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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CE47AC5DF60 for ; Thu, 7 Nov 2019 19:14:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B00E421D79 for ; Thu, 7 Nov 2019 19:14:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727815AbfKGTOx (ORCPT ); Thu, 7 Nov 2019 14:14:53 -0500 Received: from mx1.redhat.com ([209.132.183.28]:55378 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727108AbfKGTOx (ORCPT ); Thu, 7 Nov 2019 14:14:53 -0500 Received: from mail-qt1-f197.google.com (mail-qt1-f197.google.com [209.85.160.197]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id D9F5F37F73 for ; Thu, 7 Nov 2019 19:14:52 +0000 (UTC) Received: by mail-qt1-f197.google.com with SMTP id h39so3787643qth.13 for ; Thu, 07 Nov 2019 11:14:52 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=Db1sKYv4li8Fx0mnSJRg6cnhmGpTf7bM9BzTT3nWzCw=; b=ap2KMxrj0v7Mic90RBPgPOGPPxQaxCLcgb4sZuFWTtWEFC8cL5sQy2kRUVKdEK2UC2 PvquAmswYunQ12ltszf1WlrffwqYVYph2m4m3EaWOokekVHZh2m+/JxDQhh5pggwFrOy IGSDpzURglInfp8VOVCj4VybwjF8XjtUiuOwCRYF1bmSibEgI/UvNbRt3L3i005R1JiT mGKy9xgsZWZMMz9BQq+LvubX4bq8JYkB/uxGkklCY+A9TX1OAS3PMJcGECRnyKFacrj0 Xj/82JNDTS9FPNy6vUh+QQ/ozAM+BMecxlBTejrvQ/cJimYyxAaxv4WE8aSyRl8/EItF X5FQ== X-Gm-Message-State: APjAAAWFeOc1ZlbY0SiZN0GA21UA642YaNZgrrv+bf7XFbnfeZugssid bZGYO24IJ3k3sEo6LCuPMu4i43zgUQUCTGrXEMAtzfrdQAZUmMYcIOG7qupm8ScD71jG9t7ULk7 wX8UbAaARBBJzpvv6MZZeMKJA X-Received: by 2002:ac8:22d9:: with SMTP id g25mr5690580qta.238.1573154092087; Thu, 07 Nov 2019 11:14:52 -0800 (PST) X-Google-Smtp-Source: APXvYqz1HSOtXnTHcrA8WP6hedLySfPxynCtPMQPvXsizGqr/cCfleY+sFvwfvz/I1vijoKir9RTqw== X-Received: by 2002:ac8:22d9:: with SMTP id g25mr5690533qta.238.1573154091808; Thu, 07 Nov 2019 11:14:51 -0800 (PST) Received: from labbott-redhat.redhat.com (pool-96-235-39-235.pitbpa.fios.verizon.net. [96.235.39.235]) by smtp.gmail.com with ESMTPSA id l14sm1604372qkj.61.2019.11.07.11.14.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 Nov 2019 11:14:50 -0800 (PST) From: Laura Abbott To: Alexander Potapenko , Kees Cook Cc: Laura Abbott , Christoph Lameter , Nick Desaulniers , Kostya Serebryany , Dmitry Vyukov , Sandeep Patil , Jann Horn , Marco Elver , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrew Morton Subject: [PATCH] lib/test_meminit.c: Add bulk alloc/free tests Date: Thu, 7 Nov 2019 14:14:47 -0500 Message-Id: <20191107191447.23058-1-labbott@redhat.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org kmem_cache_alloc_bulk/kmem_cache_free_bulk are used to make multiple allocations of the same size to avoid the overhead of multiple kmalloc/kfree calls. Extend the kmem_cache tests to make some calls to these APIs. Signed-off-by: Laura Abbott --- lib/test_meminit.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/lib/test_meminit.c b/lib/test_meminit.c index 9729f271d150..20f330948b92 100644 --- a/lib/test_meminit.c +++ b/lib/test_meminit.c @@ -183,6 +183,9 @@ static bool __init check_buf(void *buf, int size, bool want_ctor, return fail; } +#define BULK_SIZE 100 +static void *bulk_array[BULK_SIZE]; + /* * Test kmem_cache with given parameters: * want_ctor - use a constructor; @@ -203,9 +206,24 @@ static int __init do_kmem_cache_size(size_t size, bool want_ctor, want_rcu ? SLAB_TYPESAFE_BY_RCU : 0, want_ctor ? test_ctor : NULL); for (iter = 0; iter < 10; iter++) { + /* Do a test of bulk allocations */ + if (!want_rcu && !want_ctor) { + int ret; + + ret = kmem_cache_alloc_bulk(c, alloc_mask, BULK_SIZE, bulk_array); + if (!ret) { + fail = true; + } else { + int i; + for (i = 0; i < ret; i++) + fail |= check_buf(bulk_array[i], size, want_ctor, want_rcu, want_zero); + kmem_cache_free_bulk(c, ret, bulk_array); + } + } + buf = kmem_cache_alloc(c, alloc_mask); /* Check that buf is zeroed, if it must be. */ - fail = check_buf(buf, size, want_ctor, want_rcu, want_zero); + fail |= check_buf(buf, size, want_ctor, want_rcu, want_zero); fill_with_garbage_skip(buf, size, want_ctor ? CTOR_BYTES : 0); if (!want_rcu) { -- 2.21.0