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bh=w+y2YGAE9dCS66KlFXJ1CfqA9PNhGVCbFRiU+z6GWB8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=A8GMKvaur5A0pGiCYcRq25dH9g8ieYXqvdJV7+FJTx227q0RwkObIse7UVbq8E52B wsGio2tAGIeJImnBWe930VkihgttsxasQNoolrwco2tMmdTjC946GflB60YrJOBCJE 6PujGNQOkx18GuRX46w9/DdLvFPHwh/AOBM9S1fqD2bJfbICQwJwS58HQ9+Vm4skFW GS+tgCIKssbWirh9QIi/61bIyMrMqCH19z/v7kZTLxTEVEuUjETXoe7HmqtC4JfrEZ a3047oU+oe3oOmxG702GvYLytWS6KCzGCXD2jhOJmpSjWm/j+iXBXDAyXsrZLvlaxZ c9e5sWL6PEXIw== From: SJ Park To: Andrew Morton Cc: SJ Park , Brendan Higgins , David Gow , damon@lists.linux.dev, kunit-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 2/6] mm/damon/tests/core-kunit: add damon_commit_probes() test Date: Wed, 2 Sep 2026 07:03:08 -0700 Message-ID: <20260902140313.85983-3-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260902140313.85983-1-sj@kernel.org> References: <20260902140313.85983-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 78E0D14000C X-Stat-Signature: uid9gf8dhzfyr4t4k5a6uhm1eg6xgynh X-HE-Tag: 1788357819-242965 X-HE-Meta: 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 gKQBM+nj ppIBdjud/81wr34nTAkFBoih+3tXRQox+pUVrR+mXXaQBl4vgQibhJaoDMdNsf8rZ1+/2yIaWG8FpRpqU7CT9S2HdXIdu70JzAFydUyrcu4Jv/5OvzSGUylCAb4JLX8L3tkoyf4ETJ1oO8vxSs4j36FWoD5kozJXXat5FunNe7QB2FpaiUkNbA+ZHLlbkEvMRrdOidQ6MsM//z56Bp34QnKU9gSG/WW9N7QTCd35Xs3rXm/2qlI8RUqVaqya0PI/OrSoFcRGicC6cdvx3T2RHJZehaPWLNhhblx2V+Tk3RY6JJZ4imyip78Secv2L9/us032x Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Add kunit test to ensure damon_commit_probes() updates destination DAMON context with source probes as expected. Signed-off-by: SJ Park --- mm/damon/tests/core-kunit.h | 84 +++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) diff --git a/mm/damon/tests/core-kunit.h b/mm/damon/tests/core-kunit.h index c2ddef3c76d35..c01e6a75cadc1 100644 --- a/mm/damon/tests/core-kunit.h +++ b/mm/damon/tests/core-kunit.h @@ -1403,6 +1403,89 @@ static void damon_test_commit_filter(struct kunit *test) }); } +static struct damon_ctx *damon_test_help_setup_probes(unsigned int weights[], + int nr_weights) +{ + struct damon_ctx *ctx; + struct damon_probe *probe; + int i; + + ctx = damon_new_ctx(); + if (!ctx) + return NULL; + for (i = 0; i < nr_weights; i++) { + probe = damon_new_probe(); + if (!probe) { + damon_destroy_ctx(ctx); + return NULL; + } + probe->weight = weights[i]; + damon_add_probe(ctx, probe); + } + return ctx; +} + +static void damon_test_commit_probes_for(struct kunit *test, + unsigned int dst_weights[], int nr_dst_probes, + unsigned int src_weights[], int nr_src_probes) +{ + struct damon_ctx *dst, *src; + int err; + struct damon_probe *dst_probe, *src_probe; + + dst = damon_test_help_setup_probes(dst_weights, nr_dst_probes); + if (!dst) + kunit_skip(test, "dst alloc fail"); + src = damon_test_help_setup_probes(src_weights, nr_src_probes); + if (!src) { + damon_destroy_ctx(dst); + kunit_skip(test, "src alloc fail"); + } + + err = damon_commit_probes(dst, src); + KUNIT_EXPECT_EQ(test, err, 0); + if (err) + goto out; + nr_dst_probes = 0; + damon_for_each_probe(dst_probe, dst) + nr_dst_probes++; + nr_src_probes = 0; + damon_for_each_probe(src_probe, src) + nr_src_probes++; + KUNIT_EXPECT_EQ(test, nr_dst_probes, nr_src_probes); + if (nr_dst_probes != nr_src_probes) + goto out; + nr_dst_probes = 0; + damon_for_each_probe(dst_probe, dst) { + src_probe = damon_nth_probe(nr_dst_probes, src); + KUNIT_EXPECT_EQ(test, src_probe->weight, dst_probe->weight); + nr_dst_probes++; + } +out: + damon_destroy_ctx(dst); + damon_destroy_ctx(src); +} + +static void damon_test_commit_probes(struct kunit *test) +{ + damon_test_commit_probes_for(test, + (unsigned int[]){}, 0, (unsigned int[]){}, 0); + damon_test_commit_probes_for(test, + (unsigned int[]){}, 0, (unsigned int[]){1}, 1); + damon_test_commit_probes_for(test, + (unsigned int[]){}, 0, (unsigned int[]){1, 2}, 2); + damon_test_commit_probes_for(test, + (unsigned int[]){1}, 1, (unsigned int[]){2}, 1); + damon_test_commit_probes_for(test, + (unsigned int[]){1}, 1, (unsigned int[]){2, 3}, 2); + damon_test_commit_probes_for(test, + (unsigned int[]){2, 3}, 2, (unsigned int[]){1}, 1); + damon_test_commit_probes_for(test, + (unsigned int[]){2, 3}, 2, (unsigned int[]){}, 0); + damon_test_commit_probes_for(test, + (unsigned int[]){2}, 1, (unsigned int[]){}, 0); +} + static void damon_test_commit_ctx(struct kunit *test) { struct damon_ctx *src, *dst; @@ -1811,6 +1894,7 @@ static struct kunit_case damon_test_cases[] = { KUNIT_CASE(damos_test_commit_migrate_hot), KUNIT_CASE(damon_test_commit_target_regions), KUNIT_CASE(damon_test_commit_filter), + KUNIT_CASE(damon_test_commit_probes), KUNIT_CASE(damon_test_commit_ctx), KUNIT_CASE(damon_test_valid_probe_params), KUNIT_CASE(damos_test_filter_out), -- 2.47.3