From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AB8JxZqns/24LDQXVCV8bFIVpHTuyHtMQ2X2Lwo52erzvn035pK7o2PyWNhuyb8POBH2t2Baxu8c ARC-Seal: i=1; a=rsa-sha256; t=1524837643; cv=none; d=google.com; s=arc-20160816; b=JvodBBQenalPKGOED+RV1DsBOKjy4Z275FS0ScvtmSOI28yPMlcam0BM1t7l7y+zG0 DbHiv7yCkTIJQIepHRne1CqZYfVfWitmjbOdsVXS+dJAP2e2nIS0amhaS7vFWR6ctNmR 26kxhQ/kVcVxdtNl9x6kevl5WBEdQSQj5MBUfSRBX5mcGqEnqRFSdfyo/XVdt5E1hvjb rciNixpBiwLmVi87pj6jL/W3pTCOwbHVqWvNu6tDwB4aMgWd7CCzFM0IPDPrX9Gq4mY2 Sphdu9lf80AT6BaDBXXx5TXGyskTcDXLlwau7hol9lbDt9yP9MCwNT4uLHHJTHWuv2EJ KPkw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:dmarc-filter:arc-authentication-results; bh=8OuOqsvVnhl1jAUC7UQiK4zCCuqoxJ95257DoZxvGKY=; b=dqh+K89C8VdJb0Cs+dXNt5TEWnHkdETl78WKrDAoE73bHI4m7h0HPOnS+hMZBDIPXp ZUA2DupBCEsgtX+U8RtO2ZVvS/OzOiIxgDSLupOmSZCQVk88BRxFbZNvA0xP68Bim6i1 u5cGk86yBI1WL/uTvvWP7WjB+HkgB+p0T/Dm8QkUtSAjYaZI4NvuqFN9udHh1RNP5w3o rR08do55IWxT6DEFr+g/gK4c8NO6US9mto8+FOwE4GKJTUCHBVL+3lTfhKynR3c0gTGj 27v65pA6oYKY91EGkFEkHW950/1g85TOUsQVMJtXK/9Ed8aDcv6YiuZe6j0fh/+mMCrs VpKA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of srs0=4/0d=hq=linuxfoundation.org=gregkh@kernel.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=SRS0=4/0d=HQ=linuxfoundation.org=gregkh@kernel.org Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of srs0=4/0d=hq=linuxfoundation.org=gregkh@kernel.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=SRS0=4/0d=HQ=linuxfoundation.org=gregkh@kernel.org DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AD20F21895 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=fail smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Chen Feng , Lu bing , Laura Abbott , Greg Hackmann Subject: [PATCH 4.4 04/50] staging: ion : Donnot wakeup kswapd in ion system alloc Date: Fri, 27 Apr 2018 15:58:06 +0200 Message-Id: <20180427135655.905352203@linuxfoundation.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180427135655.623669681@linuxfoundation.org> References: <20180427135655.623669681@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1598908156901734645?= X-GMAIL-MSGID: =?utf-8?q?1598908156901734645?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Chen Feng commit 2ef230531ee171a475fc3ddad5516dd7e09a8a77 upstream. Since ion alloc can be called by userspace,eg gralloc. When it is called frequently, the efficiency of kswapd is to low. And the reclaimed memory is too lower. In this way, the kswapd can use to much cpu resources. With 3.5GB DMA Zone and 0.5 Normal Zone. pgsteal_kswapd_dma 9364140 pgsteal_kswapd_normal 7071043 pgscan_kswapd_dma 10428250 pgscan_kswapd_normal 37840094 With this change the reclaim ratio has greatly improved 18.9% -> 72.5% Signed-off-by: Chen Feng Signed-off-by: Lu bing Reviewed-by: Laura Abbott Cc: Greg Hackmann Signed-off-by: Greg Kroah-Hartman --- drivers/staging/android/ion/ion_system_heap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/staging/android/ion/ion_system_heap.c +++ b/drivers/staging/android/ion/ion_system_heap.c @@ -27,7 +27,7 @@ #include "ion_priv.h" static gfp_t high_order_gfp_flags = (GFP_HIGHUSER | __GFP_ZERO | __GFP_NOWARN | - __GFP_NORETRY) & ~__GFP_DIRECT_RECLAIM; + __GFP_NORETRY) & ~__GFP_RECLAIM; static gfp_t low_order_gfp_flags = (GFP_HIGHUSER | __GFP_ZERO | __GFP_NOWARN); static const unsigned int orders[] = {8, 4, 0}; static const int num_orders = ARRAY_SIZE(orders);