From mboxrd@z Thu Jan 1 00:00:00 1970 From: Don Brace Subject: [PATCH v3 07/42] hpsa: allow lockup detected to be viewed via sysfs Date: Tue, 17 Mar 2015 15:03:03 -0500 Message-ID: <20150317200303.19856.7896.stgit@brunhilda> References: <20150317200139.19856.87982.stgit@brunhilda> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Received: from g4t3427.houston.hp.com ([15.201.208.55]:54120 "EHLO g4t3427.houston.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932116AbbCQUEm (ORCPT ); Tue, 17 Mar 2015 16:04:42 -0400 In-Reply-To: <20150317200139.19856.87982.stgit@brunhilda> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: scott.teel@pmcs.com, Kevin.Barnett@pmcs.com, james.bottomley@parallels.com, hch@infradead.org, Justin.Lindley@pmcs.com, brace@pmcs.com Cc: linux-scsi@vger.kernel.org From: Stephen Cameron expose a detected lockup via sysfs Reviewed-by: Scott Teel Reviewed-by: Kevin Barnett Signed-off-by: Don Brace --- drivers/scsi/hpsa.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 415ec4d..f84d63f 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -351,6 +351,20 @@ static int check_for_busy(struct ctlr_info *h, struct CommandList *c) return 1; } +static u32 lockup_detected(struct ctlr_info *h); +static ssize_t host_show_lockup_detected(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int ld; + struct ctlr_info *h; + struct Scsi_Host *shost = class_to_shost(dev); + + h = shost_to_hba(shost); + ld = lockup_detected(h); + + return sprintf(buf, "ld=%d\n", ld); +} + static ssize_t host_store_hp_ssd_smart_path_status(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) @@ -698,12 +712,15 @@ static DEVICE_ATTR(transport_mode, S_IRUGO, host_show_transport_mode, NULL); static DEVICE_ATTR(resettable, S_IRUGO, host_show_resettable, NULL); +static DEVICE_ATTR(lockup_detected, S_IRUGO, + host_show_lockup_detected, NULL); static struct device_attribute *hpsa_sdev_attrs[] = { &dev_attr_raid_level, &dev_attr_lunid, &dev_attr_unique_id, &dev_attr_hp_ssd_smart_path_enabled, + &dev_attr_lockup_detected, NULL, };