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X-IronPort-AV: E=McAfee;i="6600,9927,10989"; a="24972221" X-IronPort-AV: E=Sophos;i="6.06,172,1705392000"; d="scan'208";a="24972221" 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 01:09:48 -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: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Stat-Signature: gi1qxczdh1zmeb65mz15uotqxhgh48ud X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 2B0E740003 X-HE-Tag: 1708420188-599719 X-HE-Meta: U2FsdGVkX19pmRxoWYpucefAyHmb7S5t2UDfqhqzGcsnoUWwYtL8VDiILRyorr+hVg/3QnZSBOb1Lbi9vW+imTul8isqAJLPf4Jrp3tr8x3xkTogBmD/uLFLUpk+m9QDC/I6x7uQmcJ/BvSViqQmULMCsAKDpaDKy3GCMZjg07oA5YKxJdvyzXy1oi5Et8GUesbuzCQlCZh13Wx6uITNCnJ4I+cvQg7W48I1p5GvnjUzkNK08nyO9QNouzA5Weq8qTIOOAuOnahTmeB8BBoCFI4iTqpoxAc1fMsC2aYBwj3deTTm88u0J7dFCh1Y+vlpEE9CtECV7WnWOwP0g+6M+mOhWSlDCnd35NHpHiQgLhsgrBiaIKzodVD4rYHePpkE4AH3M684s3SIj2xsnRktiacXY6YGcGJ8Nt7C2SajwsT5Gp1SLbandy0bkFRIqZNr9X55aWeyspfPSMMcHpOhNlmpSCJ2mC4v5LFIFnFfVQmFHIloXMScBzbvxJwJq6j3hzorw7MRP7hHkd2ZO1gpdLjlsusHrdcBOKmZ0ey+M0wvmVJXTCqTAccRcRTCk5Lmq6nzMvRPcCWZjAb3Lxo9kszjKoCJKwHO4tZt1MN3twTEPx/qAs3B7YLzbkATBFEUGf0Y8NbWpkqHWpFMeABXWoXL2Uvc5yXoUmR3RovNiC31+vQwJVTQGEroCkdz0HgaIRO6Fmm3OdCxW0WzMFNBl5Dc3nZqZRhw6ccIj78H6BEAxT9ntT6P6Q7DU/07zeS/ToBX2PRx07mzu1bpV1frz1fLLJijeQZetJELpeKipDxfUJDEHWWbpPX6i9pNwX8LqHvv6KNirotVVvCgptvGKT1DOjrrrzcAc74IJaOAsHsBz2tDBpJ7KpI9S+pdIEKL44Mhs4NEd7BQBLCPR3VfCDS0u8PcmDuNrlom/G+G3EBGbsSljBbNUxdajylrh/Z5RIsiQ4m4JUdw3OY7xZx /4RkpOou j/8EQJBWqEfTZzm/s6RwcizDJ30No+lKGFzPlRkxufVB9HNgii1QNtedlBm4fXzDHXem0tDb+ajtVtFsdE8Usg1Scu4GwIss/zazMWykStObiTizpDW/aaxnQZZzI6hHXNtLcP99vZbW9PGieMODu948qgw== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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.