + scheme->target_nid =3D NUMA_NO_NODE; return scheme; } =20 @@ -1424,6 +1427,32 @@ static ssize_t apply_interval_us_store(struct kobjec= t *kobj, return err ? err : count; } =20 +static ssize_t target_nid_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + struct damon_sysfs_scheme *scheme =3D container_of(kobj, + struct damon_sysfs_scheme, kobj); + + return sysfs_emit(buf, "%d\n", scheme->target_nid); +} + +static ssize_t target_nid_store(struct kobject *kobj, + struct kobj_attribute *attr, const char *buf, size_t count) +{ + struct damon_sysfs_scheme *scheme =3D container_of(kobj, + struct damon_sysfs_scheme, kobj); + int err =3D 0; + + if (scheme->action !=3D DAMOS_DEMOTE && + scheme->action !=3D DAMOS_PROMOTE) + return -EINVAL; + + /* TODO: error handling for target_nid range. */ + err =3D kstrtoint(buf, 0, &scheme->target_nid); + + return err ? err : count; +} + static void damon_sysfs_scheme_release(struct kobject *kobj) { kfree(container_of(kobj, struct damon_sysfs_scheme, kobj)); @@ -1435,9 +1464,13 @@ static struct kobj_attribute damon_sysfs_scheme_acti= on_attr =3D static struct kobj_attribute damon_sysfs_scheme_apply_interval_us_attr =3D __ATTR_RW_MODE(apply_interval_us, 0600); =20 +static struct kobj_attribute damon_sysfs_scheme_target_nid_attr =3D + __ATTR_RW_MODE(target_nid, 0600); + static struct attribute *damon_sysfs_scheme_attrs[] =3D { &damon_sysfs_scheme_action_attr.attr, &damon_sysfs_scheme_apply_interval_us_attr.attr, + &damon_sysfs_scheme_target_nid_attr.attr, NULL, }; ATTRIBUTE_GROUPS(damon_sysfs_scheme); @@ -1690,7 +1723,8 @@ static struct damos *damon_sysfs_mk_scheme( }; =20 scheme =3D damon_new_scheme(&pattern, sysfs_scheme->action, - sysfs_scheme->apply_interval_us, "a, &wmarks); + sysfs_scheme->apply_interval_us, "a, &wmarks, + sysfs_scheme->target_nid); if (!scheme) return NULL; =20 @@ -1721,6 +1755,7 @@ static void damon_sysfs_update_scheme(struct damos *s= cheme, =20 scheme->action =3D sysfs_scheme->action; scheme->apply_interval_us =3D sysfs_scheme->apply_interval_us; + scheme->target_nid =3D sysfs_scheme->target_nid; =20 scheme->quota.ms =3D sysfs_quotas->ms; scheme->quota.sz =3D sysfs_quotas->sz; --=20 2.34.1