From: "Zheng, Lv" <lv.zheng@intel.com>
To: Borislav Petkov <bp@alien8.de>, "Rafael J. Wysocki" <rafael@kernel.org>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"stan.kain@gmail.com" <stan.kain@gmail.com>,
"waffolz@hotmail.com" <waffolz@hotmail.com>,
Josh Triplett <josh@joshtriplett.org>,
Steven Rostedt <rostedt@goodmis.org>,
"mathieu.desnoyers@efficios.com" <mathieu.desnoyers@efficios.com>,
"jiangshanlai@gmail.com" <jiangshanlai@gmail.com>,
Ingo Molnar <mingo@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: RE: [PATCH] rcu: Narrow early boot window of illegal synchronous grace periods
Date: Mon, 16 Jan 2017 01:57:25 +0000 [thread overview]
Message-ID: <1AE640813FDE7649BE1B193DEA596E886CE2BD4E@SHSMSX101.ccr.corp.intel.com> (raw)
In-Reply-To: <20170114125017.5wp2khn5scezeuau@pd.tnic>
Hi,
> From: Borislav Petkov [mailto:bp@alien8.de]
> Subject: Re: [PATCH] rcu: Narrow early boot window of illegal synchronous grace periods
>
> On Sat, Jan 14, 2017 at 01:27:40PM +0100, Rafael J. Wysocki wrote:
> > OK, so this fixes the problem with synchronize_rcu_expedited() in
> > acpi_os_map_cleanup(), right?
>
> Yeah.
>
> > I wonder if the ACPI-specific fix is still needed, then?
>
> It is not strictly necessary. If you still think it would be better to
> have it regardless, you could pick it up. I.e., making ACPI more robust,
> yadda yadda.
>
> I dunno, though, perhaps it is only complicating the code unnecessarily
> and then can be safely ignored with a mental note for future freezes.
Glad to see it fixed inside of the API provider.
IMO, ACPI fix is unnecessary as ACPI is just a user of the RCU APIs.
And it's pointless to add special checks in the user side in order to use one of them.
Thanks and best regards
Lv
>
> --
> Regards/Gruss,
> Boris.
>
> Good mailing practices for 400: avoid top-posting and trim the reply.
next prev parent reply other threads:[~2017-01-16 1:57 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-13 2:38 [PATCH] rcu: Narrow early boot window of illegal synchronous grace periods Paul E. McKenney
2017-01-13 11:25 ` Borislav Petkov
2017-01-14 8:00 ` Paul E. McKenney
2017-01-14 10:35 ` Borislav Petkov
2017-01-14 12:27 ` Rafael J. Wysocki
2017-01-14 12:50 ` Borislav Petkov
2017-01-16 1:57 ` Zheng, Lv [this message]
2017-01-16 4:56 ` Paul E. McKenney
2017-01-15 5:24 ` Paul E. McKenney
2017-01-15 10:09 ` Borislav Petkov
2017-01-15 20:33 ` Paul E. McKenney
2017-01-13 17:02 ` Borislav Petkov
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