From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B05CBC6FD1D for ; Mon, 27 Mar 2023 20:02:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229685AbjC0UCw (ORCPT ); Mon, 27 Mar 2023 16:02:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55998 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229456AbjC0UCv (ORCPT ); Mon, 27 Mar 2023 16:02:51 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B6071B1 for ; Mon, 27 Mar 2023 13:02:50 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 4F0F9614C6 for ; Mon, 27 Mar 2023 20:02:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A37EEC433EF; Mon, 27 Mar 2023 20:02:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1679947369; bh=9MApme3QE04m+pS/IF5wuEMk9EJ/1OcgAbKlkNn7NKU=; h=Date:To:From:Subject:From; b=u8v5Rsv9c6oKSBP5O4oS2Nfv4yroED+RhJFozjS5ctRo8sieUCUKg+vDeWiBBa3rO RP2gKo6wd/ufHALNlXjjKq1jw708uahybDYe3sPP8b3qNMkJSEg/s/duUBVAwskCud 2ZkF5GSKwSZ9Xwvxda0lNCnImVAoOcOimNFYdXJ4= Date: Mon, 27 Mar 2023 13:02:49 -0700 To: mm-commits@vger.kernel.org, willy@infradead.org, oleksiy.avramchenko@sony.com, lstoakes@gmail.com, hch@infradead.org, david@fromorbit.com, bhe@redhat.com, urezki@gmail.com, akpm@linux-foundation.org From: Andrew Morton Subject: + lib-test_vmallocc-add-vm_map_ram-vm_unmap_ram-test-case.patch added to mm-unstable branch Message-Id: <20230327200249.A37EEC433EF@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The patch titled Subject: lib/test_vmalloc.c: add vm_map_ram()/vm_unmap_ram() test case has been added to the -mm mm-unstable branch. Its filename is lib-test_vmallocc-add-vm_map_ram-vm_unmap_ram-test-case.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/lib-test_vmallocc-add-vm_map_ram-vm_unmap_ram-test-case.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: "Uladzislau Rezki (Sony)" Subject: lib/test_vmalloc.c: add vm_map_ram()/vm_unmap_ram() test case Date: Mon, 27 Mar 2023 19:01:26 +0200 Add vm_map_ram()/vm_unmap_ram() test case to our stress test-suite. Link: https://lkml.kernel.org/r/20230327170126.406044-2-urezki@gmail.com Signed-off-by: Uladzislau Rezki (Sony) Cc: Baoquan He Cc: Christoph Hellwig Cc: Dave Chinner Cc: Lorenzo Stoakes Cc: Matthew Wilcox (Oracle) Cc: Oleksiy Avramchenko Signed-off-by: Andrew Morton --- lib/test_vmalloc.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) --- a/lib/test_vmalloc.c~lib-test_vmallocc-add-vm_map_ram-vm_unmap_ram-test-case +++ a/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_a { "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. */ }; _ Patches currently in -mm which might be from urezki@gmail.com are mm-vmalloc-remove-a-global-vmap_blocks-xarray.patch lib-test_vmallocc-add-vm_map_ram-vm_unmap_ram-test-case.patch