From patchwork Sun Dec 3 19:32:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yury Norov X-Patchwork-Id: 13477454 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="IrkrSono" Received: from mail-yw1-x1133.google.com (mail-yw1-x1133.google.com [IPv6:2607:f8b0:4864:20::1133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 29F12E3; Sun, 3 Dec 2023 11:33:12 -0800 (PST) Received: by mail-yw1-x1133.google.com with SMTP id 00721157ae682-5d81c24cef2so5020787b3.2; Sun, 03 Dec 2023 11:33:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1701631990; x=1702236790; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=HmvgTcSgTSYSGQ9OhXSlfMgozAivgkoJ1Cnrtk56obw=; b=IrkrSonodykAw39/+MwjHWDI+97PidIKPur7BWdzSboCV3J0UP6PxT855kFC9amrxI OM8mqFyqllnsGlUhKf5bKW1gYNULqCbot1URgDnRnJKbkRgFQrbP/gHmi+wIDLB+fDV2 PpbYzHEqkGn8hNl07gl2gaJfsNeS1V+6T99ZDEuRf+Q2nfEIJB7eJ0mIgFuI3/deLTmR UMZmQmVq192L4Ul1o/vqlkDsAKgKoVmqw1/rsIwIhAolyhgDgx7qFYx57jo/nu3NQUKo yPKItUoGYvHz3x/5cEag9UviH9o/znXzNC7drtll9WITH971VPhJ+Uu6RP3s8KqK3Dwu uvPA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701631990; x=1702236790; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=HmvgTcSgTSYSGQ9OhXSlfMgozAivgkoJ1Cnrtk56obw=; b=fTlgyy7np1MoKnXeEs+c9Gx7CwXzrSmE5FBgPgP6QYzBBQa6augtSGdxix+1aqBn8h oCf4R+Ifm/OWAmyW8J5wg0JJikad64rOE8QEoE/VewCg1b+1Z+Wt88tuMUywFSw//193 Ccr2exGQSYH+xsFumHdSPDLiLs7nYkeTij8KZpWkFShEspuN6cIBzTMBlpst0CkOX5Uq eozFxOX4QjBtqffNFjqSDrkTe5o0/I4wgwEauZHF6lG4XRCj9iEXZYwWBu3sGfc5lWvZ JkZxs0h60D1ntQ+6mdJBg+87BHrVM6yEusrI+V/qsNVcP7ts157ka8U0trOqjHrigrYm Zinw== X-Gm-Message-State: AOJu0Yz752gRRgMoD6y32JobW8IoYPB6y0OdTfpG9YHNZ1Ii60is2MpQ vcBvR/nNB+sV9AxqKfPSk7TA929CmPp9CQ== X-Google-Smtp-Source: AGHT+IH9dK5SBG1KTg95TkMNRGGX2LRFyEvXVyFKexhpvkq8MjiOjaHQrHY4kI3iqaUaVcCxIhY+og== X-Received: by 2002:a05:690c:c11:b0:5d1:6370:b2cf with SMTP id cl17-20020a05690c0c1100b005d16370b2cfmr2746902ywb.29.1701631990366; Sun, 03 Dec 2023 11:33:10 -0800 (PST) Received: from localhost ([2601:344:8301:57f0:cb98:c3e:57c:8191]) by smtp.gmail.com with ESMTPSA id d143-20020a814f95000000b005d795822dc7sm1042135ywb.35.2023.12.03.11.33.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 03 Dec 2023 11:33:09 -0800 (PST) From: Yury Norov To: linux-kernel@vger.kernel.org, "David S. Miller" , "H. Peter Anvin" , "James E.J. Bottomley" , "K. Y. Srinivasan" , "Md. Haris Iqbal" , Akinobu Mita , Andrew Morton , Bjorn Andersson , Borislav Petkov , Chaitanya Kulkarni , Christian Brauner , Damien Le Moal , Dave Hansen , David Disseldorp , Edward Cree , Eric Dumazet , Fenghua Yu , Geert Uytterhoeven , Greg Kroah-Hartman , Gregory Greenman , Hans Verkuil , Hans de Goede , Hugh Dickins , Ingo Molnar , Jakub Kicinski , Jaroslav Kysela , Jason Gunthorpe , Jens Axboe , Jiri Pirko , Jiri Slaby , Kalle Valo , Karsten Graul , Karsten Keil , Kees Cook , Leon Romanovsky , Mark Rutland , Martin Habets , Mauro Carvalho Chehab , Michael Ellerman , Michal Simek , Nicholas Piggin , Oliver Neukum , Paolo Abeni , Paolo Bonzini , Peter Zijlstra , Ping-Ke Shih , Rich Felker , Rob Herring , Robin Murphy , Sean Christopherson , Shuai Xue , Stanislaw Gruszka , Steven Rostedt , Thomas Bogendoerfer , Thomas Gleixner , Valentin Schneider , Vitaly Kuznetsov , Wenjia Zhang , Will Deacon , Yoshinori Sato , GR-QLogic-Storage-Upstream@marvell.com, alsa-devel@alsa-project.org, ath10k@lists.infradead.org, dmaengine@vger.kernel.org, iommu@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-block@vger.kernel.org, linux-bluetooth@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-media@vger.kernel.org, linux-mips@vger.kernel.org, linux-net-drivers@amd.com, linux-pci@vger.kernel.org, linux-rdma@vger.kernel.