On Thu, 23 Apr 2015 14:41:34 -0400 Eric B Munson <emunson@xxxxxxxxxx> wrote:
> On Thu, 23 Apr 2015, Sri Jayaramappa wrote:
>
> > Commit commit 5bbe3547aa3b ("mm: allow compaction of unevictable pages")
> > introduced a sysctl that allows userspace to enable scanning of locked
> > pages for compaction. This patch introduces a new test which fragments
> > main memory and attempts to allocate a number of huge pages to exercise
> > this compaction logic.
> >
> > Tested on machines with up to 32 GB RAM. With the patch a much larger
> > number of huge pages can be allocated than on the kernel without the
> > patch.
> >
> > Example output:
> > On a machine with 16 GB RAM:
> > sudo make run_tests vm
> > ...
> > -----------------------
> > running compaction_test
> > -----------------------
> > No of huge pages allocated = 3834
> > [PASS]
> > ...
> >
> > Signed-off-by: Sri Jayaramappa <sjayaram@xxxxxxxxxx>
> > Cc: linux-kernel@xxxxxxxxxxxxxxx
> > Cc: linux-api@xxxxxxxxxxxxxxx
> > Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> > Cc: Eric B Munson <emunson@xxxxxxxxxx>
>
> Reviewed-by: Eric B Munson <emunson@xxxxxxxxxx>
Acked-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
I'm assuming that Shuah will process this one?
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