From: Vineet Gupta <Vineet.Gupta1@synopsys.com>
To: Andrew Morton <akpm@linux-foundation.org>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Mel Gorman <mgorman@suse.de>,
Matthew Wilcox <matthew.r.wilcox@intel.com>,
Minchan Kim <minchan@kernel.org>
Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, Vineet Gupta <Vineet.Gupta1@synopsys.com>
Subject: [PATCH v2 03/12] ARC: mm: Introduce PTE_SPECIAL
Date: Tue, 22 Sep 2015 16:04:47 +0530 [thread overview]
Message-ID: <1442918096-17454-4-git-send-email-vgupta@synopsys.com> (raw)
In-Reply-To: <1442918096-17454-1-git-send-email-vgupta@synopsys.com>
Needed for THP, but will also come in handy for fast GUP later
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
---
arch/arc/include/asm/pgtable.h | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
index 481359fe56ae..431a83329324 100644
--- a/arch/arc/include/asm/pgtable.h
+++ b/arch/arc/include/asm/pgtable.h
@@ -61,6 +61,7 @@
#define _PAGE_WRITE (1<<4) /* Page has user write perm (H) */
#define _PAGE_READ (1<<5) /* Page has user read perm (H) */
#define _PAGE_DIRTY (1<<6) /* Page modified (dirty) (S) */
+#define _PAGE_SPECIAL (1<<7)
#define _PAGE_GLOBAL (1<<8) /* Page is global (H) */
#define _PAGE_PRESENT (1<<10) /* TLB entry is valid (H) */
@@ -72,6 +73,7 @@
#define _PAGE_READ (1<<3) /* Page has user read perm (H) */
#define _PAGE_ACCESSED (1<<4) /* Page is accessed (S) */
#define _PAGE_DIRTY (1<<5) /* Page modified (dirty) (S) */
+#define _PAGE_SPECIAL (1<<6)
#if (CONFIG_ARC_MMU_VER >= 4)
#define _PAGE_WTHRU (1<<7) /* Page cache mode write-thru (H) */
@@ -292,7 +294,7 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep)
#define pte_write(pte) (pte_val(pte) & _PAGE_WRITE)
#define pte_dirty(pte) (pte_val(pte) & _PAGE_DIRTY)
#define pte_young(pte) (pte_val(pte) & _PAGE_ACCESSED)
-#define pte_special(pte) (0)
+#define pte_special(pte) (pte_val(pte) & _PAGE_SPECIAL)
#define PTE_BIT_FUNC(fn, op) \
static inline pte_t pte_##fn(pte_t pte) { pte_val(pte) op; return pte; }
@@ -305,8 +307,9 @@ PTE_BIT_FUNC(mkold, &= ~(_PAGE_ACCESSED));
PTE_BIT_FUNC(mkyoung, |= (_PAGE_ACCESSED));
PTE_BIT_FUNC(exprotect, &= ~(_PAGE_EXECUTE));
PTE_BIT_FUNC(mkexec, |= (_PAGE_EXECUTE));
+PTE_BIT_FUNC(mkspecial, |= (_PAGE_SPECIAL));
-static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
+#define __HAVE_ARCH_PTE_SPECIAL
static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
{
--
1.9.1
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2015-09-22 10:35 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-22 10:34 [PATCH v2 00/12] THP support for ARC Vineet Gupta
2015-09-22 10:34 ` [PATCH v2 01/12] ARC: mm: switch pgtable_to to pte_t * Vineet Gupta
2015-09-22 10:34 ` [PATCH v2 02/12] ARC: mm: pte flags comsetic cleanups, comments Vineet Gupta
2015-09-22 10:34 ` Vineet Gupta [this message]
2015-09-22 10:34 ` [PATCH v2 04/12] Documentation/features/vm: pte_special now supported by ARC Vineet Gupta
2015-09-22 10:34 ` [PATCH v2 05/12] ARCv2: mm: THP support Vineet Gupta
2015-09-22 10:34 ` [PATCH v2 06/12] ARCv2: mm: THP: boot validation/reporting Vineet Gupta
2015-09-22 10:34 ` [PATCH v2 07/12] Documentation/features/vm: THP now supported by ARC Vineet Gupta
2015-09-22 10:34 ` [PATCH v2 08/12] mm: move some code around Vineet Gupta
2015-10-09 9:48 ` Kirill A. Shutemov
2015-10-09 10:01 ` Vineet Gupta
2015-09-22 10:34 ` [PATCH v2 09/12] mm,thp: reduce ifdef'ery for THP in generic code Vineet Gupta
2015-10-09 9:53 ` Kirill A. Shutemov
2015-10-09 10:10 ` Vineet Gupta
2015-10-09 10:28 ` Vineet Gupta
2015-09-22 10:34 ` [PATCH v2 10/12] mm,thp: introduce flush_pmd_tlb_range Vineet Gupta
2015-10-09 10:08 ` Kirill A. Shutemov
2015-10-09 10:54 ` Vineet Gupta
2015-09-22 10:34 ` [PATCH v2 11/12] ARCv2: mm: THP: Implement flush_pmd_tlb_range() optimization Vineet Gupta
2015-09-22 10:34 ` [PATCH v2 12/12] ARCv2: Add a DT which enables THP Vineet Gupta
2015-10-01 6:02 ` [PATCH v2 00/12] THP support for ARC Vineet Gupta
2015-10-09 9:33 ` Vineet Gupta
2015-10-09 10:10 ` Kirill A. Shutemov
2015-10-09 11:29 ` Vineet Gupta
2015-10-09 11:43 ` Kirill A. Shutemov
2015-10-09 11:52 ` Vineet Gupta
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1442918096-17454-4-git-send-email-vgupta@synopsys.com \
--to=vineet.gupta1@synopsys.com \
--cc=akpm@linux-foundation.org \
--cc=aneesh.kumar@linux.vnet.ibm.com \
--cc=kirill.shutemov@linux.intel.com \
--cc=linux-arch@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=matthew.r.wilcox@intel.com \
--cc=mgorman@suse.de \
--cc=minchan@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).