From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C1229C433EF for ; Fri, 1 Oct 2021 17:27:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A3CFB61A54 for ; Fri, 1 Oct 2021 17:27:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1355384AbhJAR3O (ORCPT ); Fri, 1 Oct 2021 13:29:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39304 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1355325AbhJAR3N (ORCPT ); Fri, 1 Oct 2021 13:29:13 -0400 Received: from mail-pj1-x102f.google.com (mail-pj1-x102f.google.com [IPv6:2607:f8b0:4864:20::102f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 87575C06177D for ; Fri, 1 Oct 2021 10:27:29 -0700 (PDT) Received: by mail-pj1-x102f.google.com with SMTP id v19so7018977pjh.2 for ; Fri, 01 Oct 2021 10:27:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=hRBnsHOhY3RkJJ55kOa8agH19+hjBWLoI6XvdfNnFos=; b=Xs8sPOBzwVsKgvPcUPiIaBbVcEdNF4tbxTxnktn84mfih9aV47w/so/YleDQRpQAJC /CnQ0q8FsP8iuXeeKHZvCHmNYJ1elS0RvFHMO8qFCQ2+Wvvob7KstVA6mNdT56h2JxQO 2EQ/LxBYwe24CZb5TPhKBLeMueOniJs8UV69c6BTFU8s23AD18pgmko8c6Aq39EvG1Sx 9qoV6CK4gt9OCuM/Gijdmi7B+fdWZm5GjA3DD+LQdb18/jwHp2o4fWASpcgMJsnWzbRH s3HqbwISyAlkqWvdSK4/34OC4fhzSGf9i0XpDnWOArFsLEFG1Yp9trTJiXLsOKDBo186 dOeA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=hRBnsHOhY3RkJJ55kOa8agH19+hjBWLoI6XvdfNnFos=; b=5InU0YCWjf/3fQeOYaNsQSyOMfLPBxA/S0Bc9zVLC6YgJDq2AzMU/BMz7qVSEiKpfx nY40FeV3SvsJlvVtzN+6Xw5gSaCHcLhVq1im3i6VmS7MjuaAyHqGbw99DA3PQplS2/lY yF6vmYc0riaW8IegaRa/TT1cGXH42613XmGun0/leP28WmLunxEQ0m4Qr400S3dZiqvW MrVM+f8MuTuXkycZ2vWKj7QkNA5zjQ4DV82DHYApH5nj77SYP0ejj4L9FvGChK3MACpf UIxCxkZThqZk8l128u+PhwhB2UxPrDpEZAdY7NAn1bf5484R1ChBvDLB3E6/OdEBhcr0 zt/Q== X-Gm-Message-State: AOAM530vT8bveu57Tygr+YQCMbz1Tc0Mi178sy40IPCpsRpIr25AbEQ0 tKGr2oFEsdrhbcLvcjVUiEM= X-Google-Smtp-Source: ABdhPJyyXeSOdt74N1gvq+sNdXSJlSUV655jdthXg4d5APRzI8ZT5khDmtWhi+G1pdDi+1VxrxM4qQ== X-Received: by 2002:a17:90a:e7ca:: with SMTP id kb10mr21097288pjb.33.1633109249113; Fri, 01 Oct 2021 10:27:29 -0700 (PDT) Received: from edumazet1.svl.corp.google.com ([2620:15c:2c4:201:63c:b112:55c:f7f4]) by smtp.gmail.com with ESMTPSA id w6sm7243589pfj.179.2021.10.01.10.27.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Oct 2021 10:27:28 -0700 (PDT) From: Eric Dumazet To: Andrew Morton Cc: linux-kernel , linux-mm , Eric Dumazet , Eric Dumazet Subject: [PATCH] mm/vmalloc: make show_numa_info() aware of hugepage mappings Date: Fri, 1 Oct 2021 10:27:25 -0700 Message-Id: <20211001172725.105824-1-eric.dumazet@gmail.com> X-Mailer: git-send-email 2.33.0.800.g4c38ced690-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Eric Dumazet show_numa_info() can be slightly faster, by skipping over hugepages directly. Signed-off-by: Eric Dumazet --- mm/vmalloc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 42219f3d12b567fc64f54cd3e2f1e3398e261a2c..d51f5e1c95b4e01add8b952b6c5e2de2a1139e46 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -3853,6 +3853,7 @@ static void show_numa_info(struct seq_file *m, struct vm_struct *v) { if (IS_ENABLED(CONFIG_NUMA)) { unsigned int nr, *counters = m->private; + unsigned int step = 1U << vm_area_page_order(v); if (!counters) return; @@ -3864,9 +3865,8 @@ static void show_numa_info(struct seq_file *m, struct vm_struct *v) memset(counters, 0, nr_node_ids * sizeof(unsigned int)); - for (nr = 0; nr < v->nr_pages; nr++) - counters[page_to_nid(v->pages[nr])]++; - + for (nr = 0; nr < v->nr_pages; nr += step) + counters[page_to_nid(v->pages[nr])] += step; for_each_node_state(nr, N_HIGH_MEMORY) if (counters[nr]) seq_printf(m, " N%u=%u", nr, counters[nr]); -- 2.33.0.800.g4c38ced690-goog