On Mon, Mar 30, 2020 at 02:14:18PM +0200, gregkh@xxxxxxxxxxxxxxxxxxx wrote:
The patch below does not apply to the 5.5-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 749da8ca978f19710aba496208c480ad42d37f79 Mon Sep 17 00:00:00 2001
From: Yubo Xie <yuboxie@xxxxxxxxxxxxx>
Date: Thu, 26 Mar 2020 19:11:59 -0700
Subject: [PATCH] clocksource/drivers/hyper-v: Make sched clock return
nanoseconds correctly
The sched clock read functions return the HV clock (100ns granularity)
without converting it to nanoseconds.
Add the missing conversion.
Fixes: bd00cd52d5be ("clocksource/drivers/hyperv: Add Hyper-V specific sched clock function")
Signed-off-by: Yubo Xie <yuboxie@xxxxxxxxxxxxx>
Signed-off-by: Tianyu Lan <Tianyu.Lan@xxxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lkml.kernel.org/r/20200327021159.31429-1-Tianyu.Lan@xxxxxxxxxxxxx
We don't have 0af3e137c144 ("clocksource/drivers/hyper-v: Untangle
stimers and timesync from clocksources") on 5.5 and older. I've adjusted
this patch and queued it for 5.5 and 5.4.
--
Thanks,
Sasha
