From: Peter Zijlstra <peterz@infradead.org>
To: KY Srinivasan <kys@microsoft.com>
Cc: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"devel@linuxdriverproject.org" <devel@linuxdriverproject.org>,
"mingo@kernel.org" <mingo@kernel.org>,
"rafael.j.wysocki@intel.com" <rafael.j.wysocki@intel.com>,
"tglx@linutronix.de" <tglx@linutronix.de>,
Vitaly Kuznetsov <vkuznets@redhat.com>
Subject: Re: [PATCH 1/1] cpu-hotplug: export cpu_hotplug_enable/cpu_hotplug_disable
Date: Tue, 23 Jun 2015 20:13:10 +0200 [thread overview]
Message-ID: <20150623181310.GG3644@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <BY2PR0301MB16541403929BC684018DE59FA0A00@BY2PR0301MB1654.namprd03.prod.outlook.com>
On Tue, Jun 23, 2015 at 04:57:05PM +0000, KY Srinivasan wrote:
> > diff --git a/kernel/cpu.c b/kernel/cpu.c
> > index 94bbe46..8f35ee6 100644
> > --- a/kernel/cpu.c
> > +++ b/kernel/cpu.c
> > @@ -190,17 +190,19 @@ void cpu_hotplug_done(void)
> > void cpu_hotplug_disable(void)
> > {
> > cpu_maps_update_begin();
> > - cpu_hotplug_disabled = 1;
> > + cpu_hotplug_disabled++;
> > cpu_maps_update_done();
> > }
> > +EXPORT_SYMBOL_GPL(cpu_hotplug_disable);
> >
> > void cpu_hotplug_enable(void)
> > {
> > cpu_maps_update_begin();
> > - cpu_hotplug_disabled = 0;
> > + if (cpu_hotplug_disabled)
> > + cpu_hotplug_disabled--;
No that just papers over bugs.
> > cpu_maps_update_done();
> > }
next prev parent reply other threads:[~2015-06-23 18:13 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-22 2:56 [PATCH 1/1] cpu-hotplug: export cpu_hotplug_enable/cpu_hotplug_disable K. Y. Srinivasan
2015-06-23 16:57 ` KY Srinivasan
2015-06-23 18:13 ` Peter Zijlstra [this message]
2015-06-24 9:43 ` Vitaly Kuznetsov
2015-06-24 9:54 ` Thomas Gleixner
2015-06-24 11:11 ` Vitaly Kuznetsov
2015-06-24 10:27 ` Peter Zijlstra
2015-06-24 11:14 ` Vitaly Kuznetsov
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=20150623181310.GG3644@twins.programming.kicks-ass.net \
--to=peterz@infradead.org \
--cc=devel@linuxdriverproject.org \
--cc=gregkh@linuxfoundation.org \
--cc=kys@microsoft.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=rafael.j.wysocki@intel.com \
--cc=tglx@linutronix.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