From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 01 Jul 2024 14:36:25 +0200 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1sOGGf-000VDH-15 for lore@lore.pengutronix.de; Mon, 01 Jul 2024 14:36:25 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1sOGGe-0002bL-Q4 for lore@pengutronix.de; Mon, 01 Jul 2024 14:36:25 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:Date:Message-Id:Subject:References:In-Reply-To:To: From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=MogHviNTF3Sxml86WLQr6qdbd/TC8W+bOGHeUZmqbQ0=; b=iqyCP8nzYM9Xycafj+AF4dm7R8 aIVJ+BllIIrgZ6beabdYLKjzGvdI8SvWnYq66l49KnM3YIK/ZXP66S6A/3IdBYaTCKacF6LKlzIxo +++q5BkVQAFEkcmqVbAlf/raIOvydkGBQSFFgmOG0KUN044eVt4Y84itLoL1/WgGVHmS+GxIuoBiS tUSLbtK4ApBc2JvemgL7TC7PKxqGx8jo0q4HwO/GA7tlBQ/WScQ/Ts6CV/ID+NaCeCXzclARHKpHC yjzEDjWbv/P3HqJEZjIll3AOwrhvqo1P2NC2gCjsYAa2lVcc2DKgIdynLqE2IDxnSAykKkNupmaP4 p4B7GwcQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sOGGC-00000003Fk3-1lzk; Mon, 01 Jul 2024 12:35:56 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sOFsC-000000034I1-1cVV for barebox@lists.infradead.org; Mon, 01 Jul 2024 12:11:09 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1sOFsA-0000tk-Tv; Mon, 01 Jul 2024 14:11:06 +0200 Received: from [2a0a:edc0:0:1101:1d::28] (helo=dude02.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sOFsA-006Mw3-Gy; Mon, 01 Jul 2024 14:11:06 +0200 Received: from localhost ([::1] helo=dude02.red.stw.pengutronix.de) by dude02.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1sOFsA-006Gdx-1S; Mon, 01 Jul 2024 14:11:06 +0200 From: Sascha Hauer To: barebox@lists.infradead.org, Ahmad Fatoum In-Reply-To: <20240620125829.550300-1-a.fatoum@pengutronix.de> References: <20240620125829.550300-1-a.fatoum@pengutronix.de> Message-Id: <171983586644.1493916.13211587647238402962.b4-ty@pengutronix.de> Date: Mon, 01 Jul 2024 14:11:06 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.12.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240701_051108_465161_85C510E7 X-CRM114-Status: UNSURE ( 9.13 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.2 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH master] common: misc: do not run pollers inside panic() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) On Thu, 20 Jun 2024 14:58:29 +0200, Ahmad Fatoum wrote: > When panic() is not configured to hang, it will wait 100 ms for messages > to go out before trying to poweroff or reset the machine. > > The wait is implemented using udelay(), which runs pollers if the delay > duration exceeds 100 us. This is a bad idea as it needlessly exposes > barebox to hang indefinitely if the driver that's being polled had > something to do with why we ended up in the panic in the first place. > > [...] Applied, thanks! [1/1] common: misc: do not run pollers inside panic() https://git.pengutronix.de/cgit/barebox/commit/?id=b026cd03f940 (link may not be stable) Best regards, -- Sascha Hauer