From: Andrew Morton <akpm@linux-foundation.org>
To: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Andrea Arcangeli <aarcange@redhat.com>,
Hugh Dickins <hughd@google.com>,
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
Sasha Levin <sasha.levin@oracle.com>,
Minchan Kim <minchan@kernel.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Vladimir Davydov <vdavydov@parallels.com>
Subject: Re: [PATCH 4/4] mm: prepare page_referenced() and page_idle to new THP refcounting
Date: Fri, 6 Nov 2015 14:39:00 -0800 [thread overview]
Message-ID: <20151106143900.e61c38b5bf3e44547873d9d2@linux-foundation.org> (raw)
In-Reply-To: <20151106102921.GA6463@node.shutemov.name>
On Fri, 6 Nov 2015 12:29:21 +0200 "Kirill A. Shutemov" <kirill@shutemov.name> 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:
text data bss dec hex filename
973702 273954 831512 2079168 1fb9c0 mm/built-in.o-before
970148 273954 831000 2075102 1fa9de mm/built-in.o-after
That's quite a bit of bloat.
I don't know why bss changed; this usually (always?) happens. Seems
bogus.
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next prev parent reply other threads:[~2015-11-06 22:39 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-03 15:26 [PATCH 0/4] Bugfixes for THP refcounting Kirill A. Shutemov
2015-11-03 15:26 ` [PATCH 1/4] mm: do not crash on PageDoubleMap() for non-head pages Kirill A. Shutemov
2015-11-03 15:26 ` [PATCH 2/4] mm: duplicate rmap reference for hugetlb pages as compound Kirill A. Shutemov
2015-11-03 15:26 ` [PATCH 3/4] thp: fix split vs. unmap race Kirill A. Shutemov
2015-11-03 15:26 ` [PATCH 4/4] mm: prepare page_referenced() and page_idle to new THP refcounting Kirill A. Shutemov
2015-11-05 9:10 ` Vladimir Davydov
2015-11-05 9:24 ` Kirill A. Shutemov
2015-11-05 12:07 ` Vladimir Davydov
2015-11-05 12:36 ` Kirill A. Shutemov
2015-11-05 12:53 ` Vladimir Davydov
2015-11-05 12:58 ` Kirill A. Shutemov
2015-11-05 16:31 ` Vladimir Davydov
2015-11-06 14:37 ` [PATCH] mm: add page_check_address_transhuge helper Vladimir Davydov
2015-11-06 15:24 ` Kirill A. Shutemov
2015-11-05 16:03 ` [PATCH 4/4] mm: prepare page_referenced() and page_idle to new THP refcounting Vladimir Davydov
2015-11-05 17:27 ` Kirill A. Shutemov
2015-11-06 0:32 ` Andrew Morton
2015-11-06 10:29 ` Kirill A. Shutemov
2015-11-06 22:39 ` Andrew Morton [this message]
2015-11-08 23:40 ` Kirill A. Shutemov
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