From patchwork Fri Apr 26 01:46:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: xu.xin16@zte.com.cn X-Patchwork-Id: 13644061 Received: from mxde.zte.com.cn (mxde.zte.com.cn [209.9.37.143]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C719CEDC; Fri, 26 Apr 2024 01:47:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.9.37.143 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714096077; cv=none; b=dy4CaHeCCEvLMkaZTS2fhWgDGT6Y1yepnYZVvqyjKO7z3Ihd1w8w+PWmHLZ+UvHlE1+AtaDfGoNWfenPPJGRfl2278rkDrSGHJsEtGWC8+QTMGLrMp68umlHYfT/9+p6TxnWXgR8z3bJh6GJ4qJwyxofSMh6J/GBm7YUDJVSL5E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714096077; c=relaxed/simple; bh=nRLNLg/Asrg+hntPItw/WD1R1FN0NMP2xzP/J61TePI=; h=Date:Message-ID:Mime-Version:From:To:Cc:Subject:Content-Type; b=JaZStBomcqUUrOgDNIN+plppsIDO261JmH6ep8j4Eb3VSj8TzNtD5uMyIW9FV2TZFDKzASxcBfHq6HJSycizmpbvDAVSnXenxHzpIQIwP9sXyoZr3DEDi5kwl424sS7PgEnEBWFS1uq//OgfTNl06yzGfo8jdJtEs44edO0348E= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zte.com.cn; spf=pass smtp.mailfrom=zte.com.cn; arc=none smtp.client-ip=209.9.37.143 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zte.com.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=zte.com.cn Received: from mxhk.zte.com.cn (unknown [192.168.250.138]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mxde.zte.com.cn (FangMail) with ESMTPS id 4VQbFp2tPWz4xBV4; Fri, 26 Apr 2024 09:47:42 +0800 (CST) Received: from mxct.zte.com.cn (unknown [192.168.251.13]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mxhk.zte.com.cn (FangMail) with ESMTPS id 4VQbFc4t9xz4xPBZ; Fri, 26 Apr 2024 09:47:32 +0800 (CST) Received: from mse-fl1.zte.com.cn (unknown [10.5.228.132]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mxct.zte.com.cn (FangMail) with ESMTPS id 4VQbF32nhVz50yRx; Fri, 26 Apr 2024 09:47:03 +0800 (CST) Received: from xaxapp01.zte.com.cn ([10.88.99.176]) by mse-fl1.zte.com.cn with SMTP id 43Q1kI9M001841; Fri, 26 Apr 2024 09:46:18 +0800 (+08) (envelope-from xu.xin16@zte.com.cn) Received: from mapi (xaxapp01[null]) by mapi (Zmail) with MAPI id mid32; Fri, 26 Apr 2024 09:46:19 +0800 (CST) Date: Fri, 26 Apr 2024 09:46:19 +0800 (CST) X-Zmail-TransId: 2af9662b076bffffffff86b-1264c X-Mailer: Zmail v1.0 Message-ID: <20240426094619962AxIC6CSpfpJNeiy8HRA9h@zte.com.cn> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 From: To: , Cc: , , Subject: =?utf-8?q?=5BPATCH_linux-next_v2=5D_ksm=3A_add_ksm_involvement_info?= =?utf-8?q?rmation_for_each_process?= X-MAIL: mse-fl1.zte.com.cn 43Q1kI9M001841 X-Fangmail-Anti-Spam-Filtered: true X-Fangmail-MID-QID: 662B07BD.000/4VQbFp2tPWz4xBV4 From: xu xin In /proc//ksm_stat, Add two extra ksm involvement items including MMF_VM_MERGEABLE and MMF_VM_MERGE_ANY. It helps administrators to better know the system's KSM behavior at process level. KSM_mergeable: yes/no whether the process'mm is added by madvise() into the candidate list of KSM or not. KSM_merge_any: yes/no whether the process'mm is added by prctl() into the candidate list of KSM or not, and fully enabled at process level. Changelog ========= v1 -> v2: replace the internal flag names with straightforward strings. * MMF_VM_MERGEABLE -> KSM_mergeable * MMF_VM_MERGE_ANY -> KSM_merge_any Signed-off-by: xu xin --- fs/proc/base.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/proc/base.c b/fs/proc/base.c index 18550c071d71..50e808ffcda4 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -3217,6 +3217,10 @@ static int proc_pid_ksm_stat(struct seq_file *m, struct pid_namespace *ns, seq_printf(m, "ksm_zero_pages %lu\n", mm->ksm_zero_pages); seq_printf(m, "ksm_merging_pages %lu\n", mm->ksm_merging_pages); seq_printf(m, "ksm_process_profit %ld\n", ksm_process_profit(mm)); + seq_printf(m, "KSM_mergeable: %s\n", + test_bit(MMF_VM_MERGEABLE, &mm->flags) ? "yes" : "no"); + seq_printf(m, "KSM_merge_any: %s\n", + test_bit(MMF_VM_MERGE_ANY, &mm->flags) ? "yes" : "no"); mmput(mm); }