From: kys@exchange.microsoft.com
To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org,
devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com,
vkuznets@redhat.com, jasowang@redhat.com,
leann.ogasawara@canonical.com
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Subject: [PATCH 2/3] Drivers: hv: vmbus: Reduce the delay between retries in vmbus_post_msg()
Date: Fri, 1 Jul 2016 16:26:36 -0700 [thread overview]
Message-ID: <1467415597-7943-2-git-send-email-kys@exchange.microsoft.com> (raw)
In-Reply-To: <1467415597-7943-1-git-send-email-kys@exchange.microsoft.com>
From: K. Y. Srinivasan <kys@microsoft.com>
The current delay between retries is unnecessarily high and is negatively
affecting the time it takes to boot the system.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
drivers/hv/connection.c | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c
index fcf8a02..78e6368 100644
--- a/drivers/hv/connection.c
+++ b/drivers/hv/connection.c
@@ -439,7 +439,7 @@ int vmbus_post_msg(void *buffer, size_t buflen)
union hv_connection_id conn_id;
int ret = 0;
int retries = 0;
- u32 msec = 1;
+ u32 usec = 1;
conn_id.asu32 = 0;
conn_id.u.id = VMBUS_MESSAGE_CONNECTION_ID;
@@ -472,9 +472,9 @@ int vmbus_post_msg(void *buffer, size_t buflen)
}
retries++;
- msleep(msec);
- if (msec < 2048)
- msec *= 2;
+ udelay(usec);
+ if (usec < 2048)
+ usec *= 2;
}
return ret;
}
--
1.7.4.1
next prev parent reply other threads:[~2016-07-01 21:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-01 23:25 [PATCH 0/3] Drivers: hv: vmbus: Miscellaneous adjustments kys
2016-07-01 23:26 ` [PATCH 1/3] Drivers: hv: vmbus: Enable explicit signaling policy for NIC channels kys
2016-07-01 23:26 ` kys [this message]
2016-07-01 23:26 ` [PATCH 3/3] Drivers: hv: vmbus: Implement a mechanism to tag the channel for low latency kys
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1467415597-7943-2-git-send-email-kys@exchange.microsoft.com \
--to=kys@exchange.microsoft.com \
--cc=apw@canonical.com \
--cc=devel@linuxdriverproject.org \
--cc=gregkh@linuxfoundation.org \
--cc=jasowang@redhat.com \
--cc=kys@microsoft.com \
--cc=leann.ogasawara@canonical.com \
--cc=linux-kernel@vger.kernel.org \
--cc=olaf@aepfle.de \
--cc=vkuznets@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®