* [PATCH] mm: memcontrol: Expose THP events on a per-memcg basis
@ 2019-01-29 20:58 Chris Down
2019-01-29 22:15 ` Johannes Weiner
` (2 more replies)
0 siblings, 3 replies; 5+ messages in thread
From: Chris Down @ 2019-01-29 20:58 UTC (permalink / raw)
To: Andrew Morton
Cc: Johannes Weiner, Tejun Heo, Roman Gushchin, linux-kernel,
cgroups, linux-mm, kernel-team
Currently THP allocation events data is fairly opaque, since you can
only get it system-wide. This patch makes it easier to reason about
transparent hugepage behaviour on a per-memcg basis.
For anonymous THP-backed pages, we already have MEMCG_RSS_HUGE in v1,
which is used for v1's rss_huge [sic]. This is reused here as it's
fairly involved to untangle NR_ANON_THPS right now to make it
per-memcg, since right now some of this is delegated to rmap before we
have any memcg actually assigned to the page. It's a good idea to rework
that, but let's leave untangling THP allocation for a future patch.
Signed-off-by: Chris Down <chris@chrisdown.name>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Roman Gushchin <guro@fb.com>
Cc: linux-kernel@vger.kernel.org
Cc: cgroups@vger.kernel.org
Cc: linux-mm@kvack.org
Cc: kernel-team@fb.com
---
Documentation/admin-guide/cgroup-v2.rst | 14 ++++++++++++++
mm/huge_memory.c | 2 ++
mm/khugepaged.c | 2 ++
mm/memcontrol.c | 13 +++++++++++++
4 files changed, 31 insertions(+)
diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst
index 7bf3f129c68b..b6989b39ed8e 100644
--- a/Documentation/admin-guide/cgroup-v2.rst
+++ b/Documentation/admin-guide/cgroup-v2.rst
@@ -1189,6 +1189,10 @@ PAGE_SIZE multiple when read back.
Amount of cached filesystem data that was modified and
is currently being written back to disk
+ anon_thp
+ Amount of memory used in anonymous mappings backed by
+ transparent hugepages
+
inactive_anon, active_anon, inactive_file, active_file, unevictable
Amount of memory, swap-backed and filesystem-backed,
on the internal memory management lists used by the
@@ -1248,6 +1252,16 @@ PAGE_SIZE multiple when read back.
Amount of reclaimed lazyfree pages
+ thp_fault_alloc
+
+ Number of transparent hugepages which were allocated to satisfy
+ a page fault, including COW faults
+
+ thp_collapse_alloc
+
+ Number of transparent hugepages which were allocated to
+ allow collapsing an existing range of pages
+
memory.swap.current
A read-only single value file which exists on non-root
cgroups.
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index f5f1d4324fe2..6cb7a748aa33 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -617,6 +617,7 @@ static vm_fault_t __do_huge_pmd_anonymous_page(struct vm_fault *vmf,
mm_inc_nr_ptes(vma->vm_mm);
spin_unlock(vmf->ptl);
count_vm_event(THP_FAULT_ALLOC);
+ count_memcg_events(memcg, THP_FAULT_ALLOC, 1);
}
return 0;
@@ -1339,6 +1340,7 @@ vm_fault_t do_huge_pmd_wp_page(struct vm_fault *vmf, pmd_t orig_pmd)
}
count_vm_event(THP_FAULT_ALLOC);
+ count_memcg_events(memcg, THP_FAULT_ALLOC, 1);
if (!page)
clear_huge_page(new_page, vmf->address, HPAGE_PMD_NR);
diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index ceb242ca6ef6..54f3d33f897a 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -1075,6 +1075,7 @@ static void collapse_huge_page(struct mm_struct *mm,
BUG_ON(!pmd_none(*pmd));
page_add_new_anon_rmap(new_page, vma, address, true);
mem_cgroup_commit_charge(new_page, memcg, false, true);
+ count_memcg_events(memcg, THP_COLLAPSE_ALLOC, 1);
lru_cache_add_active_or_unevictable(new_page, vma);
pgtable_trans_huge_deposit(mm, pmd, pgtable);
set_pmd_at(mm, address, pmd, _pmd);
@@ -1503,6 +1504,7 @@ static void collapse_shmem(struct mm_struct *mm,
page_ref_add(new_page, HPAGE_PMD_NR - 1);
set_page_dirty(new_page);
mem_cgroup_commit_charge(new_page, memcg, false, true);
+ count_memcg_events(memcg, THP_COLLAPSE_ALLOC, 1);
lru_cache_add_anon(new_page);
/*
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 18f4aefbe0bf..2f4fe2fb9046 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5603,6 +5603,15 @@ static int memory_stat_show(struct seq_file *m, void *v)
seq_printf(m, "file_writeback %llu\n",
(u64)acc.stat[NR_WRITEBACK] * PAGE_SIZE);
+ /*
+ * TODO: We should eventually replace our own MEMCG_RSS_HUGE counter
+ * with the NR_ANON_THP vm counter, but right now it's a pain in the
+ * arse because it requires migrating the work out of rmap to a place
+ * where the page->mem_cgroup is set up and stable.
