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Tue, 17 Aug 2021 15:47:19 +0000 From: Liam Howlett To: "maple-tree@lists.infradead.org" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , Andrew Morton CC: Song Liu , Davidlohr Bueso , "Paul E . McKenney" , Matthew Wilcox , Laurent Dufour , David Rientjes , Axel Rasmussen , Suren Baghdasaryan , Vlastimil Babka , Rik van Riel , Peter Zijlstra , Michel Lespinasse , Liam Howlett Subject: [PATCH v2 25/61] arch/parisc: Remove mmap linked list from kernel/cache Thread-Topic: [PATCH v2 25/61] arch/parisc: Remove mmap linked list from kernel/cache Thread-Index: AQHXk38pjg5uMQOJb0GgZgwCLo6NfQ== Date: Tue, 17 Aug 2021 15:47:19 +0000 Message-ID: <20210817154651.1570984-26-Liam.Howlett@oracle.com> References: <20210817154651.1570984-1-Liam.Howlett@oracle.com> In-Reply-To: <20210817154651.1570984-1-Liam.Howlett@oracle.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.30.2 authentication-results: lists.infradead.org; dkim=none (message not signed) header.d=none;lists.infradead.org; dmarc=none action=none header.from=oracle.com; x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: ad83e384-2778-4cc3-e41f-08d961964c04 x-ms-traffictypediagnostic: DM6PR10MB4236: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:4125; 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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DM6PR10MB4380.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: ad83e384-2778-4cc3-e41f-08d961964c04 X-MS-Exchange-CrossTenant-originalarrivaltime: 17 Aug 2021 15:47:19.7406 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 2QZHs2gia3eXdGry6TxAIwKf8RucaOv1RUyTBanDhMUZEig50l8kYBpHQbl9/ZcI63rU4FFcnl2CbUnpUjzyfQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR10MB4236 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=10079 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 adultscore=0 mlxscore=0 malwarescore=0 mlxlogscore=999 spamscore=0 bulkscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2107140000 definitions=main-2108170097 X-Proofpoint-GUID: ji63WeSqkGYwBSpTLqIaKrbos-MhqxKH X-Proofpoint-ORIG-GUID: ji63WeSqkGYwBSpTLqIaKrbos-MhqxKH Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Liam R. Howlett" Start using the maple tree Signed-off-by: Liam R. Howlett --- arch/parisc/kernel/cache.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c index 39e02227e231..f6316aafba10 100644 --- a/arch/parisc/kernel/cache.c +++ b/arch/parisc/kernel/cache.c @@ -519,9 +519,13 @@ static inline unsigned long mm_total_size(struct mm_st= ruct *mm) { struct vm_area_struct *vma; unsigned long usize =3D 0; + MA_STATE(mas, &mm->mm_mt, 0, 0); =20 - for (vma =3D mm->mmap; vma; vma =3D vma->vm_next) + rcu_read_lock(); + mas_for_each(&mas, vma, ULONG_MAX) usize +=3D vma->vm_end - vma->vm_start; + rcu_read_unlock(); + return usize; } =20 @@ -547,6 +551,7 @@ void flush_cache_mm(struct mm_struct *mm) { struct vm_area_struct *vma; pgd_t *pgd; + MA_STATE(mas, &mm->mm_mt, 0, 0); =20 /* Flushing the whole cache on each cpu takes forever on rp3440, etc. So, avoid it if the mm isn't too big. */ @@ -559,17 +564,20 @@ void flush_cache_mm(struct mm_struct *mm) } =20 if (mm->context =3D=3D mfsp(3)) { - for (vma =3D mm->mmap; vma; vma =3D vma->vm_next) { + rcu_read_lock(); + mas_for_each(&mas, vma, ULONG_MAX) { flush_user_dcache_range_asm(vma->vm_start, vma->vm_end); if (vma->vm_flags & VM_EXEC) flush_user_icache_range_asm(vma->vm_start, vma->vm_end); flush_tlb_range(vma, vma->vm_start, vma->vm_end); } + rcu_read_unlock(); return; } =20 pgd =3D mm->pgd; - for (vma =3D mm->mmap; vma; vma =3D vma->vm_next) { + rcu_read_lock(); + mas_for_each(&mas, vma, ULONG_MAX) { unsigned long addr; =20 for (addr =3D vma->vm_start; addr < vma->vm_end; @@ -589,6 +597,7 @@ void flush_cache_mm(struct mm_struct *mm) } } } + rcu_read_unlock(); } =20 void flush_cache_range(struct vm_area_struct *vma, --=20 2.30.2