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vmbus: add per-channel sysfs info

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This extends existing vmbus related sysfs structure to provide per-channel
state information. This is useful when diagnosing issues with multiple
queues in networking and storage.

The existing sysfs only displayed information about the primary
channel. The one place it reported multiple channels was the
channel_vp_mapping file which violated the sysfs convention
of one value per file.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Stephen Hemminger
2017-09-21 20:58:49 -07:00
committed by Greg Kroah-Hartman
parent 876a1b08d0
commit c2e5df616e
5 changed files with 246 additions and 13 deletions
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6
include/linux/hyperv.h
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@@ -828,6 +828,11 @@ struct vmbus_channel {
*/
struct rcu_head rcu;
/*
* For sysfs per-channel properties.
*/
struct kobject kobj;
/*
* For performance critical channels (storage, networking
* etc,), Hyper-V has a mechanism to enhance the throughput
@@ -1089,6 +1094,7 @@ struct hv_device {
struct device device;
struct vmbus_channel *channel;
struct kset *channels_kset;
};