From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 45FE4486 for ; Thu, 21 Jul 2016 10:28:50 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id C349116B for ; Thu, 21 Jul 2016 10:28:49 +0000 (UTC) Message-ID: <1469096925.120686.122.camel@infradead.org> From: David Woodhouse To: Andy Lutomirski , "Wangnan (F)" Date: Thu, 21 Jul 2016 11:28:45 +0100 In-Reply-To: References: <20160719034717.GA24189@swordfish> <535ebaec-1653-3077-d17b-feb847fd51d2@suse.com> <578EF192.3050808@huawei.com> Content-Type: multipart/signed; micalg="sha-256"; protocol="application/x-pkcs7-signature"; boundary="=-P6OcgE6K5+9mHy7jee15" Mime-Version: 1.0 Cc: "ksummit-discuss@lists.linuxfoundation.org" Subject: Re: [Ksummit-discuss] [TECH TOPIC] asynchronous printk List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , --=-P6OcgE6K5+9mHy7jee15 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, 2016-07-20 at 18:16 -0700, Andy Lutomirski wrote: > If we do all this stuff, can we also try to clean up earlyprintk a > bit? The whole earlyconsole mechanism is a mess, and switching over > to the non-early console is only somewhat functional. I'd love to see > this all simplified: before there's any console at all available, just > buffer messages. Then, when a console shows up, write the buffer out. > Then earlyprintk can work just like regular printk. That's exactly what we already do. Look at the CON_PRINTBUFFER flag. I never did understand why "earlyprintk" was introduced as such a nasty special-case hack in the first place. There were various minor excuses for doing so, but nothing insurmountable IIRC. I would *love* to kill it completely and simplify the whole thing. --=20 David Woodhouse Open Source Technology Centre David.Woodhouse@intel.com Intel Corporation --=-P6OcgE6K5+9mHy7jee15 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCEeAw ggXiMIIDyqADAgECAhBrp4p9CteI1lEK+Vnk57ThMA0GCSqGSIb3DQEBCwUAMH0xCzAJBgNVBAYT AklMMRYwFAYDVQQKEw1TdGFydENvbSBMdGQuMSswKQYDVQQLEyJTZWN1cmUgRGlnaXRhbCBDZXJ0 aWZpY2F0ZSBTaWduaW5nMSkwJwYDVQQDEyBTdGFydENvbSBDZXJ0aWZpY2F0aW9uIEF1dGhvcml0 eTAeFw0xNTEyMTYwMTAwMDVaFw0zMDEyMTYwMTAwMDVaMHUxCzAJBgNVBAYTAklMMRYwFAYDVQQK Ew1TdGFydENvbSBMdGQuMSkwJwYDVQQLEyBTdGFydENvbSBDZXJ0aWZpY2F0aW9uIEF1dGhvcml0 eTEjMCEGA1UEAxMaU3RhcnRDb20gQ2xhc3MgMSBDbGllbnQgQ0EwggEiMA0GCSqGSIb3DQEBAQUA A4IBDwAwggEKAoIBAQC9fdr3w6J9g/Zbgv3bW1+uHht1wLUZr5gkrLtXedg17AkefMyUGwrQdvwO 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