From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 425B0128395; Fri, 1 Aug 2025 20:23:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754079824; cv=none; b=qHnEN3CjsSpGM8SBQhbdTBumTFazhDQ2WA5uUkVidpbpwZ6ZKi9e2CYnGKFYJt9xYq2rzQjib6h2GDOlpXJ1423JUgucFLvTRbSodr0Z87pMLCpTYVuxZoOy8jaBRODezh/oCueUdCftIuzCtb1RRs9A+SJqQt02KH7TJeZ7y4E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754079824; c=relaxed/simple; bh=fthQXt9de8h8yk9ZNeBmjvQawcLsRN2+7oIi0y/MFLU=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=poXyyCwjyJtie1otEpDxRKD3bWR65LBZzIZc/DVaOMVMScd1RNRzwQ65PURBMu50JnbEA+04hGpxOc6HA6lJVjDdOmoacDR9Lzyp4c+FOEDmoXwGp4mGPQAxVbYIU7sNy4jobooZ1MEjorympcBrWsGUQ8DAJPml6pTYl5WSmOA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=epPK9Djq; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="epPK9Djq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 52C50C4CEE7; Fri, 1 Aug 2025 20:23:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1754079823; bh=fthQXt9de8h8yk9ZNeBmjvQawcLsRN2+7oIi0y/MFLU=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=epPK9DjqPFPZwUy7ZfxPxj1AefCIJotbQdbjwGdKwB8rR65nFG/3+cTBFsfCXtfwm afyW+OGvVwMBA3F0dgz8acatyXck35cURqwgIYLo18EqjvwCAMPR0ce+gfRFu02aCV 5FirFRi5qIT34G0l/Wj/CELNJMuxNANtaHW4m10ETKqxbH5RYIW15dezK+DEooG5Pp S3xPY6HSLxV6fqpjKOh0CsTtgRmcbLVSaie88gigNxAGfflmrpSDJPn4vWXd9o2/ub vQRidU1k/4rTnjxaqiWL5Qyr7ipYLML0p9GoMgPKpfwCK01wPVb4sZZXaHQOxgTjPX 2Ai+ZRth0KozA== Date: Fri, 1 Aug 2025 13:23:42 -0700 From: Jakub Kicinski To: Carolina Jubran Cc: Tariq Toukan , Eric Dumazet , Paolo Abeni , Andrew Lunn , "David S. Miller" , Saeed Mahameed , Leon Romanovsky , Mark Bloch , Richard Cochran , netdev@vger.kernel.org, linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH net-next 0/3] Support exposing raw cycle counters in PTP and mlx5 Message-ID: <20250801132342.6ad4303b@kernel.org> In-Reply-To: References: <1752556533-39218-1-git-send-email-tariqt@nvidia.com> <20250721170916.490ce57e@kernel.org> <0c1cea33-6676-4590-8c7c-9fe1a3d88f0b@nvidia.com> <20250729154012.5d540144@kernel.org> 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: quoted-printable On Thu, 31 Jul 2025 22:03:02 +0300 Carolina Jubran wrote: > Additionally, I wanted to mention another relevant use case that wasn=E2= =80=99t=20 > brought up earlier: fwctl can expose event records tagged with raw cycle= =20 > counter timestamps. When the device is in free-running mode, correlating= =20 > those with host time becomes difficult unless user space has access to=20 > both cycle and system time snapshots. Okay, so DPDK and DOCA, got it.