From: Hugh Dickins <hughd@google.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Andrea Arcangeli <aarcange@redhat.com>,
Andres Lagar-Cavilla <andreslc@google.com>,
Yang Shi <yang.shi@linaro.org>, Ning Qu <quning@gmail.com>,
Minchan Kim <minchan@kernel.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: [PATCH 21/31] huge tmpfs: show page team flag in pageflags
Date: Tue, 5 Apr 2016 14:49:49 -0700 (PDT) [thread overview]
Message-ID: <alpine.LSU.2.11.1604051448040.5965@eggly.anvils> (raw)
In-Reply-To: <alpine.LSU.2.11.1604051403210.5965@eggly.anvils>
From: Andres Lagar-Cavilla <andreslc@google.com>
For debugging and testing.
Signed-off-by: Andres Lagar-Cavilla <andreslc@google.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
---
This patchset has been based on v4.6-rc2: here we get a clash with
the addition of KPF_MOVABLE in current mmotm, not hard to fix up.
Documentation/vm/pagemap.txt | 2 ++
fs/proc/page.c | 6 ++++++
include/uapi/linux/kernel-page-flags.h | 3 ++-
tools/vm/page-types.c | 2 ++
4 files changed, 12 insertions(+), 1 deletion(-)
--- a/Documentation/vm/pagemap.txt
+++ b/Documentation/vm/pagemap.txt
@@ -71,6 +71,8 @@ There are four components to pagemap:
23. BALLOON
24. ZERO_PAGE
25. IDLE
+ 26. TEAM
+ 27. TEAM_PMD_MMAP (only if the whole team is mapped as a pmd at least once)
* /proc/kpagecgroup. This file contains a 64-bit inode number of the
memory cgroup each page is charged to, indexed by PFN. Only available when
--- a/fs/proc/page.c
+++ b/fs/proc/page.c
@@ -12,6 +12,7 @@
#include <linux/memcontrol.h>
#include <linux/mmu_notifier.h>
#include <linux/page_idle.h>
+#include <linux/pageteam.h>
#include <linux/kernel-page-flags.h>
#include <asm/uaccess.h>
#include "internal.h"
@@ -112,6 +113,11 @@ u64 stable_page_flags(struct page *page)
if (PageKsm(page))
u |= 1 << KPF_KSM;
+ if (PageTeam(page)) {
+ u |= 1 << KPF_TEAM;
+ if (page == team_head(page) && team_pmd_mapped(page))
+ u |= 1 << KPF_TEAM_PMD_MMAP;
+ }
/*
* compound pages: export both head/tail info
* they together define a compound page's start/end pos and order
--- a/include/uapi/linux/kernel-page-flags.h
+++ b/include/uapi/linux/kernel-page-flags.h
@@ -34,6 +34,7 @@
#define KPF_BALLOON 23
#define KPF_ZERO_PAGE 24
#define KPF_IDLE 25
-
+#define KPF_TEAM 26
+#define KPF_TEAM_PMD_MMAP 27
#endif /* _UAPILINUX_KERNEL_PAGE_FLAGS_H */
--- a/tools/vm/page-types.c
+++ b/tools/vm/page-types.c
@@ -133,6 +133,8 @@ static const char * const page_flag_name
[KPF_BALLOON] = "o:balloon",
[KPF_ZERO_PAGE] = "z:zero_page",
[KPF_IDLE] = "i:idle_page",
+ [KPF_TEAM] = "y:team",
+ [KPF_TEAM_PMD_MMAP] = "Y:team_pmd_mmap",
[KPF_RESERVED] = "r:reserved",
[KPF_MLOCKED] = "m:mlocked",
--
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next prev parent reply other threads:[~2016-04-05 21:49 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-05 21:10 [PATCH 00/31] huge tmpfs: THPagecache implemented by teams Hugh Dickins
2016-04-05 21:12 ` [PATCH 01/31] huge tmpfs: prepare counts in meminfo, vmstat and SysRq-m Hugh Dickins
2016-04-11 11:05 ` Kirill A. Shutemov
2016-04-17 2:28 ` Hugh Dickins
2016-04-05 21:13 ` [PATCH 02/31] huge tmpfs: include shmem freeholes in available memory Hugh Dickins
2016-04-05 21:15 ` [PATCH 03/31] huge tmpfs: huge=N mount option and /proc/sys/vm/shmem_huge Hugh Dickins
2016-04-11 11:17 ` Kirill A. Shutemov
2016-04-17 2:00 ` Hugh Dickins
2016-04-05 21:16 ` [PATCH 04/31] huge tmpfs: try to allocate huge pages, split into a team Hugh Dickins
2016-04-05 21:17 ` [PATCH 05/31] huge tmpfs: avoid team pages in a few places Hugh Dickins
2016-04-05 21:20 ` [PATCH 06/31] huge tmpfs: shrinker to migrate and free underused holes Hugh Dickins
2016-04-05 21:21 ` [PATCH 07/31] huge tmpfs: get_unmapped_area align & fault supply huge page Hugh Dickins
2016-04-05 21:23 ` [PATCH 08/31] huge tmpfs: try_to_unmap_one use page_check_address_transhuge Hugh Dickins
2016-04-05 21:24 ` [PATCH 09/31] huge tmpfs: avoid premature exposure of new pagetable Hugh Dickins
2016-04-11 11:54 ` Kirill A. Shutemov
2016-04-17 1:49 ` Hugh Dickins
2016-04-05 21:25 ` [PATCH 10/31] huge tmpfs: map shmem by huge page pmd or by page team ptes Hugh Dickins
2016-04-05 21:29 ` [PATCH 11/31] huge tmpfs: disband split huge pmds on race or memory failure Hugh Dickins
2016-04-05 21:33 ` [PATCH 12/31] huge tmpfs: extend get_user_pages_fast to shmem pmd Hugh Dickins
2016-04-06 7:00 ` Ingo Molnar
2016-04-07 2:53 ` Hugh Dickins
2016-04-13 8:58 ` Ingo Molnar
2016-04-05 21:34 ` [PATCH 13/31] huge tmpfs: use Unevictable lru with variable hpage_nr_pages Hugh Dickins
2016-04-05 21:35 ` [PATCH 14/31] huge tmpfs: fix Mlocked meminfo, track huge & unhuge mlocks Hugh Dickins
2016-04-05 21:37 ` [PATCH 15/31] huge tmpfs: fix Mapped meminfo, track huge & unhuge mappings Hugh Dickins
2016-04-05 21:39 ` [PATCH 16/31] kvm: plumb return of hva when resolving page fault Hugh Dickins
2016-04-05 21:41 ` [PATCH 17/31] kvm: teach kvm to map page teams as huge pages Hugh Dickins
2016-04-05 23:37 ` Paolo Bonzini
2016-04-06 1:12 ` Hugh Dickins
2016-04-06 6:47 ` Paolo Bonzini
2016-04-06 6:56 ` Andres Lagar-Cavilla
2016-04-05 21:44 ` [PATCH 18/31] huge tmpfs: mem_cgroup move charge on shmem " Hugh Dickins
2016-04-05 21:46 ` [PATCH 19/31] huge tmpfs: mem_cgroup shmem_pmdmapped accounting Hugh Dickins
2016-04-05 21:47 ` [PATCH 20/31] huge tmpfs: mem_cgroup shmem_hugepages accounting Hugh Dickins
2016-04-05 21:49 ` Hugh Dickins [this message]
2016-04-05 21:51 ` [PATCH 22/31] huge tmpfs: /proc/<pid>/smaps show ShmemHugePages Hugh Dickins
2016-04-05 21:53 ` [PATCH 23/31] huge tmpfs recovery: framework for reconstituting huge pages Hugh Dickins
2016-04-06 10:28 ` Mika Penttilä
2016-04-07 2:05 ` Hugh Dickins
2016-04-05 21:54 ` [PATCH 24/31] huge tmpfs recovery: shmem_recovery_populate to fill huge page Hugh Dickins
2016-04-05 21:56 ` [PATCH 25/31] huge tmpfs recovery: shmem_recovery_remap & remap_team_by_pmd Hugh Dickins
2016-04-05 21:58 ` [PATCH 26/31] huge tmpfs recovery: shmem_recovery_swapin to read from swap Hugh Dickins
2016-04-05 22:00 ` [PATCH 27/31] huge tmpfs recovery: tweak shmem_getpage_gfp to fill team Hugh Dickins
2016-04-05 22:02 ` [PATCH 28/31] huge tmpfs recovery: debugfs stats to complete this phase Hugh Dickins
2016-04-05 22:03 ` [PATCH 29/31] huge tmpfs recovery: page migration call back into shmem Hugh Dickins
2016-04-05 22:05 ` [PATCH 30/31] huge tmpfs: shmem_huge_gfpmask and shmem_recovery_gfpmask Hugh Dickins
2016-04-05 22:07 ` [PATCH 31/31] huge tmpfs: no kswapd by default on sync allocations Hugh Dickins
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