From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 68AA2C433E6 for ; Tue, 2 Mar 2021 09:27:32 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DE1FB600EF for ; Tue, 2 Mar 2021 09:27:31 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DE1FB600EF Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=ZKBmJthXPKxKVObtkGAy1vGCO9jXf9yY5DQpyZVR1ms=; b=rkQN5pBINfuob6MzaIXNMdc1g fs93rnFXzWEd3wynf1NKaHGCbyTJIIdkhM1xv/7PWs72JlRMGholkCQ/S9SQqWnEbAnwE5a6fNZGf Zj8fT/MvB6NZOZ8i6U2sAnLRFkuC8fielvids9Scex19c91GugfpD0/N8z/847zbYdbxUbpYJkHsb WBASLu7pkpBEOogcfgS7lYf47aubtdZ8HUaMJuYAYILYZCuDF6BOYlIBegkhvtn4LmccUWIXFXGEx LUuBJeHrsVG6/OHezq64gk680tIwbMIf/ehlZl2iQAMidtcCK6Z48kRweo5oEsObpph0p20VwSvi6 4mADfSEJA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1lH1Iq-00023j-RQ; Tue, 02 Mar 2021 09:26:52 +0000 Received: from mx2.suse.de ([195.135.220.15]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1lH1Il-000223-1K for linux-nvme@lists.infradead.org; Tue, 02 Mar 2021 09:26:48 +0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 01D3CAE79; Tue, 2 Mar 2021 09:26:46 +0000 (UTC) From: Hannes Reinecke To: Christoph Hellwig Subject: [PATCH 3/3] nvme: add 'kato' sysfs attribute Date: Tue, 2 Mar 2021 10:26:44 +0100 Message-Id: <20210302092644.80701-4-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210302092644.80701-1-hare@suse.de> References: <20210302092644.80701-1-hare@suse.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210302_042647_287908_14DD680A X-CRM114-Status: GOOD ( 13.32 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Keith Busch , Sagi Grimberg , Daniel Wagner , linux-nvme@lists.infradead.org, Hannes Reinecke , Chao Leng Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org Add a 'kato' controller sysfs attribute to display the current keep-alive timeout value (if any). This allows userspace to identify persistent discovery controllers, as these will have a non-zero KATO value. Signed-off-by: Hannes Reinecke --- drivers/nvme/host/core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 6d096d41a82f..4f92c5035045 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -3554,6 +3554,7 @@ nvme_show_int_function(cntlid); nvme_show_int_function(numa_node); nvme_show_int_function(queue_count); nvme_show_int_function(sqsize); +nvme_show_int_function(kato); static ssize_t nvme_sysfs_delete(struct device *dev, struct device_attribute *attr, const char *buf, @@ -3720,6 +3721,7 @@ static struct attribute *nvme_dev_attrs[] = { &dev_attr_hostid.attr, &dev_attr_ctrl_loss_tmo.attr, &dev_attr_reconnect_delay.attr, + &dev_attr_kato.attr, NULL }; -- 2.29.2 _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme