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b=FVPx5m0L1hyhYm0Hbjq+0uv7+M1HRG1jVxO7m33fRsj2a1SrzbrkX7FJ44oSSGjWC t6ADCCDh636qoFvgkE+TGWRks8WuFLf8xw+4TKQdpnERoJRIwtL5xdFZeONkSQOGFh S2UPLTibuD1Uxurh+XTaqj3GH6cYUOUWtVX4+NvU= Date: Thu, 10 Oct 2024 14:05:50 -0700 From: Andrew Morton To: alexjlzheng@gmail.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, alexjlzheng@tencent.com, MengEn Sun Subject: Re: [PATCH] mm: add pcp high_min high_max to proc zoneinfo Message-Id: <20241010140550.bc083631920e64ab9642101f@linux-foundation.org> In-Reply-To: <20241010120935.656619-1-mengensun@tencent.com> References: <20241010120935.656619-1-mengensun@tencent.com> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam03 X-Rspam-User: X-Rspamd-Queue-Id: C97E14000D X-Stat-Signature: h195sigdoc93t5ywrsrj5yjxp6nxon89 X-HE-Tag: 1728594350-333380 X-HE-Meta: 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 TvR4pzXO qWf4ffDQqQYF7Nqc9ZhXRYJ08yhOk76LRQCEu6Gg2pf63Q26SX1T7mKq58xhN7mU2jHu0j8cWH+lw30knvqXkm5eQpxVJ9YwMuNyJHbQY1NExhuBuclDjjJnaQMA/YFOzYD7kMgNpR/W2cVG3HL5IcLGZ9bGYZ/q4vGfw2NC1Sj5TFGxbeBY6HpvcpJA4G+s53EFiaIrJpubTLIv92X6bgUVka+LWXSx6CP9ob4b/Gl0YlI1zE1OdRwyVGmU5CeZ68IjiOOvDF/djHBv7+l/emIO9edcOcG6NOk4K7mPDjejWKMWdf273vKeV9agQzQuATg1LAN48+63s7og1oe94FYGTFA== 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: On Thu, 10 Oct 2024 20:09:36 +0800 alexjlzheng@gmail.com wrote: > From: MengEn Sun > > when we do not config percpu_pagelist_high_fraction the kernel > compute the pcp high_min/max by itself, which may be not easy > to tell the really high_min/max. > > we output the pcp high_min/max to the zoneinfo > Fair enough. I tuned the changelog a bit: : When we do not set percpu_pagelist_high_fraction the kernel will compute : the pcp high_min/max by itself, which makes it hard to determine the : current high_min/max values. : : So output the pcp high_min/max values to /proc/zoneinfo.