From: Hannes Reinecke <hare@suse.de>
To: Christoph Hellwig <hch@lst.de>
Cc: Sagi Grimberg <sagi@grimberg.me>,
Keith Busch <keith.busch@wdc.com>,
linux-nvme@lists.infradead.org, Hannes Reinecke <hare@suse.de>
Subject: [PATCH 2/2] nvme: add 'kato' sysfs attribute
Date: Fri, 16 Apr 2021 13:46:21 +0200 [thread overview]
Message-ID: <20210416114621.129736-3-hare@suse.de> (raw)
In-Reply-To: <20210416114621.129736-1-hare@suse.de>
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 <hare@suse.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
---
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 f58e196d5b4b..67f0607055e8 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -3173,6 +3173,7 @@ 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,
@@ -3370,6 +3371,7 @@ static struct attribute *nvme_dev_attrs[] = {
&dev_attr_ctrl_loss_tmo.attr,
&dev_attr_reconnect_delay.attr,
&dev_attr_fast_io_fail_tmo.attr,
+ &dev_attr_kato.attr,
NULL
};
--
2.29.2
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next prev parent reply other threads:[~2021-04-16 11:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-16 11:46 [PATCHv4 0/2] nvme: sanitize KATO setting Hannes Reinecke
2021-04-16 11:46 ` [PATCH 1/2] " Hannes Reinecke
2021-04-16 11:46 ` Hannes Reinecke [this message]
2021-04-20 8:07 ` [PATCHv4 0/2] " Christoph Hellwig
-- strict thread matches above, loose matches on Subject: below --
2021-03-11 10:37 [PATCHv3 " Hannes Reinecke
2021-03-11 10:37 ` [PATCH 2/2] nvme: add 'kato' sysfs attribute Hannes Reinecke
2021-03-15 17:22 ` Sagi Grimberg
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