From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) (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 D2CED612E7 for ; Tue, 20 Feb 2024 09:09:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708420190; cv=none; b=Ty03OZu5mPvMRu1Y4ngCj0lTb3h0dXkyzBG6M8qpTY5KqaPfwTIsQPK0FqH29Mdxb4B6Wvkhy4NK3XenMHyan3F9UZZV6oSHDtMsV4iPV07pvalswLkJZxgCCX0jOnwLFqJ7o3YNPq6miA24RC22ejNkm7cPmV4M3RfnqGcW7xU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708420190; c=relaxed/simple; bh=UZm4U+dAIR8HwmwBvV5EmxR9EJsRl0ZGSS0nEGfJIyk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=BGyCnYsMC0g/mRt8sX1Qlkf2WQMvsvCeHxmcU842Wu8ttFBIDdw3rjd7jLkKJqJYbRIcwaKrj/TcvXWXfFs2qDw2PZ9QixWXzPmx61SvrCNxiPONUoBpzXuq7dQNS6Q8k5G/FbcENT6u+QRkTAwQojS7xcwqwcH9nzUAJ0Io6t0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=ZhTz2CCy; arc=none smtp.client-ip=198.175.65.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="ZhTz2CCy" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1708420189; x=1739956189; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=UZm4U+dAIR8HwmwBvV5EmxR9EJsRl0ZGSS0nEGfJIyk=; b=ZhTz2CCynYn1wcYFYPF3TK1WmdqsRrWdcS6YqFANHMehlLMT5Wfr3x+f 35wjx0QyYx9fzxU7dEVYl1SrA9iWHpCVP5KAaORUSIDhVZQ1RCQiKsimF 9NIZnuHi9h9RblB8ybdUQ/6pbCP6U/LnnTtpvddykOj119oT/LC/4zs7s zdrS1QTiOYWn9GihHRYc/3dEjPYIVhX6eNJFPOhEA/xed7JHKksoqn8nY efwGpt7d3bOf8uLsm1FaJUi4VQdxCQ13CbrL8HQCpo6pFpvzXleqbbMqu ZuR6XOZoDwnKxf6XkHNQmEbgj4hdwtjQsQJUzGRCU9pnlkpZRxzayTrjz g==; X-IronPort-AV: E=McAfee;i="6600,9927,10989"; a="24972222" X-IronPort-AV: E=Sophos;i="6.06,172,1705392000"; d="scan'208";a="24972222" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Feb 2024 01:09:49 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.06,172,1705392000"; d="scan'208";a="9334937" Received: from linux-pnp-server-09.sh.intel.com ([10.239.176.190]) by fmviesa004.fm.intel.com with ESMTP; 20 Feb 2024 01:09:45 -0800 From: rulinhuang To: urezki@gmail.com Cc: akpm@linux-foundation.org, colin.king@intel.com, hch@infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lstoakes@gmail.com, rulin.huang@intel.com, tim.c.chen@intel.com, zhiguo.zhou@intel.com, wangyang.guo@intel.com, tianyou.li@intel.com Subject: Re: [PATCH] mm/vmalloc: lock contention optimization under multi-threading Date: Tue, 20 Feb 2024 04:12:40 -0500 Message-ID: <20240220091240.3316840-1-rulin.huang@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi Rezki, we have submitted patch v2 to avoid the partial initialization issue of vm's members and separated insert_vmap_area() from alloc_vmap_area() so that setup_vmalloc_vm() has no need to require lock protection. We have also verified the improvement of 6.3% at 160 vcpu on intel icelake platform with this patch. Thank you for your patience.