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, linux-serial@vger.kernel.org, linux-sh@vger.kernel.org, linux-sound@vger.kernel.org, linux-usb@vger.kernel.org, linux-wireless@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, mpi3mr-linuxdrv.pdl@broadcom.com, netdev@vger.kernel.org, sparclinux@vger.kernel.org, x86@kernel.org Cc: Yury Norov , Jan Kara , Mirsad Todorovac , Matthew Wilcox , Rasmus Villemoes , Andy Shevchenko , Maxim Kuvyrkov , Alexey Klimov , Bart Van Assche , Sergey Shtylyov Subject: [PATCH v2 02/35] lib/find: add test for atomic find_bit() ops Date: Sun, 3 Dec 2023 11:32:34 -0800 Message-Id: <20231203193307.542794-1-yury.norov@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20231203192422.539300-1-yury.norov@gmail.com> References: <20231203192422.539300-1-yury.norov@gmail.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add basic functionality test for new API. Signed-off-by: Yury Norov --- lib/test_bitmap.c | 61 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c index 65f22c2578b0..277e1ca9fd28 100644 --- a/lib/test_bitmap.c +++ b/lib/test_bitmap.c @@ -221,6 +221,65 @@ static void __init test_zero_clear(void) expect_eq_pbl("", bmap, 1024); } +static void __init test_find_and_bit(void) +{ + unsigned long w, w_part, bit, cnt = 0; + DECLARE_BITMAP(bmap, EXP1_IN_BITS); + + /* + * Test find_and_clear{_next}_bit() and corresponding + * iterators + */ + bitmap_copy(bmap, exp1, EXP1_IN_BITS); + w = bitmap_weight(bmap, EXP1_IN_BITS); + + for_each_test_and_clear_bit(bit, bmap, EXP1_IN_BITS) + cnt++; + + expect_eq_uint(w, cnt); + expect_eq_uint(0, bitmap_weight(bmap, EXP1_IN_BITS)); + + bitmap_copy(bmap, exp1, EXP1_IN_BITS); + w = bitmap_weight(bmap, EXP1_IN_BITS); + w_part = bitmap_weight(bmap, EXP1_IN_BITS / 3); + + cnt = 0; + bit = EXP1_IN_BITS / 3; + for_each_test_and_clear_bit_from(bit, bmap, EXP1_IN_BITS) + cnt++; + + expect_eq_uint(bitmap_weight(bmap, EXP1_IN_BITS), bitmap_weight(bmap, EXP1_IN_BITS / 3)); + expect_eq_uint(w_part, bitmap_weight(bmap, EXP1_IN_BITS)); + expect_eq_uint(w - w_part, cnt); + + /* + * Test find_and_set{_next}_bit() and corresponding + * iterators + */ + bitmap_copy(bmap, exp1, EXP1_IN_BITS); + w = bitmap_weight(bmap, EXP1_IN_BITS); + cnt = 0; + + for_each_test_and_set_bit(bit, bmap, EXP1_IN_BITS) + cnt++; + + expect_eq_uint(EXP1_IN_BITS - w, cnt); + expect_eq_uint(EXP1_IN_BITS, bitmap_weight(bmap, EXP1_IN_BITS)); + + bitmap_copy(bmap, exp1, EXP1_IN_BITS); + w = bitmap_weight(bmap, EXP1_IN_BITS); + w_part = bitmap_weight(bmap, EXP1_IN_BITS / 3); + cnt = 0; + + bit = EXP1_IN_BITS / 3; + for_each_test_and_set_bit_from(bit, bmap, EXP1_IN_BITS) + cnt++; + + expect_eq_uint(EXP1_IN_BITS - bitmap_weight(bmap, EXP1_IN_BITS), + EXP1_IN_BITS / 3 - bitmap_weight(bmap, EXP1_IN_BITS / 3)); + expect_eq_uint(EXP1_IN_BITS * 2 / 3 - (w - w_part), cnt); +} + static void __init test_find_nth_bit(void) { unsigned long b, bit, cnt = 0; @@ -1273,6 +1332,8 @@ static void __init selftest(void) test_for_each_clear_bitrange_from(); test_for_each_set_clump8(); test_for_each_set_bit_wrap(); + + test_find_and_bit(); } KSTM_MODULE_LOADERS(test_bitmap);