diff options
Diffstat (limited to 'mm/damon')
| -rw-r--r-- | mm/damon/core.c | 338 | ||||
| -rw-r--r-- | mm/damon/dbgfs.c | 2 | ||||
| -rw-r--r-- | mm/damon/lru_sort.c | 56 | ||||
| -rw-r--r-- | mm/damon/paddr.c | 157 | ||||
| -rw-r--r-- | mm/damon/reclaim.c | 65 | ||||
| -rw-r--r-- | mm/damon/sysfs-common.h | 2 | ||||
| -rw-r--r-- | mm/damon/sysfs-schemes.c | 127 | ||||
| -rw-r--r-- | mm/damon/sysfs-test.h | 10 | ||||
| -rw-r--r-- | mm/damon/sysfs.c | 81 | ||||
| -rw-r--r-- | mm/damon/vaddr.c | 6 |
10 files changed, 625 insertions, 219 deletions
diff --git a/mm/damon/core.c b/mm/damon/core.c index e66823d6b10b..7a87628b76ab 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -354,7 +354,8 @@ struct damos *damon_new_scheme(struct damos_access_pattern *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; @@ -381,6 +382,8 @@ struct damos *damon_new_scheme(struct damos_access_pattern *pattern, scheme->wmarks = *wmarks; scheme->wmarks.activated = true; + scheme->target_nid = target_nid; + return scheme; } @@ -663,6 +666,339 @@ void damon_set_schemes(struct damon_ctx *ctx, struct damos **schemes, damon_add_scheme(ctx, schemes[i]); } +static struct damos_quota_goal *damos_nth_quota_goal( + int n, struct damos_quota *q) +{ + struct damos_quota_goal *goal; + int i = 0; + + damos_for_each_quota_goal(goal, q) { + if (i++ == n) + return goal; + } + return NULL; +} + +static void damos_commit_quota_goal( + struct damos_quota_goal *dst, struct damos_quota_goal *src) +{ + dst->metric = src->metric; + dst->target_value = src->target_value; + if (dst->metric == DAMOS_QUOTA_USER_INPUT) + dst->current_value = src->current_value; + /* keep last_psi_total as is, since it will be updated in next cycle */ +} + +/** + * damos_commit_quota_goals() - Commit DAMOS quota goals to another quota. + * @dst: The commit destination DAMOS quota. + * @src: The commit source DAMOS quota. + * + * Copies user-specified parameters for quota goals from @src to @dst. Users + * should use this function for quota goals-level parameters update of running + * DAMON contexts, instead of manual in-place updates. + * + * This function should be called from parameters-update safe context, like + * DAMON callbacks. + */ +int damos_commit_quota_goals(struct damos_quota *dst, struct damos_quota *src) +{ + struct damos_quota_goal *dst_goal, *next, *src_goal, *new_goal; + int i = 0, j = 0; + + damos_for_each_quota_goal_safe(dst_goal, next, dst) { + src_goal = damos_nth_quota_goal(i++, src); + if (src_goal) + damos_commit_quota_goal(dst_goal, src_goal); + else + damos_destroy_quota_goal(dst_goal); + } + damos_for_each_quota_goal_safe(src_goal, next, src) { + if (j++ < i) + continue; + new_goal = damos_new_quota_goal( + src_goal->metric, src_goal->target_value); + if (!new_goal) + return -ENOMEM; + damos_add_quota_goal(dst, new_goal); + } + return 0; +} + +static int damos_commit_quota(struct damos_quota *dst, struct damos_quota *src) +{ + int err; + + dst->reset_interval = src->reset_interval; + dst->ms = src->ms; + dst->sz = src->sz; + err = damos_commit_quota_goals(dst, src); + if (err) + return err; + dst->weight_sz = src->weight_sz; + dst->weight_nr_accesses = src->weight_nr_accesses; + dst->weight_age = src->weight_age; + return 0; +} + +static struct damos_filter *damos_nth_filter(int n, struct damos *s) +{ + struct damos_filter *filter; + int i = 0; + + damos_for_each_filter(filter, s) { + if (i++ == n) + return filter; + } + return NULL; +} + +static void damos_commit_filter_arg( + struct damos_filter *dst, struct damos_filter *src) +{ + switch (dst->type) { + case DAMOS_FILTER_TYPE_MEMCG: + dst->memcg_id = src->memcg_id; + break; + case DAMOS_FILTER_TYPE_ADDR: + dst->addr_range = src->addr_range; + break; + case DAMOS_FILTER_TYPE_TARGET: + dst->target_idx = src->target_idx; + break; + default: + break; + } +} + +static void damos_commit_filter( + struct damos_filter *dst, struct damos_filter *src) +{ + dst->type = src->type; + dst->matching = src->matching; + damos_commit_filter_arg(dst, src); +} + +static int damos_commit_filters(struct damos *dst, struct damos *src) +{ + struct damos_filter *dst_filter, *next, *src_filter, *new_filter; + int i = 0, j = 0; + + damos_for_each_filter_safe(dst_filter, next, dst) { + src_filter = damos_nth_filter(i++, src); + if (src_filter) + damos_commit_filter(dst_filter, src_filter); + else + damos_destroy_filter(dst_filter); + } + + damos_for_each_filter_safe(src_filter, next, src) { + if (j++ < i) + continue; + + new_filter = damos_new_filter( + src_filter->type, src_filter->matching); + if (!new_filter) + return -ENOMEM; + damos_commit_filter_arg(new_filter, src_filter); + damos_add_filter(dst, new_filter); + } + return 0; +} + +static struct damos *damon_nth_scheme(int n, struct damon_ctx *ctx) +{ + struct damos *s; + int i = 0; + + damon_for_each_scheme(s, ctx) { + if (i++ == n) + return s; + } + return NULL; +} + +static int damos_commit(struct damos *dst, struct damos *src) +{ + int err; + + dst->pattern = src->pattern; + dst->action = src->action; + dst->apply_interval_us = src->apply_interval_us; + + err = damos_commit_quota(&dst->quota, &src->quota); + if (err) + return err; + + dst->wmarks = src->wmarks; + + err = damos_commit_filters(dst, src); + return err; +} + +static int damon_commit_schemes(struct damon_ctx *dst, struct damon_ctx *src) +{ + struct damos *dst_scheme, *next, *src_scheme, *new_scheme; + int i = 0, j = 0, err; + + damon_for_each_scheme_safe(dst_scheme, next, dst) { + src_scheme = damon_nth_scheme(i++, src); + if (src_scheme) { + err = damos_commit(dst_scheme, src_scheme); + if (err) + return err; + } else { + damon_destroy_scheme(dst_scheme); + } + } + + damon_for_each_scheme_safe(src_scheme, next, src) { + if (j++ < i) + continue; + new_scheme = damon_new_scheme(&src_scheme->pattern, + src_scheme->action, + src_scheme->apply_interval_us, + &src_scheme->quota, &src_scheme->wmarks, + NUMA_NO_NODE); + if (!new_scheme) + return -ENOMEM; + damon_add_scheme(dst, new_scheme); + } + return 0; +} + +static struct damon_target *damon_nth_target(int n, struct damon_ctx *ctx) +{ + struct damon_target *t; + int i = 0; + + damon_for_each_target(t, ctx) { + if (i++ == n) + return t; + } + return NULL; +} + +/* + * The caller should ensure the regions of @src are + * 1. valid (end >= src) and + * 2. sorted by starting address. + * + * If @src has no region, @dst keeps current regions. + */ +static int damon_commit_target_regions( + struct damon_target *dst, struct damon_target *src) +{ + struct damon_region *src_region; + struct damon_addr_range *ranges; + int i = 0, err; + + damon_for_each_region(src_region, src) + i++; + if (!i) + return 0; + + ranges = kmalloc_array(i, sizeof(*ranges), GFP_KERNEL | __GFP_NOWARN); + if (!ranges) + return -ENOMEM; + i = 0; + damon_for_each_region(src_region, src) + ranges[i++] = src_region->ar; + err = damon_set_regions(dst, ranges, i); + kfree(ranges); + return err; +} + +static int damon_commit_target( + struct damon_target *dst, bool dst_has_pid, + struct damon_target *src, bool src_has_pid) +{ + int err; + + err = damon_commit_target_regions(dst, src); + if (err) + return err; + if (dst_has_pid) + put_pid(dst->pid); + if (src_has_pid) + get_pid(src->pid); + dst->pid = src->pid; + return 0; +} + +static int damon_commit_targets( + struct damon_ctx *dst, struct damon_ctx *src) +{ + struct damon_target *dst_target, *next, *src_target, *new_target; + int i = 0, j = 0, err; + + damon_for_each_target_safe(dst_target, next, dst) { + src_target = damon_nth_target(i++, src); + if (src_target) { + err = damon_commit_target( + dst_target, damon_target_has_pid(dst), + src_target, damon_target_has_pid(src)); + if (err) + return err; + } else { + if (damon_target_has_pid(dst)) + put_pid(dst_target->pid); + damon_destroy_target(dst_target); + } + } + + damon_for_each_target_safe(src_target, next, src) { + if (j++ < i) + continue; + new_target = damon_new_target(); + if (!new_target) + return -ENOMEM; + err = damon_commit_target(new_target, false, + src_target, damon_target_has_pid(src)); + if (err) + return err; + } + return 0; +} + +/** + * damon_commit_ctx() - Commit parameters of a DAMON context to another. + * @dst: