This patch adds the kernelcore= parameter for ppc64.
The amount of memory will requested will not be reserved in all nodes. The
first node that is found that can accomodate the requested amount of memory
and have remaining more for ZONE_EASYRCLM is used. If a node has memory holes,
it also will not be used.
One thing I think we really need to see before these go into mainline is
the ability to shrink the ZONE_EASYRCLM at runtime, and give the memory
back to NORMAL/DMA.
Otherwise, any system starting off sufficiently small will end up having
lowmem starvation issues. Allowing resizing at least gives the admin a
chance to avoid those issues.
I'm not too keen on calling it resizing, because that term is
misleading. The resizing is one way. You can't later resize back. It's
like a window that you can only close but never reopen. We should call
it "runtime incremental disabling", or RID.
I don't think we need RID in order to merge these patches. RID can be
merged later if people decide they want a special easy reclaim zone that
could disappear at any moment. I personally fall in the camp of wanting
my zones I explicitly enabled to stay put and am opposed to RID.
If only somebody had presented a solution that was flexible enough to
dynamically resize reclaimable and non-reclaimable both ways.
http://sourceforge.net/mailarchive/message.php?msg_id=13864331
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
