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Tue, 12 May 2026 07:50:41 -0700 (PDT) From: "WEI-HONG, YE" <1234567weewee457@gmail.com> To: fedorov.nikita@h-partners.com Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, virtualization@lists.linux.dev Subject: Re: [RFC PATCH v3 3/7] hq-spinlock: add contention detection Date: Tue, 12 May 2026 14:49:08 +0000 Message-ID: <20260512144908.610907-1-1234567weewee457@gmail.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20260415164459.2904963-4-fedorov.nikita@h-partners.com> References: <20260415164459.2904963-4-fedorov.nikita@h-partners.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 08E0140005 X-Stat-Signature: r8wf8ru9yijmpemd5xctsjyy7kt58cn4 X-Rspam-User: X-HE-Tag: 1778597442-613063 X-HE-Meta: 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 awztzyOm v3ey6lKqtcU9iZRJPJygtN1botefPNFmwyes4o8BpX/rC/YGAWg8UyoFxJ0rpbNtsUTt6XA5Ea4uq/Hkfvqo0RreG37Fp9cdLgSXR64eClKFWBzPjgUekUo/km2SsNha70vp8tJBkx1CvOY+B6KA8ePNS/3PsQC31zVhtjoCVaV0c01kjEDTMLOjUf0RNJAV2jqvYCBul6mcrShXpLTESqTzXN1rihKDCF9xBdtKo0qiGrNrIuVZGJyFXDboyPge8mDzBsBkXTGyQx2zELTpWmGKH/+4qpDPXir3REoOfMFCB0Wu3ANfyLPH2gqdTneSaNh2UTudpHQpM9iVhpoPcXI0EFMv4i68R+x+dodTnAjwzAdK5Jq5mQNo1/7gZUChyg0zw5FfuUEvkAue5G/slPb2iAR9IreH/o1NkmxQHJtbOAx/dIjCoJEyoU319D2um/yD1QGrbuyi66a6znlbuYkPQHrLocuJ7Hs2f Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi, I may be missing something, but this patch adds `update_counters_qspinlock()` for remote handoff accounting. I tried commenting it out locally, and the kernel still built successfully with `CONFIG_HQSPINLOCKS=y` and `CONFIG_HQSPINLOCKS_DEBUG=y`. I also could not find a call site for it in the series, so it looks like this helper may currently be unreferenced. Is it still needed, or was the call site possibly missed in this RFC version? Cheers, Hong