The commit destination DAMON context. + * @src: The commit source DAMON context. + * + * This function copies user-specified parameters from @src to @dst and update + * the internal status and results accordingly. Users should use this function + * for context-level parameters update of running context, instead of manual + * in-place updates. + * + * This function should be called from parameters-update safe context, like + * DAMON callbacks. + */ +int damon_commit_ctx(struct damon_ctx *dst, struct damon_ctx *src) +{ + int err; + + err = damon_commit_schemes(dst, src); + if (err) + return err; + err = damon_commit_targets(dst, src); + if (err) + return err; + /* + * schemes and targets should be updated first, since + * 1. damon_set_attrs() updates monitoring results of targets and + * next_apply_sis of schemes, and + * 2. ops update should be done after pid handling is done (target + * committing require putting pids). + */ + err = damon_set_attrs(dst, &src->attrs); + if (err) + return err; + dst->ops = src->ops; + + return 0; +} + /** * damon_nr_running_ctxs() - Return number of currently running contexts. */ diff --git a/mm/damon/dbgfs.c b/mm/damon/dbgfs.c index 2461cfe2e968..51a6f1cac385 100644 --- a/mm/damon/dbgfs.c +++ b/mm/damon/dbgfs.c @@ -281,7 +281,7 @@ static struct damos **str_to_schemes(const char *str, ssize_t len, pos += parsed; scheme = damon_new_scheme(&pattern, action, 0, "a, - &wmarks); + &wmarks, NUMA_NO_NODE); if (!scheme) goto fail; diff --git a/mm/damon/lru_sort.c b/mm/damon/lru_sort.c index 3de2916a65c3..4af8fd4a390b 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); } /* Create a DAMON-based operation scheme for hot memory regions */ @@ -185,61 +186,48 @@ static struct damos *damon_lru_sort_new_cold_scheme(unsigned int cold_thres) return damon_lru_sort_new_scheme(&pattern, DAMOS_LRU_DEPRIO); } -static void damon_lru_sort_copy_quota_status(struct damos_quota *dst, - struct damos_quota *src) -{ - dst->total_charged_sz = src->total_charged_sz; - dst->total_charged_ns = src->total_charged_ns; - dst->charged_sz = src->charged_sz; - dst->charged_from = src->charged_from; - dst->charge_target_from = src->charge_target_from; - dst->charge_addr_from = src->charge_addr_from; -} - static int damon_lru_sort_apply_parameters(void) { - struct damos *scheme, *hot_scheme, *cold_scheme; - struct damos *old_hot_scheme = NULL, *old_cold_scheme = NULL; + struct damon_ctx *param_ctx; + struct damon_target *param_target; + struct damos *hot_scheme, *cold_scheme; unsigned int hot_thres, cold_thres; - int err = 0; + int err; - err = damon_set_attrs(ctx, &damon_lru_sort_mon_attrs); + err = damon_modules_new_paddr_ctx_target(¶m_ctx, ¶m_target); if (err) return err; - damon_for_each_scheme(scheme, ctx) { - if (!old_hot_scheme) { - old_hot_scheme = scheme; - continue; - } - old_cold_scheme = scheme; - } + err = damon_set_attrs(ctx, &damon_lru_sort_mon_attrs); + if (err) + goto out; + err = -ENOMEM; hot_thres = damon_max_nr_accesses(&damon_lru_sort_mon_attrs) * hot_thres_access_freq / 1000; hot_scheme = damon_lru_sort_new_hot_scheme(hot_thres); if (!hot_scheme) - return -ENOMEM; - if (old_hot_scheme) - damon_lru_sort_copy_quota_status(&hot_scheme->quota, - &old_hot_scheme->quota); + goto out; cold_thres = cold_min_age / damon_lru_sort_mon_attrs.aggr_interval; cold_scheme = damon_lru_sort_new_cold_scheme(cold_thres); if (!cold_scheme) { damon_destroy_scheme(hot_scheme); - return -ENOMEM; + goto out; } - if (old_cold_scheme) - damon_lru_sort_copy_quota_status(&cold_scheme->quota, - &old_cold_scheme->quota); - damon_set_schemes(ctx, &hot_scheme, 1); - damon_add_scheme(ctx, cold_scheme); + damon_set_schemes(param_ctx, &hot_scheme, 1); + damon_add_scheme(param_ctx, cold_scheme); - return damon_set_region_biggest_system_ram_default(target, + err = damon_set_region_biggest_system_ram_default(param_target, &monitor_region_start, &monitor_region_end); + if (err) + goto out; + err = damon_commit_ctx(ctx, param_ctx); +out: + damon_destroy_ctx(param_ctx); + return err; } static int damon_lru_sort_turn(bool on) diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c index 18797c1b419b..a9ff35341d65 100644 --- a/mm/damon/paddr.c +++ b/mm/damon/paddr.c @@ -12,6 +12,9 @@ #include <linux/pagemap.h> #include <linux/rmap.h> #include <linux/swap.h> +#include <linux/memory-tiers.h> +#include <linux/migrate.h> +#include <linux/mm_inline.h> #include "../internal.h" #include "ops-common.h" @@ -325,6 +328,153 @@ static unsigned long damon_pa_deactivate_pages(struct damon_region *r, return damon_pa_mark_accessed_or_deactivate(r, s, false); } +static unsigned int __damon_pa_migrate_folio_list( + struct list_head *migrate_folios, struct pglist_data *pgdat, + int target_nid) +{ + unsigned int nr_succeeded = 0; + nodemask_t allowed_mask = NODE_MASK_NONE; + struct migration_target_control mtc = { + /* + * Allocate from 'node', or fail quickly and quietly. + * When this happens, 'page' will likely just be discarded + * instead of migrated. + */ + .gfp_mask = (GFP_HIGHUSER_MOVABLE & ~__GFP_RECLAIM) | + __GFP_NOWARN | __GFP_NOMEMALLOC | GFP_NOWAIT, + .nid = target_nid, + .nmask = &allowed_mask + }; + + if (pgdat->node_id == target_nid || target_nid == NUMA_NO_NODE) + return 0; + + if (list_empty(migrate_folios)) + return 0; + + /* Migration ignores all cpuset and mempolicy settings */ + migrate_pages(migrate_folios, alloc_migrate_folio, NULL, + (unsigned long)&mtc, MIGRATE_ASYNC, MR_DAMON, + &nr_succeeded); + + return nr_succeeded; +} + +static unsigned int damon_pa_migrate_folio_list(struct list_head *folio_list, + struct pglist_data *pgdat, + int target_nid) +{ + unsigned int nr_migrated = 0; + struct folio *folio; + LIST_HEAD(ret_folios); + LIST_HEAD(migrate_folios); + + while (!list_empty(folio_list)) { + struct folio *folio; + + cond_resched(); + + folio = lru_to_folio(folio_list); + list_del(&folio->lru); + + if (!folio_trylock(folio)) + goto keep; + + /* Relocate its contents to another node. */ + list_add(&folio->lru, &migrate_folios); + folio_unlock(folio); + continue; +keep: + list_add(&folio->lru, &ret_folios); + } + /* 'folio_list' is always empty here */ + + /* Migrate folios selected for migration */ + nr_migrated += __damon_pa_migrate_folio_list( + &migrate_folios, pgdat, target_nid); + /* + * Folios that could not be migrated are still in @migrate_folios. Add + * those back on @folio_list + */ + if (!list_empty(&migrate_folios)) + list_splice_init(&migrate_folios, folio_list); + + try_to_unmap_flush(); + + list_splice(&ret_folios, folio_list); + + while (!list_empty(folio_list)) { + folio = lru_to_folio(folio_list); + list_del(&folio->lru); + folio_putback_lru(folio); + } + + return nr_migrated; +} + +static unsigned long damon_pa_migrate_pages(struct list_head *folio_list, + int target_nid) +{ + int nid; + unsigned long nr_migrated = 0; + LIST_HEAD(node_folio_list); + unsigned int noreclaim_flag; + + if (list_empty(folio_list)) + return nr_migrated; + + noreclaim_flag = memalloc_noreclaim_save(); + + nid = folio_nid(lru_to_folio(folio_list)); + do { + struct folio *folio = lru_to_folio(folio_list); + + if (nid == folio_nid(folio)) { + list_move(&folio->lru, &node_folio_list); + continue; + } + + nr_migrated += damon_pa_migrate_folio_list(&node_folio_list, + NODE_DATA(nid), + target_nid); + nid = folio_nid(lru_to_folio(folio_list)); + } while (!list_empty(folio_list)); + + nr_migrated += damon_pa_migrate_folio_list(&node_folio_list, + NODE_DATA(nid), + target_nid); + + memalloc_noreclaim_restore(noreclaim_flag); + + return nr_migrated; +} + +static unsigned long damon_pa_migrate(struct damon_region *r, struct damos *s) +{ + unsigned long addr, applied; + LIST_HEAD(folio_list); + + for (addr = r->ar.start; addr < r->ar.end; addr += PAGE_SIZE) { + struct folio *folio = damon_get_folio(PHYS_PFN(addr)); + + if (!folio) + continue; + + if (damos_pa_filter_out(s, folio)) + goto put_folio; + + if (!folio_isolate_lru(folio)) + goto put_folio; + list_add(&folio->lru, &folio_list); +put_folio: + folio_put(folio); + } + applied = damon_pa_migrate_pages(&folio_list, s->target_nid); + cond_resched(); + return applied * PAGE_SIZE; +} + + static unsigned long