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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 13 Aug 2019 14:43:39 +0100 Received: from d06av24.portsmouth.uk.ibm.com (mk.ibm.com [9.149.105.60]) by b06avi18878370.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x7DDhcuT43712912 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 13 Aug 2019 13:43:38 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 65CAB42042; Tue, 13 Aug 2019 13:43:38 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1E4B842045; Tue, 13 Aug 2019 13:43:37 +0000 (GMT) Received: from rapoport-lnx (unknown [9.148.8.59]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Tue, 13 Aug 2019 13:43:37 +0000 (GMT) Received: by rapoport-lnx (sSMTP sendmail emulation); Tue, 13 Aug 2019 16:43:36 +0300 From: Mike Rapoport To: Andrew Morton Cc: linux-mm@kvack.org, Mike Rapoport Subject: [PATCH] mm: use CPU_BITS_NONE to initialize init_mm.cpu_bitmask Date: Tue, 13 Aug 2019 16:43:35 +0300 X-Mailer: git-send-email 2.7.4 X-TM-AS-GCONF: 00 x-cbid: 19081313-0020-0000-0000-0000035F2C7B X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19081313-0021-0000-0000-000021B4414D Message-Id: <1565703815-8584-1-git-send-email-rppt@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-08-13_05:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=918 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1906280000 definitions=main-1908130145 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: Replace open-coded bitmap array initialization of init_mm.cpu_bitmask with neat CPU_BITS_NONE macro. And, since init_mm.cpu_bitmask is statically set to zero, there is no way to clear it again in start_kernel(). Signed-off-by: Mike Rapoport --- init/main.c | 1 - mm/init-mm.c | 2 +- 2 files changed, 1 insertion(+), 2 deletions(-) diff --git a/init/main.c b/init/main.c index 96f8d5a..e29becc 100644 --- a/init/main.c +++ b/init/main.c @@ -594,7 +594,6 @@ asmlinkage __visible void __init start_kernel(void) page_address_init(); pr_notice("%s", linux_banner); setup_arch(&command_line); - mm_init_cpumask(&init_mm); setup_command_line(command_line); setup_nr_cpu_ids(); setup_per_cpu_areas(); diff --git a/mm/init-mm.c b/mm/init-mm.c index a787a31..fb1e150 100644 --- a/mm/init-mm.c +++ b/mm/init-mm.c @@ -35,6 +35,6 @@ struct mm_struct init_mm = { .arg_lock = __SPIN_LOCK_UNLOCKED(init_mm.arg_lock), .mmlist = LIST_HEAD_INIT(init_mm.mmlist), .user_ns = &init_user_ns, - .cpu_bitmap = { [BITS_TO_LONGS(NR_CPUS)] = 0}, + .cpu_bitmap = CPU_BITS_NONE, INIT_MM_CONTEXT(init_mm) }; -- 2.7.4