From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (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 F396A3D9666; Tue, 26 May 2026 23:54:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.50.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779839684; cv=none; b=uiwmCvAh4VxhidPPK5ZHRHrgUgEDMLaTXphTStxmse9Ifjix3lZ/HTmcGY5/jixXQ6ZAcIzXmpQpb82WseXvZg4+hjxKxwLnSoAStmzIAIyFfU04Ay58DMfw5u7XxJX1b05/WAIWoSaDf6xGs/clVe1qUkycY+wFS6YkPe6yNew= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779839684; c=relaxed/simple; bh=CIHtvJwhBzvsyYAIcBtPJGS2M7Y36IbcV/+Xd1OZHW0=; h=Message-ID:Subject:From:To:Cc:Date:in-reply-to:Content-Type: MIME-Version; b=Fzgu2+zzWcu+S7ij9rv1Wv+RhiFCrcHADG6pxNh/KCoM95SvS9aCMx4W4IO+fw7SPpRvEVo7xGzkyLh/CqRS/zrpiZ651IO+Um6ZC4vLPlZZrPFHzsO5yMWMyiDrVdUaEFnAxCPqOPUywRw9wpme64Ujx7L9tv2ZqzwiMVCvSVA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=casper.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=lMFs2Hs3; arc=none smtp.client-ip=90.155.50.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=casper.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="lMFs2Hs3" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=MIME-Version:Content-Type:in-reply-to: Date:Cc:To:From:Subject:Message-ID:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:References; bh=DyP9obqDQDUKWM47ruElto7ul0Wdn0TIuwzzMyHJFkw=; b=lMFs2Hs38D2FB8FWQZDhiIi85y qywfQ4CPxP0jUccVldLlZ70actKF+Tg0mYPAMn1aI9qUhwxsxfigYl0xbdvpUSlBakZx+XQkNBVkJ hraFY3iHFnezXHMq/in38eo+oNIwfVCyRI2CFZX9auQelzmSk4ipNihfCtUu2Pd5h9B5Wonh5qeuG BToWwrAvWMJZSt/PCeNieEF91vT22JYcXt669acr+4c0PjszTuhFspy7oaKSVhAg6+/bgzXq31rOx o13XDRjZVZ6ltlmDfk9UyDSGg875NZP35/UGHU7B7cPA66VpHBlDMELHWZ5n5Pt5zXPCoycSUlrDH XbxXU8zw==; Received: from 54-240-197-231.amazon.com ([54.240.197.231] helo=u09cd745991455d.ant.amazon.com) by casper.infradead.org with esmtpsa (Exim 4.99.1 #2 (Red Hat Linux)) id 1wS1bO-00000001gIf-3NNs; Tue, 26 May 2026 23:54:26 +0000 Message-ID: <4546e72cae58298c40a69ae11f7a2e6d279dfd68.camel@infradead.org> Subject: Re: [PATCH 18/24] timekeeping: Prepare for cross timestamps on arbitrary clock IDs From: David Woodhouse To: tglx@kernel.org Cc: akiyano@amazon.com, anna-maria@linutronix.de, anthony.l.nguyen@intel.com, dwmw2@infradead.org, frederic@kernel.org, giometti@enneenne.com, jacob.e.keller@intel.com, johannes.berg@intel.com, jstultz@google.com, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org, linux-sound@vger.kernel.org, linux-wireless@vger.kernel.org, maz@kernel.org, miriam.rachel.korenblit@intel.com, mlichvar@redhat.com, mst@redhat.com, netdev@vger.kernel.org, oliver.upton@linux.dev, oupton@kernel.org, peter.hilber@oss.qualcomm.com, richardcochran@gmail.com, saeedm@nvidia.com, sboyd@kernel.org, thomas.weissschuh@linutronix.de, tiwai@suse.com, vdonnefort@google.com, virtualization@lists.linux.dev Date: Wed, 27 May 2026 00:54:25 +0100 in-reply-to: <20260526171224.050496338@kernel.org> Content-Type: multipart/signed; micalg="sha-256"; protocol="application/pkcs7-signature"; boundary="=-Z8WZflYjaJa4CpP1ypSx" User-Agent: Evolution 3.52.3-0ubuntu1.1 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html --=-Z8WZflYjaJa4CpP1ypSx Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 26 May 2026 19:14:57 +0200, Thomas Gleixner wrote: > PTP device system crosstime stamps support only CLOCK_REALTIME, which is > meaningless for AUX clocks. The PTP core hands in the clock ID already, s= o > prepare the core code to honor it. > > - Add a new sys_systime field to struct system_device_crosststamp which > aliases the sys_realtime field. Once all users are converted > sys_realtime can be removed. > > - Prepare get_device_system_crosststamp() and the related code for it by > switching to sys_systime and providing the initial changes to utilize > different time keepers. > > No functional change intended. > > Signed-off-by: Thomas Gleixner I suspect I'll be back to frown at adjust_historical_crosststamp() at some point, but that's a separate issue. For this change: Reviewed-by: David Woodhouse Tested-by: David Woodhouse --=-Z8WZflYjaJa4CpP1ypSx Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCD9Aw ggSOMIIDdqADAgECAhAOmiw0ECVD4cWj5DqVrT9PMA0GCSqGSIb3DQEBCwUAMGUxCzAJBgNVBAYT AlVTMRUwEwYDVQQKEwxEaWdpQ2VydCBJbmMxGTAXBgNVBAsTEHd3dy5kaWdpY2VydC5jb20xJDAi BgNVBAMTG0RpZ2lDZXJ0IEFzc3VyZWQgSUQgUm9vdCBDQTAeFw0yNDAxMzAwMDAwMDBaFw0zMTEx MDkyMzU5NTlaMEExCzAJBgNVBAYTAkFVMRAwDgYDVQQKEwdWZXJva2V5MSAwHgYDVQQDExdWZXJv a2V5IFNlY3VyZSBFbWFpbCBHMjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMjvgLKj jfhCFqxYyRiW8g3cNFAvltDbK5AzcOaR7yVzVGadr4YcCVxjKrEJOgi7WEOH8rUgCNB5cTD8N/Et GfZI+LGqSv0YtNa54T9D1AWJy08ZKkWvfGGIXN9UFAPMJ6OLLH/UUEgFa+7KlrEvMUupDFGnnR06 aDJAwtycb8yXtILj+TvfhLFhafxroXrflspavejQkEiHjNjtHnwbZ+o43g0/yxjwnarGI3kgcak7 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