damon_pa_apply_scheme(struct damon_ctx *ctx, struct damon_target *t, struct damon_region *r, struct damos *scheme) @@ -336,6 +486,9 @@ static unsigned long damon_pa_apply_scheme(struct damon_ctx *ctx, return damon_pa_mark_accessed(r, scheme); case DAMOS_LRU_DEPRIO: return damon_pa_deactivate_pages(r, scheme); + case DAMOS_MIGRATE_HOT: + case DAMOS_MIGRATE_COLD: + return damon_pa_migrate(r, scheme); case DAMOS_STAT: break; default: @@ -356,6 +509,10 @@ static int damon_pa_scheme_score(struct damon_ctx *context, return damon_hot_score(context, r, scheme); case DAMOS_LRU_DEPRIO: return damon_cold_score(context, r, scheme); + case DAMOS_MIGRATE_HOT: + return damon_hot_score(context, r, scheme); + case DAMOS_MIGRATE_COLD: + return damon_cold_score(context, r, scheme); default: break; } diff --git a/mm/damon/reclaim.c b/mm/damon/reclaim.c index 9bd341d62b4c..9e0077a9404e 100644 --- a/mm/damon/reclaim.c +++ b/mm/damon/reclaim.c @@ -177,76 +177,65 @@ static struct damos *damon_reclaim_new_scheme(void) /* under the quota. */ &damon_reclaim_quota, /* (De)activate this according to the watermarks. */ - &damon_reclaim_wmarks); -} - -static void damon_reclaim_copy_quota_status(struct damos_quota *dst, - struct damos_quota *src) -{ - dst->total_charged_sz = src->total_charged_sz; - dst->total_charged_ns = src->total_charged_ns; - dst->charged_sz = src->charged_sz; - dst->charged_from = src->charged_from; - dst->charge_target_from = src->charge_target_from; - dst->charge_addr_from = src->charge_addr_from; - dst->esz_bp = src->esz_bp; + &damon_reclaim_wmarks, + NUMA_NO_NODE); } static int damon_reclaim_apply_parameters(void) { - struct damos *scheme, *old_scheme; + struct damon_ctx *param_ctx; + struct damon_target *param_target; + struct damos *scheme; struct damos_quota_goal *goal; struct damos_filter *filter; - int err = 0; + int err; - err = damon_set_attrs(ctx, &damon_reclaim_mon_attrs); + err = damon_modules_new_paddr_ctx_target(¶m_ctx, ¶m_target); if (err) return err; - /* Will be freed by next 'damon_set_schemes()' below */ + err = damon_set_attrs(ctx, &damon_reclaim_mon_attrs); + if (err) + goto out; + + err = -ENOMEM; scheme = damon_reclaim_new_scheme(); if (!scheme) - return -ENOMEM; - if (!list_empty(&ctx->schemes)) { - damon_for_each_scheme(old_scheme, ctx) - damon_reclaim_copy_quota_status(&scheme->quota, - &old_scheme->quota); - } + goto out; + damon_set_schemes(ctx, &scheme, 1); if (quota_mem_pressure_us) { goal = damos_new_quota_goal(DAMOS_QUOTA_SOME_MEM_PSI_US, quota_mem_pressure_us); - if (!goal) { - damon_destroy_scheme(scheme); - return -ENOMEM; - } + if (!goal) + goto out; damos_add_quota_goal(&scheme->quota, goal); } if (quota_autotune_feedback) { goal = damos_new_quota_goal(DAMOS_QUOTA_USER_INPUT, 10000); - if (!goal) { - damon_destroy_scheme(scheme); - return -ENOMEM; - } + if (!goal) + goto out; goal->current_value = quota_autotune_feedback; damos_add_quota_goal(&scheme->quota, goal); } if (skip_anon) { filter = damos_new_filter(DAMOS_FILTER_TYPE_ANON, true); - if (!filter) { - /* Will be freed by next 'damon_set_schemes()' below */ - damon_destroy_scheme(scheme); - return -ENOMEM; - } + if (!filter) + goto out; damos_add_filter(scheme, filter); } - damon_set_schemes(ctx, &scheme, 1); - return damon_set_region_biggest_system_ram_default(target, + err = damon_set_region_biggest_system_ram_default(param_target, &monitor_region_start, &monitor_region_end); + if (err) + goto out; + err = damon_commit_ctx(ctx, param_ctx); +out: + damon_destroy_ctx(param_ctx); + return err; } static int damon_reclaim_turn(bool on) diff --git a/mm/damon/sysfs-common.h b/mm/damon/sysfs-common.h index a63f51577cff..9a18f3c535d3 100644 --- a/mm/damon/sysfs-common.h +++ b/mm/damon/sysfs-common.h @@ -38,7 +38,7 @@ void damon_sysfs_schemes_rm_dirs(struct damon_sysfs_schemes *schemes); extern const struct kobj_type damon_sysfs_schemes_ktype; -int damon_sysfs_set_schemes(struct damon_ctx *ctx, +int damon_sysfs_add_schemes(struct damon_ctx *ctx, struct damon_sysfs_schemes *sysfs_schemes); void damon_sysfs_schemes_update_stats( diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c