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b=K+UxNb0YCGeNfa+n6P1nu3YMCqGAXuvj1D1MEMX/tCmR97lOSfrytuUmBhWen9hk5 XQZIsVWXa1V0V9rH2WvqLgEAM8AqH3oRBSxlfC+446bBKX/ruVKKs5VBL5wuBUyYgg jItKxirBf3+vOW/BoTuaHgAZ6EZiJLJovv6Ni0MVGPSN+UUeUVE6o2GqjUWTGvInqW e7clg5PcoDR2lCcLWVqFTJmBuZcWdNwOADLATTmX8XKPetpDN/A/0XBXykKTjiSFcw Tg3wER+d/zJXNxMUxJoautQdM3nbQli/VYBrr9Om1R/FuCrto9RTyo/LLh+p4Fn0DB BUVyqDzmZIG3A== From: SJ Park To: Andrew Morton Cc: SJ Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 11/19] mm/damon/core: disable access monitoring when probe weights are set Date: Fri, 10 Jul 2026 06:46:40 -0700 Message-ID: <20260710134651.18084-12-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260710134651.18084-1-sj@kernel.org> References: <20260710134651.18084-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 93EAE100007 X-Stat-Signature: hmhcj4qo39equb3dopsf5qp1qj5f8m6r X-HE-Tag: 1783691224-224072 X-HE-Meta: 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 uOo/SpvU p9gsW4b7UBwSOEfq44PFK0/iNkeb4GLJ+psQl4S3NqeApRXtcYjxLnOJX+qpPYEOlgBReS8vHixvEYfCfGzNjyKd+LItRKTu25sDVRbBPTB8T0fHWFvgCCnZMLN06B5MJqXEK25jfwM8W/eG8Wac5PvCtB7xtGPKn62pCmVw1amwYhdLdBH4BVVnbY/DGLJULV1S9mLsf01nVWdb6CtBlBkVLLJwUeSSMeXpnJaYDLE7/BG0= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: When users set probe weights, they are interested in the data attributes. Not necessarily they are interested in data access patterns. Disable the data access monitoring in the case. Signed-off-by: SJ Park --- mm/damon/core.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/mm/damon/core.c b/mm/damon/core.c index a0e6a5129fbf3..65f91e3b58d2e 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -3763,17 +3763,18 @@ static int kdamond_fn(void *data) unsigned long next_aggregation_sis = ctx->next_aggregation_sis; unsigned long next_ops_update_sis = ctx->next_ops_update_sis; unsigned long sample_interval = ctx->attrs.sample_interval; + bool access_check_disabled = damon_has_probe_weights(ctx); if (kdamond_wait_activation(ctx)) break; - if (ctx->ops.prepare_access_checks) + if (!access_check_disabled && ctx->ops.prepare_access_checks) ctx->ops.prepare_access_checks(ctx); kdamond_usleep(sample_interval); ctx->passed_sample_intervals++; - if (ctx->ops.check_accesses) + if (!access_check_disabled && ctx->ops.check_accesses) max_nr_accesses = ctx->ops.check_accesses(ctx); if (ctx->ops.apply_probes) ctx->ops.apply_probes(ctx, false, false); -- 2.47.3