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Thu, 30 Mar 2023 19:59:31 -0400 X-MC-Unique: QnEG9cVDO7achDnPtWdxjQ-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 78F40185A78B; Thu, 30 Mar 2023 23:59:30 +0000 (UTC) Received: from localhost (ovpn-12-64.pek2.redhat.com [10.72.12.64]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 22A5F404DC50; Thu, 30 Mar 2023 23:59:28 +0000 (UTC) Date: Fri, 31 Mar 2023 07:59:25 +0800 From: Baoquan He To: "Uladzislau Rezki (Sony)" Cc: Andrew Morton , linux-mm@kvack.org, LKML , Lorenzo Stoakes , Christoph Hellwig , Matthew Wilcox , Dave Chinner , Oleksiy Avramchenko Subject: Re: [PATCH v4 2/2] lib/test_vmalloc.c: Add vm_map_ram()/vm_unmap_ram() test case Message-ID: References: <20230330190639.431589-1-urezki@gmail.com> <20230330190639.431589-2-urezki@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230330190639.431589-2-urezki@gmail.com> X-Scanned-By: MIMEDefang 3.1 on 10.11.54.1 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 4A933180003 X-Stat-Signature: uh65hq6q7y31xb5ndqk988bictjhd4hb X-Rspam-User: X-HE-Tag: 1680220777-799215 X-HE-Meta: U2FsdGVkX19qJVf/7jfQtTwo8unyRQWMF4y7Xl4QsD2WnhNperFIB623hMpg5x0hSkclMe52ewXioo7pxj++/Xyif0eVVcyWtmi7V4/WDxhd9D8XHdgpSvXl7G/XCq7AVS6cdoH+Q4+tYQC74gtsc5980eYmKUKu6Ymt7CZH5hJwAWdE3UI33eGwikFYyr++Z4JVlmV2T9fylcuFK5HcI+daOBcewlGzB8GRcKZnW9BizSHwqHrLGZ/Og+JN80pR8bdVN7FE7iTy4Tiv+4pApMGGxbTHp7Bupi2jtDDbM2+rMkdSzvIktfNgzW1M2/htkE6OhgwbhQmqSvGv/J9FOCTYtSNsPg/Y8qtjvsiIktrenBOSAMYFeiXVlxneWPk5C+vgyhCd0TqD1Alrpf+KzKgyiK7s6PTcLircB6hha06DTlluOuTS5ezZVVCAyqxY1LU1+iKbc6HQmT11zex+XZ5Nd6GdG4UMOl2JUecGGBS9Awbt9QNXWlHvigWP3MzGsBWOdoIj0vHGucfrQ9m8NBvQkocL0BCMDgW3OakTw4zlOU1BuKguWRf3xBRr1q78GAtWrN152iuVQvI3/J/AHQm/aaOz3ECa6vgR/Cwpbt7uA3RHKCyXa6+rYG+lbn2cEzRQva5Be9EbFJWtVAUhxo34KTpsUML+pzBQSuCl1mK9Az/ForOfFwxnR+X3YjSoAsPUEkIfMypY7uJsLaatiQ9KrTqBJqi6Iyh4P6+pzTd3KPpbLJweN4Bk0HdgoPWUG9XLOVmUbLggGthZiV3254jO5Rurnb2RjKT31jzFxQxrLc0OWfJtDTJXzBdZ0BEfMOATFwguB8KZ17VmR7OkpqgpsliVtkzWGQUqkGXykyPKFwqtpMIAy6nKEXSfuLfquemhze4Crr09CI8AHUU1KbMvsnyksWhPaUGm0A8Koy3z5SlcFgyIImbEunv2cCEB7iIpmqwkrhm8X02kon/ FF4VcBb+ 4XB+ihqq4W27Az6HUhWOB9CsRQvjhADx2j0XLt9vEMfT0CA8CBOnFOamYt1pveHkJoDtu7wFspOOgZCBWGVEA9wJavwEE8gZ1DgOHoSkFmFuytysKPZieEpP4wrXpQe0iACU2lK6k1r+GH2MHkDsfO5qEIIrjNIhbNgrQcDCi+ywhIWFVpTERIUXCjlYBNxipr/EilOo3i7+uX+neEgZuEGp0Qe/RGea2JA14fN/ix7ipoQ6CYLQzJTeKs3NlGhduJxBtdHJDB1/k6JE6aoK2LQ9Xwu7vzYxci4II1/pjJlZBtLef6lpSyE3vTQ== 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: On 03/30/23 at 09:06pm, Uladzislau Rezki (Sony) wrote: > Add vm_map_ram()/vm_unmap_ram() test case to our stress test-suite. > > Signed-off-by: Uladzislau Rezki (Sony) > --- > lib/test_vmalloc.c | 37 +++++++++++++++++++++++++++++++++++++ > 1 file changed, 37 insertions(+) > > diff --git a/lib/test_vmalloc.c b/lib/test_vmalloc.c > index cd2bdba6d3ed..1622f3f9ec23 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 +359,41 @@ kvfree_rcu_2_arg_vmalloc_test(void) > return 0; > } > > +static int > +vm_map_ram_test(void) > +{ > + unsigned long nr_allocated; > + unsigned int map_nr_pages; > + unsigned char *v_ptr; > + struct page **pages; > + int i; > + > + map_nr_pages = nr_pages > 0 ? nr_pages:1; > + pages = kmalloc(map_nr_pages * sizeof(struct page), GFP_KERNEL); > + if (!pages) > + return -1; > + > + nr_allocated = alloc_pages_bulk_array(GFP_KERNEL, map_nr_pages, pages); > + if (nr_allocated != map_nr_pages) > + goto cleanup; > + > + /* Run the test loop. */ > + for (i = 0; i < test_loop_count; i++) { > + v_ptr = vm_map_ram(pages, map_nr_pages, NUMA_NO_NODE); > + *v_ptr = 'a'; > + vm_unmap_ram(v_ptr, map_nr_pages); > + } > + > +cleanup: > + for (i = 0; i < nr_allocated; i++) > + __free_page(pages[i]); > + > + kfree(pages); > + > + /* 0 indicates success. */ > + return nr_allocated != map_nr_pages; > +} > + > struct test_case_desc { > const char *test_name; > int (*test_func)(void); > @@ -374,6 +410,7 @@ 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. */ > }; Reviewed-by: Baoquan He