Message ID | 20210428153542.2814175-71-Liam.Howlett@Oracle.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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Wed, 28 Apr 2021 15:37:22 +0000 Received: from MWHPR10MB1582.namprd10.prod.outlook.com ([fe80::353a:1802:6e91:1811]) by MWHPR10MB1582.namprd10.prod.outlook.com ([fe80::353a:1802:6e91:1811%8]) with mapi id 15.20.4065.027; Wed, 28 Apr 2021 15:37:22 +0000 From: Liam Howlett <liam.howlett@oracle.com> To: "maple-tree@lists.infradead.org" <maple-tree@lists.infradead.org>, "linux-mm@kvack.org" <linux-mm@kvack.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Andrew Morton <akpm@linux-foundation.org> CC: Song Liu <songliubraving@fb.com>, Davidlohr Bueso <dave@stgolabs.net>, "Paul E . McKenney" <paulmck@kernel.org>, Matthew Wilcox <willy@infradead.org>, Laurent Dufour <ldufour@linux.ibm.com>, David Rientjes <rientjes@google.com>, Axel Rasmussen <axelrasmussen@google.com>, Suren Baghdasaryan <surenb@google.com>, Vlastimil Babka <vbabka@suse.cz>, Rik van Riel <riel@surriel.com>, Peter Zijlstra <peterz@infradead.org>, Michel Lespinasse <walken.cr@gmail.com>, Liam Howlett <liam.howlett@oracle.com> Subject: [PATCH 70/94] kernel/events/core: Use maple tree iterators instead of linked list Thread-Topic: [PATCH 70/94] kernel/events/core: Use maple tree iterators instead of linked list Thread-Index: AQHXPEQ9ib8rc318+UOGu3FUsWsgCA== Date: Wed, 28 Apr 2021 15:36:22 +0000 Message-ID: <20210428153542.2814175-71-Liam.Howlett@Oracle.com> References: <20210428153542.2814175-1-Liam.Howlett@Oracle.com> In-Reply-To: <20210428153542.2814175-1-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; 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Series |
Introducing the Maple Tree
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expand
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diff --git a/kernel/events/core.c b/kernel/events/core.c index f07943183041..73817c6c921e 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -10041,14 +10041,17 @@ static void perf_addr_filter_apply(struct perf_addr_filter *filter, struct perf_addr_filter_range *fr) { struct vm_area_struct *vma; + MA_STATE(mas, &mm->mm_mt, 0, 0); - for (vma = mm->mmap; vma; vma = vma->vm_next) { + rcu_read_lock(); + mas_for_each(&mas, vma, ULONG_MAX) { if (!vma->vm_file) continue; if (perf_addr_filter_vma_adjust(filter, vma, fr)) - return; + break; } + rcu_read_unlock(); } /*
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> --- kernel/events/core.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)