This is a note to let you know that I've just added the patch titled
Drivers: hv: vmbus: Reduce the delay between retries in vmbus_post_msg()
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drivers-hv-vmbus-reduce-the-delay-between-retries-in-vmbus_post_msg.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8de0d7e951826d7592e0ba1da655b175c4aa0923 Mon Sep 17 00:00:00 2001
From: "K. Y. Srinivasan" <kys@xxxxxxxxxxxxx>
Date: Fri, 1 Jul 2016 16:26:36 -0700
Subject: Drivers: hv: vmbus: Reduce the delay between retries in vmbus_post_msg()
From: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
commit 8de0d7e951826d7592e0ba1da655b175c4aa0923 upstream.
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@xxxxxxxxxxxxx>
Signed-off-by: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/hv/connection.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/hv/connection.c
+++ b/drivers/hv/connection.c
@@ -429,7 +429,7 @@ int vmbus_post_msg(void *buffer, size_t
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;
@@ -462,9 +462,9 @@ int vmbus_post_msg(void *buffer, size_t
}
retries++;
- msleep(msec);
- if (msec < 2048)
- msec *= 2;
+ udelay(usec);
+ if (usec < 2048)
+ usec *= 2;
}
return ret;
}
Patches currently in stable-queue which might be from kys@xxxxxxxxxxxxx are
queue-4.4/drivers-hv-get-rid-of-timeout-in-vmbus_open.patch
queue-4.4/drivers-hv-don-t-leak-memory-in-vmbus_establish_gpadl.patch
queue-4.4/drivers-hv-vmbus-reduce-the-delay-between-retries-in-vmbus_post_msg.patch