From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mta0.migadu.com (out-22.mta0.migadu.com [91.218.175.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EABD3314A73 for ; Mon, 17 Aug 2026 04:37:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.22 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786941434; cv=none; b=sdeX7HP7d06QOjD/kFpI0dl8oXV+G/zd6dTW4niFDWWlrArJj/sQoW3lytH4Nz0FSFtZBoug5P0l5JEwv+4SQe/eFcbUAkVuDA/WQ6vDKfMu/SW5nKMXtoT3NI1NqPySwsoehCpqEfj1NSqxtD86puZcZOLkzWIX8G+AYGXgHyU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786941434; c=relaxed/simple; bh=SQVZWc2/JWe5tCn5l2jWkSOLcNsDOsT2p2+BDwA76P8=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=MrMb8oc3Ju/F9ysZexgdx9l/zUgH8o6VzNfms48os7RZDAJDLA10F9o3+UIiTsRLnWLRpUu5dHo62KL3sHyH1wYuAvVFETv6GkwFkGwucXJOc7VttoxZKVPi8TrJmDKpOuSSRCtugNXA2G6GNl0OdKgFVvf8+ZWit9NQ5VopbWg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=VZXnm9Yq; arc=none smtp.client-ip=91.218.175.22 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="VZXnm9Yq" X-Envelope-To: linux-kernel@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=SQVZWc2/JWe5tCn5l2jWkSOLcNsDOsT2p2+BDwA76P8=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1786941430; v=1; x=1787546230; b=VZXnm9YqJYDISNjsx54ojc8FArPwMrIOscHxbO/wzT8S8mX013hmSk6zI1tVnfJH9JsteqOs oIDQYbIOPZYmKIRIaGj2LQgbxyjYNiProYJd7aF1121ldqjZoeIDYCqGP/sRBPU4sGJnON8m9pt 4nnBnxoHqZ8WPYN3eqSNwEGg= X-Envelope-To: linux-kernel@vger.kernel.org Received: from localhost (2602:fce1:44f:115e::) by smtp.migadu.com with ESMTPS id 988b58362ce64e26; Mon, 17 Aug 2026 04:37:10 +0000 X-Migadu-Flow: FLOW_OUT From: Lance Yang To: nico.pache@linux.dev Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, akpm@linux-foundation.org, david@kernel.org, ljs@kernel.org, ziy@nvidia.com, baolin.wang@linux.alibaba.com, liam@infradead.org, ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org, usama.arif@linux.dev, vbabka@kernel.org, rppt@kernel.org, surenb@google.com, mhocko@suse.com, corbet@lwn.net, skhan@linuxfoundation.org, Lance Yang Subject: Re: [PATCH v4 3/7] mm/khugepaged: introduce a count_collapse_event() helper Date: Mon, 17 Aug 2026 12:37:02 +0800 Message-Id: <20260817043702.83778-1-lance.yang@linux.dev> X-Mailer: git-send-email 2.39.3 (Apple Git-146) In-Reply-To: <20260811-khugepaged_pte_refactor-v4-3-ddac39d61c4a@linux.dev> References: <20260811-khugepaged_pte_refactor-v4-3-ddac39d61c4a@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On Tue, Aug 11, 2026 at 06:48:35AM -0600, Nico Pache (Red Hat) wrote: >Provide a simple helper function to help reduce a often used, and >duplicate pattern across the khugepaged code. > >When collapsing to a PMD we need to record a vm_event and the mTHP_stat >event. When doing mTHP collapse we only update the mTHP stat. > >Reviewed-by: Baolin Wang >Acked-by: David Hildenbrand (Arm) >Acked-by: Usama Arif >Signed-off-by: Nico Pache (Red Hat) >--- Reviewed-by: Lance Yang