Message ID | 20190927234008.11513-11-leonardo@linux.ibm.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <SRS0=VA16=XW=kvack.org=owner-linux-mm@kernel.org> Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6C58413B1 for <patchwork-linux-mm@patchwork.kernel.org>; Fri, 27 Sep 2019 23:41:19 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 41CC121655 for <patchwork-linux-mm@patchwork.kernel.org>; Fri, 27 Sep 2019 23:41:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 41CC121655 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id ED81C8E000F; Fri, 27 Sep 2019 19:41:17 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id E0E638E0009; Fri, 27 Sep 2019 19:41:17 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C619A8E000F; Fri, 27 Sep 2019 19:41:17 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0247.hostedemail.com [216.40.44.247]) by kanga.kvack.org (Postfix) with ESMTP id 9B9418E0009 for <linux-mm@kvack.org>; Fri, 27 Sep 2019 19:41:17 -0400 (EDT) Received: from smtpin23.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with SMTP id 45859180AD803 for <linux-mm@kvack.org>; Fri, 27 Sep 2019 23:41:17 +0000 (UTC) X-FDA: 75982324194.23.grain50_627c58839563b X-Spam-Summary: 2,0,0,7a1db1d44ad1f03c,d41d8cd98f00b204,leonardo@linux.ibm.com,:linuxppc-dev@lists.ozlabs.org:linux-kernel@vger.kernel.org:kvm-ppc@vger.kernel.org:linux-arch@vger.kernel.org::leonardo@linux.ibm.com:benh@kernel.crashing.org:paulus@samba.org:mpe@ellerman.id.au:arnd@arndb.de:aneesh.kumar@linux.ibm.com:christophe.leroy@c-s.fr:akpm@linux-foundation.org:dan.j.williams@intel.com:npiggin@gmail.com:mahesh@linux.vnet.ibm.com:allison@lohutok.net:tglx@linutronix.de:ganeshgr@linux.ibm.com:rppt@linux.ibm.com:yuehaibing@huawei.com:gregkh@linuxfoundation.org:ira.weiny@intel.com:jgg@ziepe.ca:jhubbard@nvidia.com:keith.busch@intel.com,RULES_HIT:41:355:379:541:800:960:973:988:989:1260:1261:1311:1314:1345:1359:1437:1515:1535:1541:1711:1714:1730:1747:1777:1792:1981:2194:2199:2393:2559:2562:3138:3139:3140:3141:3142:3350:3867:4321:5007:6261:6642:6742:6743:10004:11026:11473:11657:11658:11914:12043:12048:12296:12297:12438:12555:12895:12986:13069:13255:13311:13357:13894:14096:14181:1438 4:14394: X-HE-Tag: grain50_627c58839563b X-Filterd-Recvd-Size: 5317 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by imf06.hostedemail.com (Postfix) with ESMTP for <linux-mm@kvack.org>; Fri, 27 Sep 2019 23:41:16 +0000 (UTC) Received: from pps.filterd (m0098393.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x8RNbX0r012541; Fri, 27 Sep 2019 19:41:06 -0400 Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 2v9u0p9n89-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 27 Sep 2019 19:41:06 -0400 Received: from m0098393.ppops.net (m0098393.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.27/8.16.0.27) with SMTP id x8RNf5EF017839; Fri, 27 Sep 2019 19:41:05 -0400 Received: from ppma03dal.us.ibm.com (b.bd.3ea9.ip4.static.sl-reverse.com [169.62.189.11]) by mx0a-001b2d01.pphosted.com with ESMTP id 2v9u0p9n7x-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 27 Sep 2019 19:41:05 -0400 Received: from pps.filterd (ppma03dal.us.ibm.com [127.0.0.1]) by ppma03dal.us.ibm.com (8.16.0.27/8.16.0.27) with SMTP id x8RNeO2o023852; Fri, 27 Sep 2019 23:41:04 GMT Received: from b01cxnp23033.gho.pok.ibm.com (b01cxnp23033.gho.pok.ibm.com [9.57.198.28]) by ppma03dal.us.ibm.com with ESMTP id 2v5bg8b72g-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 27 Sep 2019 23:41:04 +0000 Received: from b01ledav004.gho.pok.ibm.com (b01ledav004.gho.pok.ibm.com [9.57.199.109]) by b01cxnp23033.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x8RNf3UT36307346 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 27 Sep 2019 23:41:03 GMT Received: from b01ledav004.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 990F9112067; Fri, 27 Sep 2019 23:41:03 +0000 (GMT) Received: from b01ledav004.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id EC7D4112063; Fri, 27 Sep 2019 23:40:59 +0000 (GMT) Received: from LeoBras.aus.stglabs.ibm.com (unknown [9.18.235.58]) by b01ledav004.gho.pok.ibm.com (Postfix) with ESMTP; Fri, 27 Sep 2019 23:40:59 +0000 (GMT) From: Leonardo Bras <leonardo@linux.ibm.com> To: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, kvm-ppc@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org Cc: Leonardo Bras <leonardo@linux.ibm.com>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, Michael Ellerman <mpe@ellerman.id.au>, Arnd Bergmann <arnd@arndb.de>, "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>, Christophe Leroy <christophe.leroy@c-s.fr>, Andrew Morton <akpm@linux-foundation.org>, Dan Williams <dan.j.williams@intel.com>, Nicholas Piggin <npiggin@gmail.com>, Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>, Allison Randal <allison@lohutok.net>, Thomas Gleixner <tglx@linutronix.de>, Ganesh Goudar <ganeshgr@linux.ibm.com>, Mike Rapoport <rppt@linux.ibm.com>, YueHaibing <yuehaibing@huawei.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Ira Weiny <ira.weiny@intel.com>, Jason Gunthorpe <jgg@ziepe.ca>, John Hubbard <jhubbard@nvidia.com>, Keith Busch <keith.busch@intel.com> Subject: [PATCH v4 10/11] powerpc/book3s_64: Enables counting method to monitor lockless pgtbl walk Date: Fri, 27 Sep 2019 20:40:07 -0300 Message-Id: <20190927234008.11513-11-leonardo@linux.ibm.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190927234008.11513-1-leonardo@linux.ibm.com> References: <20190927234008.11513-1-leonardo@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-09-27_09:,, 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=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1909270205 Content-Transfer-Encoding: quoted-printable 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: <linux-mm.kvack.org> |
Series |
Introduces new count-based method for monitoring lockless pagetable walks
|
expand
|
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index 8308f32e9782..eb9b26a4a483 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -1370,5 +1370,10 @@ static inline bool pgd_is_leaf(pgd_t pgd) return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PTE)); } +#define __HAVE_ARCH_LOCKLESS_PGTBL_WALK_COUNTER +void start_lockless_pgtbl_walk(struct mm_struct *mm); +void end_lockless_pgtbl_walk(struct mm_struct *mm); +int running_lockless_pgtbl_walk(struct mm_struct *mm); + #endif /* __ASSEMBLY__ */ #endif /* _ASM_POWERPC_BOOK3S_64_PGTABLE_H_ */
Enables count-based monitoring method for lockless pagetable walks on PowerPC book3s_64. Other architectures/platforms fallback to using generic dummy functions. Signed-off-by: Leonardo Bras <leonardo@linux.ibm.com> --- arch/powerpc/include/asm/book3s/64/pgtable.h | 5 +++++ 1 file changed, 5 insertions(+)