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b=RR5EwBmInBmc6wr6EdqCKxSapCPXsS9LvMd1PJuZcOZp+D6SB+pJQ9WVNnrBQOIxQ j7ltUi5IPVTA6F5wMfIE8MxBdoCp92tGku5J1a2ztyR9dwMeSKv9UXH+PAyquRwpUg nSML7ZM9CHpmx/01mVpcBKJF6sDq1gogwPtX1sdNcoKFr8epCiA6afiTcogvXQGYh+ nUXc2YkzeIgaT9/EFDrm9B9P/PEhFKCwpZmevXXX7kU9SoWs2OXBAvEMxmrDcBnMHF rUTHgcaY97UfMbtsqPUgXL6Jas9vAG55HiMbxCYBYFgZYsqyoTVy60tEQTdjGA+HdE f6EO03eQeJaCw== From: SJ Park To: Cc: SJ Park , Andrew Morton , 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: [RFC PATCH v1.1 2/6] mm/damon/tests/core-kunit: add damon_commit_probes() test Date: Wed, 29 Jul 2026 21:39:39 -0700 Message-ID: <20260730043944.146030-3-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260730043944.146030-1-sj@kernel.org> References: <20260730043944.146030-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 467FD40003 X-Rspam-User: X-Stat-Signature: gep4dqe834pdb1m5erhreo4jr46reexn X-Rspamd-Server: rspam04 X-HE-Tag: 1785386397-13139 X-HE-Meta: U2FsdGVkX194zRpkR0mD0WU/Omf9/aGMuRtE2IXYXCX1R4NIOYJogsyJUaWOKDqFsH0MmgKflI/P1oIWPxIyUoAVzzbey6c/lbsaRYHidmLp0BqtLyVEtXu8nu738oo7LZuPohFM/drbe9XVOGY/4nZwZG0mQkVYJE4Ya2kzjqSkMjro7m8od/RNgK/7wTW8aGnXz3TezNTQnBHi0gbqHS5KeVI3CqXTHK3BfwPeoA2H1VYX9KLfHcdjMr9b0zIaVFiwce/3alN8zBtUr4Kako9Tb4CmpxvcNNoIVI+aSD8E/zcqi4f71tJMSqK4q2YjGp8Io+7VjmNfcGZCZFgx4pHG4YFrQymhsZp79hahysZ4IKfbeShsaW9FWT3bZ35DfyrC/FXT27n39bj5195EbjRLhUsBAIzgdTXWW7MknDf2vhhVZkmrUIZDv4LCliYGcC3MfS5J0Q2nPzv5EMqx5Y0aVm6HM5Pmg1O3ueaL5S26SW8hFLkrYfNMjpV8PJ8PeSf4B4/IeWr5fZ90qKyjS3zbzsVHJzzCAK3NFijsoS0xh7d5JVq7ZaWi977Byx0GI2u6FF/+nsqZucyRAjji/MqHdErm6wWXv3+bNg4igb5ICVkUCnsmEVRUy6B19F2KxGl0dkqNLaG8Y8Sb2FgUpINsACsQEaFaSSUmQjhqOE/ARSlybZEJJWx4EeBreCzVl1ssefABJxXmZbIy46P1rE1RWxbfqHn/1Rk9gdGhtPrsah5e1Xuo1FLFz+r1QDE5be2sS7mUrkUdDtCdLm0myutTc8emNUFTHYW0LFSUG+z3Kwtm4+hKqgKjm7BnKGNkRbhkck6yS4hMLpwI13oxznD9NT23wn2V3geU60VTIYaSoa8YoY6CmP6XfhhAsaXjkH5G29ZCcrvgwII91Ioa8fVdSSrhKgbSGr2Q0mJdseSN3EoD2Lg7A+a34KbvdVcOLfKVOOclc4Y7A5/8/1Z W+VoI50k CD2/mQaGwywvHYqtOOQ3w46r+OEsGbJ4k2CM8rAZCJJ28hxy0V7O+2CkFqz4qNcBD9REJ17dtnWZnC/7ak4D6l1UuqC4hcItD8bUU+Xf6YHMiWUpx5X0d1nroSiKfaWzPf6DAt9r96MX+KzCu5ZNHQddX0GeY2xkYT2auXgxIiRiwpYKPO0WXwbs8/Gpp4T0OlOHfOoLKrRZgBWqu7AXdsnZXMY7TRUv8Tm4/NsYKteZet+7sPIhbloAWTAg49+RhpgS8wbyOU4R6W2tHAZ4daiK86n5eFO8jCWooIauo45VSfL4xxY93HHvL/oeTGj3/1ZPr 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 9cd2be03aeb9b..2ef0609b8d0e5 100644 --- a/mm/damon/tests/core-kunit.h +++ b/mm/damon/tests/core-kunit.h @@ -1393,6 +1393,89 @@ 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; @@ -1745,6 +1828,7 @@ 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(damos_test_filter_out), KUNIT_CASE(damon_test_feed_loop_next_input), -- 2.47.3