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b=bjMok+L/UpJK1v8J5IfXwSLOAwkOflKm3vr+Jrr+AC2hKG5kEuhbMy+5QW1dvkuwM 5wwIJ5iewvKVep/IpsYA4aIppO9GLKqH/ne77X6KuZX2ekF3H1FmwCApMD0U9Nuo7i KNKjuY6b8goJGXBvREVbWc2/yDPfodSenFLox4x8mPtUsEGPaMMH0E2+AnZNel9M8r cYPWVqJFcKOwSrwMIrWzAiT8aOSyQpd7AHfiR6m8FnnB6s1n/rE/AMZlJF35dgLuRX KOMV6h8vU/ULk+SeUqzdAlblFF5LVXL1+/dkn/VEI5AtrXi5SGMertHWs6sM0cCMkD XI8HGVOYdXcqQ== From: SeongJae Park To: Andrew Morton Cc: SeongJae Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 02/28] mm/damon/core: embed damon_probe objects in damon_ctx Date: Mon, 18 May 2026 16:40:50 -0700 Message-ID: <20260518234119.97569-3-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260518234119.97569-1-sj@kernel.org> References: <20260518234119.97569-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: BD3DE120003 X-Stat-Signature: 6d6mgyyz7hijhtit3xxbftjfuhx1378m X-Rspam-User: X-HE-Tag: 1779147685-973098 X-HE-Meta: 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 5BLZsJ6P X+bsuaPJQR4cAuwNG58cf5BgkQbLG7ba0G9OFRudZwKpSST8+m69XiHVeUhwEzzXopgBac/r7YwgARiTmSoHxXDimmKNDjbj4GjO0Ed4v4nvEPoH0AmClf+7AGYHJyMC7saHkSH/eNFZaRG/DXzLh8nnCP+Obi++hH5FSSn4kL4/S4VL6KrmKJr76cNqn8o3LU1/AhPGCcG/V+ip29hetEzTrjLjxnM5j5r9ushuZRyaWbJg7rxZbcm79JJhijSx3HzABrTk2OtViu/OpxfW38Qj6FQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Let damon_probe objects be able to be installed on a given damon_ctx, by adding a linked list header for storing the objects. Add initialization and cleanup of the new field with helper functions, too. Signed-off-by: SeongJae Park --- include/linux/damon.h | 9 +++++++++ mm/damon/core.c | 38 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 47 insertions(+) diff --git a/include/linux/damon.h b/include/linux/damon.h index 4794931fa2ea3..43d71eb24ccb6 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -857,6 +857,7 @@ struct damon_ctx { /* public: */ struct damon_operations ops; + struct list_head probes; unsigned long addr_unit; unsigned long min_region_sz; bool pause; @@ -909,6 +910,11 @@ static inline unsigned long damon_sz_region(struct damon_region *r) return r->ar.end - r->ar.start; } +#define damon_for_each_probe(p, ctx) \ + list_for_each_entry(p, &(ctx)->probes, list) + +#define damon_for_each_probe_safe(p, next, ctx) \ + list_for_each_entry_safe(p, next, &(ctx)->probes, list) #define damon_for_each_region(r, t) \ list_for_each_entry(r, &t->regions_list, list) @@ -951,6 +957,9 @@ static inline unsigned long damon_sz_region(struct damon_region *r) #ifdef CONFIG_DAMON +struct damon_probe *damon_new_probe(void); +void damon_add_probe(struct damon_ctx *ctx, struct damon_probe *probe); + struct damon_region *damon_new_region(unsigned long start, unsigned long end); /* diff --git a/mm/damon/core.c b/mm/damon/core.c index 59e51134d0ed0..6ce1b949efaa7 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -113,6 +113,38 @@ int damon_select_ops(struct damon_ctx *ctx, enum damon_ops_id id) return err; } +struct damon_probe *damon_new_probe(void) +{ + struct damon_probe *p; + + p = kmalloc_obj(*p); + if (!p) + return NULL; + INIT_LIST_HEAD(&p->list); + return p; +} + +void damon_add_probe(struct damon_ctx *ctx, struct damon_probe *probe) +{ + list_add_tail(&probe->list, &ctx->probes); +} + +static void damon_del_probe(struct damon_probe *p) +{ + list_del(&p->list); +} + +static void damon_free_probe(struct damon_probe *p) +{ + kfree(p); +} + +static void damon_destroy_probe(struct damon_probe *p) +{ + damon_del_probe(p); + damon_free_probe(p); +} + #ifdef CONFIG_DAMON_DEBUG_SANITY static void damon_verify_new_region(unsigned long start, unsigned long end) { @@ -605,6 +637,8 @@ struct damon_ctx *damon_new_ctx(void) ctx->attrs.min_nr_regions = 10; ctx->attrs.max_nr_regions = 1000; + INIT_LIST_HEAD(&ctx->probes); + ctx->addr_unit = 1; ctx->min_region_sz = DAMON_MIN_REGION_SZ; @@ -627,12 +661,16 @@ static void damon_destroy_targets(struct damon_ctx *ctx) void damon_destroy_ctx(struct damon_ctx *ctx) { struct damos *s, *next_s; + struct damon_probe *p, *next_p; damon_destroy_targets(ctx); damon_for_each_scheme_safe(s, next_s, ctx) damon_destroy_scheme(s); + damon_for_each_probe_safe(p, next_p, ctx) + damon_destroy_probe(p); + kfree(ctx); } -- 2.47.3