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b=f9IAxz9732L+u2X9kM2t69E546JI98VBHv0tsyapmY9RJYt/jVZV7oev1lQPmg1Nx XeC23/5wRZ0RuVW0bj6kI73EKTbOMKkT0PQ2OoJzKnQAqrqdoAEW3FKHoDk8Yl660E x4jDmpOurHwpT70ZQug1LjqszY8spxtHjFb6WM8kuSXHUq8xbySEjzy56ajGUKALb0 6yy1WX77ObnEJwQ6u+9GNCh9dpva4aMcbME2LVPKfr1+MgnlgSzv2Srm/gAR+vhfjT 8YoTBGUyhBHvda2d+dI7OZB+Ix+mfBwjkcLMqMCGOKQ3RPEyyh7+4eNuIwDCMdRo8x Us0S36xE6pTpQ== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v2.2 02/28] mm/damon/core: embed damon_probe objects in damon_ctx Date: Thu, 14 May 2026 17:44:03 -0700 Message-ID: <20260515004433.128933-3-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260515004433.128933-1-sj@kernel.org> References: <20260515004433.128933-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: ent1ntczi8zippttj9eocpjepbcbdzy9 X-Rspam-User: X-Rspamd-Queue-Id: D931DC0003 X-Rspamd-Server: rspam07 X-HE-Tag: 1778805886-948014 X-HE-Meta: U2FsdGVkX1/Rmrg1GTaIl5QIOjvKTF2TRqVD67SXviO1R29FlyKBuRZOrcmOmbCfM0GSzGPU3WkCHHm89DbuQWp+yB7gtflexjqe0cbiuxz/iAu2tVTYU2H1GD+uPviPvwO/MAqtJbCJbc9+gY94kHykny7Rk+LNeLdCCjOp7G+fpp6AusN/jKv1DbdMgsLlrggU7ePz8069KAxwPUmGJV7taibHLyDNu6172srm6+hNVqih+dRN50jk9P6Lw5AA8I4X4giBU6qzoxqRHCW5uVfG/3k4dNUIcDDKMCHD7z1QfiPy4qH/W1foK+YES29aHXhclPTRdcVyQEYUWb42lXfnmlV6900AvlelkHAt3Lp/j0w35YcNxzqysiKXjGN2tp3Po+xtigId8frUtqCLqFvxJOpIR4/L0bwZMLDX9DkJh5QPUHJ86gJ1HiEeNnr8L2sdiYyIzuL7Wwf9ayyXMjxa8hpkiENVh2I4YzAbUmJHsUGa1Wqve6TI3oukUhBytcnAp5A4OioZH/dYIum9Dut9UnXUOt+38pMb/g1DSCW8rQLX6HQf0e2NLMat8IKD5IDYJdrwNpN8mzlBmw/YCVCXAtVdxyZK7m5T4kf6kbyj1vuA2RZjeAlFWlpmJd9ZyLztNYMH71XRkErpt+cYAPXd9N7+TibP8DieY37R9x87dxv6JZdBgPJFE+osQ0690raBaMqhTDDZqr8KZ6ErqBnzTDZwyDY3CnkrXo8NKfBdBefNfQw5co87py5kI12nfkuR3R3nyw0MgXjn9ZOPzrDpzsMllb+2TzGb7GSeJx71N6kEMN/hPftauGEZTMMM4KCnszRHTKyOVDiEubBLqwJN+EMtOxiVn0kWvpGssUf6VgMVGHmnJWb0xYbHvCuWlauK3dJMyQyAgOEkVyHvBz95j71h7sL9lI+5euamlzGH6SuS8UV4Ejb4ujkmj1Ios7i+5HOBqNYLhsjjeWZ 4QntTgkz f6KeH+TPQpJDstGMHsBL9vc1+TTz/mawVxYmu7WIsFoWioVpQNoKgWvXEMemdMmTUo686eyF7LtOLz61vyACcsWgVdqjrZ7rb7g256+LFVCaAN9P7zOY10DR9iVtnwxq34fQOhLKl6lOquFvYYYc1TxQp+rgzGZNzSaeGpjvNqwaemJLLLQWm6/HNHPM930MlnQRHp1c5mrgk3Fxwc8A3H0uO/CEaFL0RkmDaCKgrFXIPgQ5HrRDtqLo5UW4MLZwOXBucEACwmh9z8JnH2fmGaGl5/w== 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 a8fff5325b010..3ba5a31b51769 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -847,6 +847,7 @@ struct damon_ctx { /* public: */ struct damon_operations ops; + struct list_head probes; unsigned long addr_unit; unsigned long min_region_sz; @@ -879,6 +880,11 @@ 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) @@ -921,6 +927,9 @@ 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 3dbbbfdeff719..0e55fa70fa5b6 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -109,6 +109,38 @@ 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) { @@ -601,6 +633,8 @@ 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; @@ -621,12 +655,16 @@ 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