From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
linux-rt-users <linux-rt-users@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: Why the mce reverts in 4.16-rt?
Date: Wed, 11 Jul 2018 09:23:11 +0200 [thread overview]
Message-ID: <20180711072311.cprdgb2xqwag2iem@linutronix.de> (raw)
In-Reply-To: <20180710205624.19ff9ef0@gandalf.local.home>
On 2018-07-10 20:56:24 [-0400], Steven Rostedt wrote:
> Hi Sebastian,
Hi Steven,
> I'm looking at backporting patches from 4.16-rt and noticed that you
> have:
>
> Revert "x86: Convert mce timer to hrtimer"
> Revert "x86/mce: use swait queue for mce wakeups"
>
> With no explanation to why they were reverted. When did things change?
> Should this be 4.14-rt material?
from the announce email:
| Changes since v4.16.8-rt2:
|
| - Drop two MCE related patches. They are no longer required since the
| timer wheel rework.
The timer wheel rework made it possible to have a raw_spin_lock_t in the
timer_list timer. The problem with MCE was that it enqueued a timer from
hardirq context which is now possible. So the patches are no longer
required. This revert does not fix a bug in v4.14 nor does it break
anything.
> Thanks,
>
> -- Steve
Sebastian
next prev parent reply other threads:[~2018-07-11 7:23 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-11 0:56 Why the mce reverts in 4.16-rt? Steven Rostedt
2018-07-11 7:23 ` Sebastian Andrzej Siewior [this message]
2018-07-11 12:51 ` Steven Rostedt
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