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b=os0gBHJHahHk/HMbnOsr8aOC6mf9fC0x+yISiRhTktEn1nluY6OaB82kZ2Y2HcTsp VoXK6LvyKbN5P4ymo+BdJUI/FKpJGfrTXeX7jRTcpl5FGLN1AWEqsMjSMi7LoYjlmX KaQRtevWPo0QgZPlK54LurK29YOMDPuSBxeqbH5iXLULy7CPK4Uh5W1wfca+16X1KP Hu86EpXtFQNWk/WCNLLRopq25OIHTeRlDpldzP7hVtTdcsqJRk/CHbetIBO0ecRSmK Cs32aLTLxmysA9hG+xbkX3/YCsYrBCd6Bejgyd6JAlLrgsgrFuvu3NVz1eDVMYQfPp 6s6S/rhp4LPhw== From: SeongJae Park To: Andrew Morton Cc: SeongJae Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 04/28] mm/damon/core: commit probes Date: Mon, 18 May 2026 16:40:52 -0700 Message-ID: <20260518234119.97569-5-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-Rspam-User: X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 3777A1C0004 X-Stat-Signature: joi5y3di983yu6tniyjsmnhynnnqujsn X-HE-Tag: 1779147686-442933 X-HE-Meta: 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 ZJLV5x6f 7ezVA7RK798bnXspfhpvUkYKmN1QUtpHAza5g2Q4p29wFwcTlQYcJ6AIpipbqu+fFyGWg8VtU5tdTuHc1bWFR2AKjgKDdx2q6eENuv7jTRTEHd+ssThdcTPCOPIjyqEeiBZ6U7xx47CHJmd86qFSotb005/bz8TZkprNBKIf5v5UiOrItFmCImk2D5dP2jS+JwDcgmayFYXHCXhKd6x3vVZceM0eG2ne/n7AfF851syHWU7g= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Update damon_commit_ctx() to commit installed data probes, too. Signed-off-by: SeongJae Park --- mm/damon/core.c | 104 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 104 insertions(+) diff --git a/mm/damon/core.c b/mm/damon/core.c index 516368fbf1de3..075d60a4749a3 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -133,11 +133,34 @@ void damon_add_filter(struct damon_probe *p, struct damon_filter *f) list_add_tail(&f->list, &p->filters); } +static void damon_del_filter(struct damon_filter *f) +{ + list_del(&f->list); +} + static void damon_free_filter(struct damon_filter *f) { kfree(f); } +static void damon_destroy_filter(struct damon_filter *f) +{ + damon_del_filter(f); + damon_free_filter(f); +} + +static struct damon_filter *damon_nth_filter(int n, struct damon_probe *p) +{ + struct damon_filter *f; + int i = 0; + + damon_for_each_filter(f, p) { + if (i++ == n) + return f; + } + return NULL; +} + struct damon_probe *damon_new_probe(void) { struct damon_probe *p; @@ -175,6 +198,18 @@ static void damon_destroy_probe(struct damon_probe *p) damon_free_probe(p); } +static struct damon_probe *damon_nth_probe(int n, struct damon_ctx *ctx) +{ + struct damon_probe *p; + int i = 0; + + damon_for_each_probe(p, ctx) { + if (i++ == n) + return p; + } + return NULL; +} + #ifdef CONFIG_DAMON_DEBUG_SANITY static void damon_verify_new_region(unsigned long start, unsigned long end) { @@ -1389,6 +1424,72 @@ static int damon_commit_targets( return 0; } +static void damon_commit_filter(struct damon_filter *dst, + struct damon_filter *src) +{ + dst->type = src->type; + dst->matching = src->matching; + dst->allow = src->allow; +} + +static int damon_commit_filters(struct damon_probe *dst, + struct damon_probe *src) +{ + struct damon_filter *dst_filter, *next, *src_filter, *new_filter; + int i = 0, j = 0; + + damon_for_each_filter_safe(dst_filter, next, dst) { + src_filter = damon_nth_filter(i++, src); + if (src_filter) + damon_commit_filter(dst_filter, src_filter); + else + damon_destroy_filter(dst_filter); + } + + damon_for_each_filter_safe(src_filter, next, src) { + if (j++ < i) + continue; + + new_filter = damon_new_filter(src_filter->type, + src_filter->matching, src_filter->allow); + if (!new_filter) + return -ENOMEM; + damon_add_filter(dst, new_filter); + } + return 0; +} + +static int damon_commit_probes(struct damon_ctx *dst, struct damon_ctx *src) +{ + struct damon_probe *dst_probe, *next, *src_probe, *new_probe; + int i = 0, j = 0, err; + + damon_for_each_probe_safe(dst_probe, next, dst) { + src_probe = damon_nth_probe(i++, src); + if (src_probe) { + err = damon_commit_filters(dst_probe, src_probe); + if (err) + return err; + } else { + damon_destroy_probe(dst_probe); + } + } + + damon_for_each_probe_safe(src_probe, next, src) { + if (j++ < i) + continue; + + new_probe = damon_new_probe(); + if (!new_probe) + return -ENOMEM; + damon_add_probe(dst, new_probe); + err = damon_commit_filters(new_probe, src_probe); + if (err) + return err; + } + return 0; +} + /** * damon_commit_ctx() - Commit parameters of a DAMON context to another. * @dst: The commit destination DAMON context. @@ -1445,6 +1546,9 @@ int damon_commit_ctx(struct damon_ctx *dst, struct damon_ctx *src) } dst->pause = src->pause; dst->ops = src->ops; + err = damon_commit_probes(dst, src); + if (err) + return err; dst->addr_unit = src->addr_unit; dst->min_region_sz = src->min_region_sz; -- 2.47.3