index bea5bc52846a..b095457380b5 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -6,6 +6,7 @@ */ #include <linux/slab.h> +#include <linux/numa.h> #include "sysfs-common.h" @@ -1445,6 +1446,7 @@ 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; }; /* This should match with enum damos_action */ @@ -1456,6 +1458,8 @@ static const char * const damon_sysfs_damos_action_strs[] = { "nohugepage", "lru_prio", "lru_deprio", + "migrate_hot", + "migrate_cold", "stat", }; @@ -1470,6 +1474,7 @@ static struct damon_sysfs_scheme *damon_sysfs_scheme_alloc( scheme->kobj = (struct kobject){}; scheme->action = action; scheme->apply_interval_us = apply_interval_us; + scheme->target_nid = NUMA_NO_NODE; return scheme; } @@ -1692,6 +1697,28 @@ static ssize_t apply_interval_us_store(struct kobject *kobj, return err ? err : count; } +static ssize_t target_nid_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + struct damon_sysfs_scheme *scheme = 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 = container_of(kobj, + struct damon_sysfs_scheme, kobj); + int err = 0; + + /* TODO: error handling for target_nid range. */ + err = 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)); @@ -1703,9 +1730,13 @@ static struct kobj_attribute damon_sysfs_scheme_action_attr = static struct kobj_attribute damon_sysfs_scheme_apply_interval_us_attr = __ATTR_RW_MODE(apply_interval_us, 0600); +static struct kobj_attribute damon_sysfs_scheme_target_nid_attr = + __ATTR_RW_MODE(target_nid, 0600); + static struct attribute *damon_sysfs_scheme_attrs[] = { &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); @@ -1877,14 +1908,10 @@ static int damon_sysfs_memcg_path_to_id(char *memcg_path, unsigned short *id) return found ? 0 : -EINVAL; } -static int damon_sysfs_set_scheme_filters(struct damos *scheme, +static int damon_sysfs_add_scheme_filters(struct damos *scheme, struct damon_sysfs_scheme_filters *sysfs_filters) { int i; - struct damos_filter *filter, *next; - - damos_for_each_filter_safe(filter, next, scheme) - damos_destroy_filter(filter); for (i = 0; i < sysfs_filters->nr; i++) { struct damon_sysfs_scheme_filter *sysfs_filter = @@ -1920,16 +1947,13 @@ static int damon_sysfs_set_scheme_filters(struct damos *scheme, return 0; } -static int damos_sysfs_set_quota_score( +static int damos_sysfs_add_quota_score( struct damos_sysfs_quota_goals *sysfs_goals, struct damos_quota *quota) { - struct damos_quota_goal *goal, *next; + struct damos_quota_goal *goal; int i; - damos_for_each_quota_goal_safe(goal, next, quota) - damos_destroy_quota_goal(goal); - for (i = 0; i < sysfs_goals->nr; i++) { struct damos_sysfs_quota_goal *sysfs_goal = sysfs_goals->goals_arr[i]; @@ -1952,10 +1976,13 @@ int damos_sysfs_set_quota_scores(struct damon_sysfs_schemes *sysfs_schemes, struct damon_ctx *ctx) { struct damos *scheme; + struct damos_quota quota = {}; int i = 0; + INIT_LIST_HEAD("a.goals); damon_for_each_scheme(scheme, ctx) { struct damon_sysfs_scheme *sysfs_scheme; + struct damos_quota_goal *g, *g_next; int err; /* user could have removed the scheme sysfs dir */ @@ -1963,10 +1990,17 @@ int damos_sysfs_set_quota_scores(struct damon_sysfs_schemes *sysfs_schemes, break; sysfs_scheme = sysfs_schemes->schemes_arr[i]; - err = damos_sysfs_set_quota_score(sysfs_scheme->quotas->goals, - &scheme->quota); + err = damos_sysfs_add_quota_score(sysfs_scheme->quotas->goals, + "a); + if (err) { + damos_for_each_quota_goal_safe(g, g_next, "a) + damos_destroy_quota_goal(g); + return err; + } + err = damos_commit_quota_goals(&scheme->quota, "a); + damos_for_each_quota_goal_safe(g, g_next, "a) + damos_destroy_quota_goal(g); if (err) - /* kdamond will clean up schemes and terminated */ return err; i++; } @@ -2031,17 +2065,18 @@ static struct damos *damon_sysfs_mk_scheme( }; scheme = 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; - err = damos_sysfs_set_quota_score(sysfs_quotas->goals, &scheme->quota); + err = damos_sysfs_add_quota_score(sysfs_quotas->goals, &scheme->quota); if (err) { damon_destroy_scheme(scheme); return NULL; } - err = damon_sysfs_set_scheme_filters(scheme, sysfs_filters); + err = damon_sysfs_add_scheme_filters(scheme, sysfs_filters); if (err) { damon_destroy_scheme(scheme); return NULL; @@ -2049,66 +2084,12 @@ static struct damos *damon_sysfs_mk_scheme( return scheme; } -static void damon_sysfs_update_scheme(struct damos *scheme, - struct damon_sysfs_scheme *sysfs_scheme) -{ - struct damon_sysfs_access_pattern *access_pattern = - sysfs_scheme->access_pattern; - struct damon_sysfs_quotas *sysfs_quotas = sysfs_scheme->quotas; - struct damon_sysfs_weights *sysfs_weights = sysfs_quotas->weights; - struct damon_sysfs_watermarks *sysfs_wmarks = sysfs_scheme->watermarks; - int err; - - scheme->pattern.min_sz_region = access_pattern->sz->min; - scheme->pattern.max_sz_region = access_pattern->sz->max; - scheme->pattern.min_nr_accesses = access_pattern->nr_accesses->min; - scheme->pattern.max_nr_accesses = access_pattern->nr_accesses->max; - scheme->pattern.min_age_region = access_pattern->age->min; - scheme->pattern.max_age_region = access_pattern->age->max; - - scheme->action = sysfs_scheme->action; - scheme->apply_interval_us = sysfs_scheme->apply_interval_us; - - scheme->quota.ms = sysfs_quotas->ms; - scheme->quota.sz = sysfs_quotas->sz; - scheme->quota.reset_interval = sysfs_quotas->reset_interval_ms; - scheme->quota.weight_sz = sysfs_weights->sz; - scheme->quota.weight_nr_accesses = sysfs_weights->nr_accesses; - scheme->quota.weight_age = sysfs_weights->age; - - err = damos_sysfs_set_quota_score(sysfs_quotas->goals, &scheme->quota); - if (err) { - damon_destroy_scheme(scheme); - return; - } - - scheme->wmarks.metric = sysfs_wmarks->metric; - scheme->wmarks.interval = sysfs_wmarks->interval_us; - scheme->wmarks.high = sysfs_wmarks->high; - scheme->wmarks.mid = sysfs_wmarks->mid; - scheme->wmarks.low = sysfs_wmarks->low; - - err = damon_sysfs_set_scheme_filters(scheme, sysfs_scheme->filters); - if (err) - damon_destroy_scheme(scheme); -} - -int damon_sysfs_set_schemes(struct damon_ctx *ctx, +int damon_sysfs_add_schemes(struct damon_ctx *ctx, struct damon_sysfs_schemes *sysfs_schemes) { - struct damos *scheme, *next; - int i = 0; - - damon_for_each_scheme_safe(scheme, next, ctx) { - if (i < sysfs_schemes->nr) - damon_sysfs_update_scheme(scheme, - sysfs_schemes->schemes_arr[i]); - else - damon_destroy_scheme(scheme); - i++; - } + int i; - for (; i < sysfs_schemes->nr; i++) { + for (i = 0; i < sysfs_schemes->nr; i++) { struct damos *scheme, *next; scheme = damon_sysfs_mk_scheme(sysfs_schemes->schemes_arr[i]); diff --git a/mm/damon/sysfs-test.h b/mm/damon/sysfs-test.h index 73bdce2452c1..1c9b596057a7 100644 --- a/mm/damon/sysfs-test.h +++ b/mm/damon/sysfs-test.h @@ -38,7 +38,7 @@ static int __damon_sysfs_test_get_any_pid(int min, int max) return -1; } -static void damon_sysfs_test_set_targets(struct kunit *test) +static void damon_sysfs_test_add_targets(struct kunit *test) { struct damon_sysfs_targets *sysfs_targets; struct damon_sysfs_target *sysfs_target; @@ -56,13 +56,13 @@ static void damon_sysfs_test_set_targets(struct kunit *test) ctx = damon_new_ctx(); - damon_sysfs_set_targets(ctx, sysfs_targets); + damon_sysfs_add_targets(ctx, sysfs_targets); KUNIT_EXPECT_EQ(test, 1u, nr_damon_targets(ctx)); sysfs_target->pid = __damon_sysfs_test_get_any_pid( sysfs_target->pid + 1, 200); - damon_sysfs_set_targets(ctx, sysfs_targets); - KUNIT_EXPECT_EQ(test, 1u, nr_damon_targets(ctx)); + damon_sysfs_add_targets(ctx, sysfs_targets); + KUNIT_EXPECT_EQ(test, 2u, nr_damon_targets(ctx)); damon_destroy_ctx(ctx); kfree(sysfs_targets->targets_arr); @@ -71,7 +71,7 @@ static void damon_sysfs_test_set_targets(struct kunit *test) } static struct kunit_case damon_sysfs_test_cases[] = { - KUNIT_CASE(damon_sysfs_test_set_targets), + KUNIT_CASE(damon_sysfs_test_add_targets), {}, }; diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index 6fee383bc0c5..cffc755e7775 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -1162,72 +1162,16 @@ destroy_targets_out: return err; } -static int damon_sysfs_update_target_pid(struct damon_target *target, int pid) -{ - struct pid *pid_new; - - pid_new = find_get_pid(pid); - if (!pid_new) - return -EINVAL; - - if (pid_new == target->pid) { - put_pid(pid_new); - return 0; - } - - put_pid(target->pid); - target->pid = pid_new; - return 0; -} - -static int damon_sysfs_update_target(struct damon_target *target, - struct damon_ctx *ctx, - struct damon_sysfs_target *sys_target) -{ - int err = 0; - - if (damon_target_has_pid(ctx)) { - err = damon_sysfs_update_target_pid(target, sys_target->pid); - if (err) - return err; - } - - /* - * Do monitoring target region boundary update only if one or more - * regions are set by the user. This is for keeping current monitoring - * target results and range easier, especially for dynamic monitoring - * target regions update ops like 'vaddr'. - */ - if (sys_target->regions->nr) - err = damon_sysfs_set_regions(target, sys_target->regions); - return err; -} - -static int damon_sysfs_set_targets(struct damon_ctx *ctx, +static int damon_sysfs_add_targets(struct damon_ctx *ctx, struct damon_sysfs_targets *sysfs_targets) { - struct damon_target *t, *next; - int i = 0, err; + int i, err; /* Multiple physical address space monitoring targets makes no sense */ if (ctx->ops.id == DAMON_OPS_PADDR && sysfs_targets->nr > 1) return -EINVAL; - damon_for_each_target_safe(t, next, ctx) { - if (i < sysfs_targets->nr) { - err = damon_sysfs_update_target(t, ctx, - sysfs_targets->targets_arr[i]); - if (err) - return err; - } else { - if (damon_target_has_pid(ctx)) - put_pid(t->pid); - damon_destroy_target(t); - } - i++; - } - - for (; i < sysfs_targets->nr; i++) { + for (i = 0; i < sysfs_targets->nr; i++) { struct damon_sysfs_target *st = sysfs_targets->targets_arr[i]; err = damon_sysfs_add_target(st, ctx); @@ -1339,12 +1283,15 @@ static int damon_sysfs_apply_inputs(struct damon_ctx *ctx, err = damon_sysfs_set_attrs(ctx, sys_ctx->attrs); if (err) return err; - err = damon_sysfs_set_targets(ctx, sys_ctx->targets); + err = damon_sysfs_add_targets(ctx, sys_ctx->targets); if (err) return err; - return damon_sysfs_set_schemes(ctx, sys_ctx->schemes); + return damon_sysfs_add_schemes(ctx, sys_ctx->schemes); } +static struct damon_ctx *damon_sysfs_build_ctx( + struct damon_sysfs_context *sys_ctx); + /* * damon_sysfs_commit_input() - Commit user inputs to a running kdamond. * @kdamond: The kobject wrapper for the associated kdamond. @@ -1353,14 +1300,22 @@ static int damon_sysfs_apply_inputs(struct damon_ctx *ctx, */ static int damon_sysfs_commit_input(struct damon_sysfs_kdamond *kdamond) { + struct damon_ctx *param_ctx; + int err; + if (!damon_sysfs_kdamond_running(kdamond)) return -EINVAL; /* TODO: Support multiple contexts per kdamond */ if (kdamond->contexts->nr != 1) return -EINVAL; - return damon_sysfs_apply_inputs(kdamond->damon_ctx, - kdamond->contexts->contexts_arr[0]); + param_ctx = damon_sysfs_build_ctx(kdamond->contexts->contexts_arr[0]); + if (IS_ERR(param_ctx)) + return PTR_ERR(param_ctx); + err = damon_commit_ctx(kdamond->damon_ctx, param_ctx); + damon_sysfs_destroy_targets(param_ctx); + damon_destroy_ctx(param_ctx); + return err; } static int damon_sysfs_commit_schemes_quota_goals( diff --git a/mm/damon/vaddr.c b/mm/damon/vaddr.c index 381559e4a1fa..58829baf8b5d 100644 --- a/mm/damon/vaddr.c +++ b/mm/damon/vaddr.c @@ -339,7 +339,7 @@ static void damon_hugetlb_mkold(pte_t *pte, struct mm_struct *mm, struct vm_area_struct *vma, unsigned long addr) { bool referenced = false; - pte_t entry = huge_ptep_get(pte); + pte_t entry = huge_ptep_get(mm, addr, pte); struct folio *folio = pfn_folio(pte_pfn(entry)); unsigned long psize = huge_page_size(hstate_vma(vma)); @@ -373,7 +373,7 @@ static int damon_mkold_hugetlb_entry(pte_t *pte, unsigned long hmask, pte_t entry; ptl = huge_pte_lock(h, walk->mm, pte); - entry = huge_ptep_get(pte); + entry = huge_ptep_get(walk->mm, addr, pte); if (!pte_present(entry)) goto out; @@ -509,7 +509,7 @@ static int damon_young_hugetlb_entry(pte_t *pte, unsigned long hmask, pte_t entry; ptl = huge_pte_lock(h, walk->mm, pte); - entry = huge_ptep_get(pte); + entry = huge_ptep_get(walk->mm, addr, pte); if (!pte_present(entry)) goto out; |