From: Viresh Kumar <viresh.kumar@linaro.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Christoph Lameter <cl@linux.com>,
Andrew Morton <akpm@linux-foundation.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Linaro Kernel Mailman List <linaro-kernel@lists.linaro.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
vinmenon@codeaurora.org, shashim@codeaurora.org,
Michal Hocko <mhocko@suse.cz>, Mel Gorman <mgorman@suse.de>,
dave@stgolabs.net, Konstantin Khlebnikov <koct9i@gmail.com>,
Linux Memory Management List <linux-mm@kvack.org>,
Suresh Siddha <suresh.b.siddha@intel.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [RFC] vmstat: Avoid waking up idle-cpu to service shepherd work
Date: Sat, 28 Mar 2015 09:58:38 +0530 [thread overview]
Message-ID: <CAKohpomiqOcmZe+tAPNv_kX=+FmtMu8K=Qgze1y2SvgJ1A16NQ@mail.gmail.com> (raw)
In-Reply-To: <20150327120240.GC23123@twins.programming.kicks-ass.net>
On 27 March 2015 at 17:32, Peter Zijlstra <peterz@infradead.org> wrote:
> What's not clear to me is why that thing is allocated at all, AFAICT
> something like:
>
> static DEFINE_PER_CPU(struct tvec_base, tvec_bases);
>
> Should do the right thing and be much simpler.
Does this comment from timers.c answers your query ?
/*
* This is for the boot CPU - we use compile-time
* static initialisation because per-cpu memory isn't
* ready yet and because the memory allocators are not
* initialised either.
*/
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next prev parent reply other threads:[~2015-03-28 4:28 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-26 5:39 Viresh Kumar
2015-03-26 20:18 ` Andrew Morton
2015-03-27 4:49 ` Viresh Kumar
2015-03-27 9:16 ` Peter Zijlstra
2015-03-27 9:30 ` Peter Zijlstra
2015-03-27 11:11 ` Christoph Lameter
2015-03-27 12:02 ` Peter Zijlstra
2015-03-27 19:45 ` Christoph Lameter
2015-03-28 4:28 ` Viresh Kumar [this message]
2015-03-28 11:41 ` Peter Zijlstra
2015-03-28 4:18 ` Viresh Kumar
2015-03-28 9:53 ` Peter Zijlstra
2015-03-28 11:57 ` viresh kumar
2015-03-28 12:04 ` Viresh Kumar
2015-03-28 13:44 ` Peter Zijlstra
2015-03-29 10:24 ` Peter Zijlstra
2015-03-30 12:02 ` Viresh Kumar
2015-03-30 12:47 ` Peter Zijlstra
2015-03-30 13:14 ` Viresh Kumar
2015-03-30 13:59 ` Peter Zijlstra
2015-03-30 16:17 ` Viresh Kumar
2015-03-30 16:25 ` Peter Zijlstra
2015-03-29 12:01 ` Viresh Kumar
2015-03-29 17:24 ` Peter Zijlstra
2015-03-30 15:08 ` Michal Hocko
2015-03-30 15:14 ` Peter Zijlstra
2015-03-30 15:42 ` Christoph Lameter
2015-03-27 14:19 ` Michal Hocko
2015-03-28 4:34 ` Viresh Kumar
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