On Fri, Nov 06, 2015 at 02:39:00PM -0800, Andrew Morton wrote:
> On Fri, 6 Nov 2015 12:29:21 +0200 "Kirill A. Shutemov"
> wrote:
>
> > > page_mapcount() is getting pretty bad too.
> >
> > Do you want me to uninline slow path (PageCompound())?
>
> I guess so. Uninlining all of page_mapcount()
On Fri, 6 Nov 2015 12:29:21 +0200 "Kirill A. Shutemov"
wrote:
> > page_mapcount() is getting pretty bad too.
>
> Do you want me to uninline slow path (PageCompound())?
I guess so. Uninlining all of page_mapcount() does this:
gcc-4.4.4:
textdata bss dec hex filename
97370
On Thu, Nov 05, 2015 at 04:32:11PM -0800, Andrew Morton wrote:
> On Tue, 3 Nov 2015 17:26:15 +0200 "Kirill A. Shutemov"
> wrote:
>
> > I've missed two simlar codepath which need some preparation to work well
> > with reworked THP refcounting.
> >
> > Both page_referenced() and page_idle_clear_
On Tue, 3 Nov 2015 17:26:15 +0200 "Kirill A. Shutemov"
wrote:
> I've missed two simlar codepath which need some preparation to work well
> with reworked THP refcounting.
>
> Both page_referenced() and page_idle_clear_pte_refs_one() assume that
> THP can only be mapped with PMD, so there's no r
On Thu, Nov 05, 2015 at 07:03:24PM +0300, Vladimir Davydov wrote:
> On Tue, Nov 03, 2015 at 05:26:15PM +0200, Kirill A. Shutemov wrote:
> ...
> > @@ -812,60 +812,104 @@ static int page_referenced_one(struct page *page,
> > struct vm_area_struct *vma,
> > spinlock_t *ptl;
> > int referenced
On Thu, Nov 05, 2015 at 02:58:38PM +0200, Kirill A. Shutemov wrote:
> Okay. Could you prepare the patch?
OK, give me some time.
Thanks,
Vladimir
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On Tue, Nov 03, 2015 at 05:26:15PM +0200, Kirill A. Shutemov wrote:
...
> @@ -812,60 +812,104 @@ static int page_referenced_one(struct page *page,
> struct vm_area_struct *vma,
> spinlock_t *ptl;
> int referenced = 0;
> struct page_referenced_arg *pra = arg;
> + pgd_t *pgd;
>
On Thu, Nov 05, 2015 at 03:53:54PM +0300, Vladimir Davydov wrote:
> On Thu, Nov 05, 2015 at 02:36:06PM +0200, Kirill A. Shutemov wrote:
> > On Thu, Nov 05, 2015 at 03:07:26PM +0300, Vladimir Davydov wrote:
> > > @@ -849,30 +836,23 @@ static int page_referenced_one(struct page *page,
> > > struct v
On Thu, Nov 05, 2015 at 02:36:06PM +0200, Kirill A. Shutemov wrote:
> On Thu, Nov 05, 2015 at 03:07:26PM +0300, Vladimir Davydov wrote:
> > @@ -849,30 +836,23 @@ static int page_referenced_one(struct page *page,
> > struct vm_area_struct *vma,
> > if (pmd_page(*pmd) != page)
> >
On Thu, Nov 05, 2015 at 03:07:26PM +0300, Vladimir Davydov wrote:
> @@ -849,30 +836,23 @@ static int page_referenced_one(struct page *page,
> struct vm_area_struct *vma,
> if (pmd_page(*pmd) != page)
> goto unlock_pmd;
>
> - if (vma->vm_flags & VM_
On Thu, Nov 05, 2015 at 11:24:59AM +0200, Kirill A. Shutemov wrote:
> On Thu, Nov 05, 2015 at 12:10:13PM +0300, Vladimir Davydov wrote:
> > On Tue, Nov 03, 2015 at 05:26:15PM +0200, Kirill A. Shutemov wrote:
> > ...
> > > @@ -56,23 +56,69 @@ static int page_idle_clear_pte_refs_one(struct page
> >
On Thu, Nov 05, 2015 at 12:10:13PM +0300, Vladimir Davydov wrote:
> On Tue, Nov 03, 2015 at 05:26:15PM +0200, Kirill A. Shutemov wrote:
> ...
> > @@ -56,23 +56,69 @@ static int page_idle_clear_pte_refs_one(struct page
> > *page,
> > {
> > struct mm_struct *mm = vma->vm_mm;
> > spinlock_t
On Tue, Nov 03, 2015 at 05:26:15PM +0200, Kirill A. Shutemov wrote:
...
> @@ -56,23 +56,69 @@ static int page_idle_clear_pte_refs_one(struct page *page,
> {
> struct mm_struct *mm = vma->vm_mm;
> spinlock_t *ptl;
> + pgd_t *pgd;
> + pud_t *pud;
> pmd_t *pmd;
> pte_t
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