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Mon, 7 May 2018 18:48:26 -0400 Reply-To: prakash.sangappa@oracle.com Subject: Re: [RFC PATCH] Add /proc//numa_vamaps for numa node information References: <1525240686-13335-1-git-send-email-prakash.sangappa@oracle.com> <98e34010-d55a-5f2d-7d98-cba424de2e74@oracle.com> To: Christopher Lameter Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-api@vger.kernel.org, akpm@linux-foundation.org, mhocko@suse.com, kirill.shutemov@linux.intel.com, n-horiguchi@ah.jp.nec.com, drepper@gmail.com, rientjes@google.com From: "prakash.sangappa" Message-ID: Date: Mon, 7 May 2018 15:50:30 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8886 signatures=668698 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1711220000 definitions=main-1805070221 Sender: linux-api-owner@vger.kernel.org X-Mailing-List: linux-api@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On 05/07/2018 07:47 AM, Christopher Lameter wrote: > On Fri, 4 May 2018, Prakash Sangappa wrote: >> Currently 'numa_maps' gives a list of numa nodes, memory is allocated per >> VMA. >> Ex. we get something like from numa_maps. >> >> 04000 N0=1,N2=2 kernelpagesize_KB=4 >> >> First is the start address of a VMA. This VMA could be much larger then 3 4k >> pages. >> It does not say which address in the VMA has the pages mapped. > Not precise. First the address is there as you already said. That is the > virtual address of the beginning of the VMA. What is missing? You need Yes, > each address for each page? Length of the VMA segment? > Physical address? Need numa node information for each virtual address with pages mapped. No need of physical address.