From: Robin Holt <holt@sgi.com>
To: linux-mm@kvack.org
Subject: Is there a way to do an architecture specific shake of memory?
Date: Tue, 8 Mar 2005 15:15:35 -0600 [thread overview]
Message-ID: <20050308211535.GB16061@lnx-holt.americas.sgi.com> (raw)
I am in the process of fixing the quicklist handling for the ia64 page
tables. The problem we are running into is the quicklists are per-cpu.
When memory is running short, the only current callout to shrink the
quicklist is coming from cpu_idle(). The most recent suggestion is to
schedule_delayed_work_on() for every cpu in the system and have them
check to see if the quicklist needs to be shrunk. This feels wrong.
What I would like to do is have wakup_kswapd(), kswapd() or
balance_pdgat() do the actual call to smp_call_function_single() as
needed to try to shrink the quicklists. This would need to be an ia64
only change. Is there already a method for the architecture to get
control during any part of the process? If not, where would be the most
acceptable place?
Any suggestions are welcome.
Thanks,
Robin Holt
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next reply other threads:[~2005-03-08 21:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-08 21:15 Robin Holt [this message]
2005-03-09 2:35 ` Christoph Lameter
2005-03-09 12:14 ` Robin Holt
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