[PATCH] mm: convert totalram_pages, totalhigh_pages and managed_pages to atomic.

Arun Sudhilal getarunks at gmail.com
Mon Oct 22 21:46:51 PDT 2018


On Mon, Oct 22, 2018 at 11:41 PM Michal Hocko <mhocko at kernel.org> wrote:
>
> On Mon 22-10-18 22:53:22, Arun KS wrote:
> > Remove managed_page_count_lock spinlock and instead use atomic
> > variables.
>

Hello Michal,
> I assume this has been auto-generated. If yes, it would be better to
> mention the script so that people can review it and regenerate for
> comparision. Such a large change is hard to review manually.

Changes were made partially with script.  For totalram_pages and
totalhigh_pages,

find dir -type f -exec sed -i
's/totalram_pages/atomic_long_read(\&totalram_pages)/g' {} \;
find dir -type f -exec sed -i
's/totalhigh_pages/atomic_long_read(\&totalhigh_pages)/g' {} \;

For managed_pages it was mostly manual edits after using,
find mm/ -type f -exec sed -i
's/zone->managed_pages/atomic_long_read(\&zone->managed_pages)/g' {}
\;

Regards,
Arun

> --
> Michal Hocko
> SUSE Labs



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