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

Arun KS arunks at codeaurora.org
Mon Oct 22 21:48:26 PDT 2018


On 2018-10-23 09:45, Joe Perches wrote:
> On Mon, 2018-10-22 at 22:53 +0530, Arun KS wrote:
>> Remove managed_page_count_lock spinlock and instead use atomic
>> variables.
> 

Hello Joe,
> Perhaps better to define and use macros for the accesses
> instead of specific uses of atomic_long_<inc/dec/read>
> 
> Something like:
> 
> #define totalram_pages()	(unsigned 
> long)atomic_long_read(&_totalram_pages)
> #define totalram_pages_inc()	(unsigned 
> long)atomic_long_inc(&_totalram_pages)
> #define totalram_pages_dec()	(unsigned 
> long)atomic_long_dec(&_totalram_pages)

That sounds like a nice idea.

Regards,
Arun



More information about the kexec mailing list