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b=VVdqfGs1wxQksNwRWcqJuVW5ydFkI7vXR6XZMrvGdSChHcdzrXyrjNAYWHwyVJnGD 4SCeJ0lugvVStzzuZprTF7zEOD2SNRQja8f6kMLTNYgu93vKvc6W+j2wjawHfuF+B5 uWFFY9YTlmeGhCHDleDe3ihGqcdlt99CyLtWOOyrTzz/mH6W9s5pS8z83pnRVAXU7a k+EMPOs019JXcJUYsYgAhP3+EWKPmkM6OpI9fh/+wbJq3mkPXpQ9Hh4DQU4+sSf2O7 UP1V1IJqsxbBcQS5KLzSgSvTCB9SNyNLza+YtHRYQgqNg1cz7aarKqyqT+tLBT7t8X s/B1VeUFpScgA== 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 v2.1 02/28] mm/damon/core: embed damon_probe objects in damon_ctx Date: Thu, 14 May 2026 07:08:35 -0700 Message-ID: <20260514140904.119781-3-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260514140904.119781-1-sj@kernel.org> References: <20260514140904.119781-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: E9515140002 X-Stat-Signature: pf1b5n7t3jcrsxj6931pm3qh3prmta8n X-HE-Tag: 1778767759-674862 X-HE-Meta: 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 oI+JNsJg HLa9B0prBcRVURCIdCMzm2pP8vQURfSTkk4P3iD66PojyfxULbvkl3oefDgLjM2vGfBfj7kbsLeQzO70aHWNmYiZU05P6R/KYUZAl/ww7OWk5LD0d/H+8y3aD0muoFtlOSS/we5Xk238Pgs0T65JwsaN1Y57/aLVtX9eQfG+XaotVPNN7GHF2B0tEBUK9nzwZ4+b2BAW63p0G+vYmf0Nt1U6f1i+TwDfNmwlOIx191EA3dCtE1xTLq4iZ8hwbv8XUHKfOt+kbQ1qrdBFVc3tVCLd4gQ== 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..dc53bc3da74b3 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 3a8725e400c6b..8a55cc61d2972 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