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Mon, 27 Mar 2023 09:52:31 -0700 (PDT) Received: from pc638.lan ([155.137.26.201]) by smtp.gmail.com with ESMTPSA id b24-20020a170906491800b008e82cb55195sm14217282ejq.203.2023.03.27.09.52.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Mar 2023 09:52:31 -0700 (PDT) From: "Uladzislau Rezki (Sony)" To: Andrew Morton Cc: linux-mm@kvack.org, LKML , Baoquan He , Lorenzo Stoakes , Christoph Hellwig , Matthew Wilcox , Dave Chinner , Uladzislau Rezki , Oleksiy Avramchenko Subject: [PATCH v2 2/2] lib/test_vmalloc.c: Add vm_map_ram()/vm_unmap_ram() test case Date: Mon, 27 Mar 2023 18:52:27 +0200 Message-Id: <20230327165228.405045-2-urezki@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230327165228.405045-1-urezki@gmail.com> References: <20230327165228.405045-1-urezki@gmail.com> MIME-Version: 1.0 X-Rspamd-Queue-Id: A978E2000C X-Rspamd-Server: rspam09 X-Rspam-User: X-Stat-Signature: j8qsd85binodurpcxnq3sq6xpaytcub3 X-HE-Tag: 1679935952-89242 X-HE-Meta: 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 iZBTxIVV vZrUJrcdSjDNjVBqxBidmfnBt0IK4YqFmVQ+U6GrA7D8qPpbR0EOjOSw8IMiRpbIwY85TfWlPTZHMz3zy0gNVYGh4F2j+M9qbjR/FTymQD4YF2itH17x03KC4cTFaytVSNQjJ+KQiAn9RriODqOtZOitgK1XO76HHYUU9waWfU3aYzPXzcGVtpmuongLSoX+XXkIPhYP75skY+jSOD0G1DuwmB19dfJ8SfiHdm0lLMogt10jWuWqbELVZN7ESF5Fpex+34lff3V/GQY9uVdrIKwsrPYOTDf8JLyuZ22Kt97uZIQ7TmeQO+JYWpCYa0mK2kzQ3zIYlU+s87yTVwQTy9NgCq/CwZ3tzI/eVmwdzLS0yfeEkOc4AKHz8pl/pKKgujyE5JNolpY5tvrOFqwb8ZQxh1v3SOgDmvy2Kru6xcSrlvvk6SH3+TiszZwBuKfuHnhBOktBpTfSF+0H3BbdzihmdAZOBmOJ3T9PDdT3OzQVT9RM3HboYIx3xdY60CKQLtFXv X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Add vm_map_ram()/vm_unmap_ram() test case to our stress test-suite. Signed-off-by: Uladzislau Rezki (Sony) --- lib/test_vmalloc.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/lib/test_vmalloc.c b/lib/test_vmalloc.c index cd2bdba6d3ed..6633eda4cd4d 100644 --- a/lib/test_vmalloc.c +++ b/lib/test_vmalloc.c @@ -53,6 +53,7 @@ __param(int, run_test_mask, INT_MAX, "\t\tid: 128, name: pcpu_alloc_test\n" "\t\tid: 256, name: kvfree_rcu_1_arg_vmalloc_test\n" "\t\tid: 512, name: kvfree_rcu_2_arg_vmalloc_test\n" + "\t\tid: 1024, name: vm_map_ram_test\n" /* Add a new test case description here. */ ); @@ -358,6 +359,45 @@ kvfree_rcu_2_arg_vmalloc_test(void) return 0; } +static int +vm_map_ram_test(void) +{ + unsigned int map_nr_pages; + unsigned char *v_ptr; + unsigned char *p_ptr; + struct page **pages; + struct page *page; + int i; + + map_nr_pages = nr_pages > 0 ? nr_pages:1; + pages = kmalloc(map_nr_pages * sizeof(*page), GFP_KERNEL); + if (!pages) + return -1; + + for (i = 0; i < map_nr_pages; i++) { + page = alloc_pages(GFP_KERNEL, 1); + if (!page) + return -1; + + pages[i] = page; + } + + /* Run the test loop. */ + for (i = 0; i < test_loop_count; i++) { + v_ptr = vm_map_ram(pages, map_nr_pages, -1); + *v_ptr = 'a'; + vm_unmap_ram(v_ptr, map_nr_pages); + } + + for (i = 0; i < map_nr_pages; i++) { + p_ptr = page_address(pages[i]); + free_pages((unsigned long)p_ptr, 1); + } + + kfree(pages); + return 0; +} + struct test_case_desc { const char *test_name; int (*test_func)(void); @@ -374,6 +414,7 @@ static struct test_case_desc test_case_array[] = { { "pcpu_alloc_test", pcpu_alloc_test }, { "kvfree_rcu_1_arg_vmalloc_test", kvfree_rcu_1_arg_vmalloc_test }, { "kvfree_rcu_2_arg_vmalloc_test", kvfree_rcu_2_arg_vmalloc_test }, + { "vm_map_ram_test", vm_map_ram_test }, /* Add a new test case here. */ };