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Tue, 13 Oct 2020 23:51:52 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9337C21D81; Tue, 13 Oct 2020 23:51:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1602633111; bh=Bt1wofAOZG5357ODR7cfgLhSFUlCFFMxMkjLjY1Z/4E=; h=Date:From:To:Subject:In-Reply-To:From; b=WpmOp3HT2QLsJXgIiL/rzc6XEwBhmLHV/zFR2XLghVAFPXC8gWhzlaUpmRCx9uFBk 4qwJyc/VAJMLAvJh+DbEM2tVwuFi8c6b7KGMTA9+qnkha54AENvIvzfjWbfXvD9on1 zA7oW2F6rQc0xIR2CL70KeYyFnlo5shNm96vQpes= Date: Tue, 13 Oct 2020 16:51:51 -0700 From: Andrew Morton To: akpm@linux-foundation.org, ira.weiny@intel.com, jhubbard@nvidia.com, keith.busch@intel.com, kirill.shutemov@linux.intel.com, linux-mm@kvack.org, mm-commits@vger.kernel.org, song.bao.hua@hisilicon.com, torvalds@linux-foundation.org Subject: [patch 064/181] mm/gup_benchmark: update the documentation in Kconfig Message-ID: <20201013235151.1uV1MoXWp%akpm@linux-foundation.org> In-Reply-To: <20201013164658.3bfd96cc224d8923e66a9f4e@linux-foundation.org> User-Agent: s-nail v14.8.16 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: From: Barry Song Subject: mm/gup_benchmark: update the documentation in Kconfig In the beginning, mm/gup_benchmark.c supported get_user_pages_fast() only, but right now, it supports the benchmarking of a couple of get_user_pages() related calls like: * get_user_pages_fast() * get_user_pages() * pin_user_pages_fast() * pin_user_pages() The documentation is confusing and needs update. Link: https://lkml.kernel.org/r/20200821032546.19992-1-song.bao.hua@hisilicon.com Signed-off-by: Barry Song Cc: John Hubbard Cc: Keith Busch Cc: Ira Weiny Cc: Kirill A. Shutemov Signed-off-by: Andrew Morton --- mm/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/mm/Kconfig~mm-gup_benchmark-update-the-documentation-in-kconfig +++ a/mm/Kconfig @@ -831,10 +831,10 @@ config PERCPU_STATS be used to help understand percpu memory usage. config GUP_BENCHMARK - bool "Enable infrastructure for get_user_pages_fast() benchmarking" + bool "Enable infrastructure for get_user_pages() and related calls benchmarking" help Provides /sys/kernel/debug/gup_benchmark that helps with testing - performance of get_user_pages_fast(). + performance of get_user_pages() and related calls. See tools/testing/selftests/vm/gup_benchmark.c