From: Stephen Hemminger <stephen@networkplumber.org>
To: dev@dpdk.org
Cc: mgamal@redhat.com, Stephen Hemminger <stephen@networkplumber.org>,
Stephen Hemminger <sthemmin@microsoft.com>
Subject: [dpdk-dev] [PATCH v2 4/4] bus/vmbus: debug subchannel setup
Date: Wed, 5 Dec 2018 14:11:59 -0800 [thread overview]
Message-ID: <20181205221159.6336-4-stephen@networkplumber.org> (raw)
In-Reply-To: <20181205221159.6336-1-stephen@networkplumber.org>
Add more instrumentation to subchannel setup to help diagnose
startup issues.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
---
drivers/bus/vmbus/linux/vmbus_uio.c | 24 +++++++++++++++---------
1 file changed, 15 insertions(+), 9 deletions(-)
diff --git a/drivers/bus/vmbus/linux/vmbus_uio.c b/drivers/bus/vmbus/linux/vmbus_uio.c
index 38df4d724ed5..09f7efdca286 100644
--- a/drivers/bus/vmbus/linux/vmbus_uio.c
+++ b/drivers/bus/vmbus/linux/vmbus_uio.c
@@ -357,19 +357,25 @@ int vmbus_uio_get_subchan(struct vmbus_channel *primary,
continue;
}
- if (!vmbus_isnew_subchannel(primary, relid))
- continue; /* Already know about you */
+ if (!vmbus_isnew_subchannel(primary, relid)) {
+ VMBUS_LOG(DEBUG, "skip already found channel: %lu",
+ relid);
+ continue;
+ }
- if (!vmbus_uio_ring_present(dev, relid))
- continue; /* Ring may not be ready yet */
+ if (!vmbus_uio_ring_present(dev, relid)) {
+ VMBUS_LOG(DEBUG, "ring mmap not found (yet) for: %lu",
+ relid);
+ continue;
+ }
snprintf(subchan_path, sizeof(subchan_path), "%s/%lu",
chan_path, relid);
err = vmbus_uio_sysfs_read(subchan_path, "subchannel_id",
&subid, UINT16_MAX);
if (err) {
- VMBUS_LOG(NOTICE, "invalid subchannel id %lu",
- subid);
+ VMBUS_LOG(NOTICE, "no subchannel_id in %s:%s",
+ subchan_path, strerror(-err));
goto fail;
}
@@ -379,14 +385,14 @@ int vmbus_uio_get_subchan(struct vmbus_channel *primary,
err = vmbus_uio_sysfs_read(subchan_path, "monitor_id",
&monid, UINT8_MAX);
if (err) {
- VMBUS_LOG(NOTICE, "invalid monitor id %lu",
- monid);
+ VMBUS_LOG(NOTICE, "no monitor_id in %s:%s",
+ subchan_path, strerror(-err));
goto fail;
}
err = vmbus_chan_create(dev, relid, subid, monid, subchan);
if (err) {
- VMBUS_LOG(NOTICE, "subchannel setup failed");
+ VMBUS_LOG(ERR, "subchannel setup failed");
goto fail;
}
break;
--
2.19.2
next prev parent reply other threads:[~2018-12-05 22:12 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-30 11:04 [dpdk-dev] Problems running netvsc multiq Mohammed Gamal
2018-11-30 18:27 ` Stephen Hemminger
2018-11-30 19:06 ` Mohammed Gamal
2018-12-04 16:48 ` Stephen Hemminger
2018-12-04 16:56 ` Mohammed Gamal
2018-12-05 22:12 ` Stephen Hemminger
2018-12-05 22:32 ` Stephen Hemminger
2018-12-07 11:15 ` Mohammed Gamal
2018-12-07 17:31 ` Stephen Hemminger
2018-12-07 19:18 ` Stephen Hemminger
2018-12-08 8:10 ` Mohammed Gamal
2018-11-30 20:24 ` [dpdk-dev] [PATCH] bus/vmbus: fix race in sub channel creation Stephen Hemminger
2018-12-03 6:02 ` Mohammed Gamal
2018-12-03 16:48 ` Stephen Hemminger
2018-12-04 11:59 ` Mohammed Gamal
2018-12-05 22:11 ` [dpdk-dev] [PATCH v2 1/4] " Stephen Hemminger
2018-12-05 22:11 ` [dpdk-dev] [PATCH v2 2/4] net/netvsc: enable SR-IOV Stephen Hemminger
2018-12-05 22:11 ` [dpdk-dev] [PATCH v2 3/4] net/netvsc: disable multi-queue on older servers Stephen Hemminger
2018-12-05 22:11 ` Stephen Hemminger [this message]
2018-12-19 2:02 ` [dpdk-dev] [PATCH v2 1/4] bus/vmbus: fix race in sub channel creation Thomas Monjalon
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