+ */
+ seq_printf(m, "anon_thp %llu\n",
+ (u64)acc.stat[MEMCG_RSS_HUGE] * PAGE_SIZE);
+
for (i = 0; i < NR_LRU_LISTS; i++)
seq_printf(m, "%s %llu\n", mem_cgroup_lru_names[i],
(u64)acc.lru_pages[i] * PAGE_SIZE);
@@ -5634,6 +5643,10 @@ static int memory_stat_show(struct seq_file *m, void *v)
seq_printf(m, "pglazyfree %lu\n", acc.events[PGLAZYFREE]);
seq_printf(m, "pglazyfreed %lu\n", acc.events[PGLAZYFREED]);
+ seq_printf(m, "thp_fault_alloc %lu\n", acc.events[THP_FAULT_ALLOC]);
+ seq_printf(m, "thp_collapse_alloc %lu\n",
+ acc.events[THP_COLLAPSE_ALLOC]);
+
return 0;
}
--
2.20.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH] mm: memcontrol: Expose THP events on a per-memcg basis
2019-01-29 20:58 [PATCH] mm: memcontrol: Expose THP events on a per-memcg basis Chris Down
@ 2019-01-29 22:15 ` Johannes Weiner
2019-02-01 1:39 ` kbuild test robot
2019-02-01 2:57 ` kbuild test robot
2 siblings, 0 replies; 5+ messages in thread
From: Johannes Weiner @ 2019-01-29 22:15 UTC (permalink / raw)
To: Chris Down
Cc: Andrew Morton, Tejun Heo, Roman Gushchin, linux-kernel, cgroups,
linux-mm, kernel-team
On Tue, Jan 29, 2019 at 03:58:52PM -0500, Chris Down wrote:
> Currently THP allocation events data is fairly opaque, since you can
> only get it system-wide. This patch makes it easier to reason about
> transparent hugepage behaviour on a per-memcg basis.
>
> For anonymous THP-backed pages, we already have MEMCG_RSS_HUGE in v1,
> which is used for v1's rss_huge [sic]. This is reused here as it's
> fairly involved to untangle NR_ANON_THPS right now to make it
> per-memcg, since right now some of this is delegated to rmap before we
> have any memcg actually assigned to the page. It's a good idea to rework
> that, but let's leave untangling THP allocation for a future patch.
>
> Signed-off-by: Chris Down <chris@chrisdown.name>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Johannes Weiner <hannes@cmpxchg.org>
> Cc: Tejun Heo <tj@kernel.org>
> Cc: Roman Gushchin <guro@fb.com>
> Cc: linux-kernel@vger.kernel.org
> Cc: cgroups@vger.kernel.org
> Cc: linux-mm@kvack.org
> Cc: kernel-team@fb.com
Looks good to me. It's useful to know if a cgroup is getting the THP
coverage and allocation policy it's asking for.
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
The fallback numbers could be useful as well, but they're tricky to
obtain as there isn't an obvious memcg context. We can do them later.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] mm: memcontrol: Expose THP events on a per-memcg basis
2019-01-29 20:58 [PATCH] mm: memcontrol: Expose THP events on a per-memcg basis Chris Down
2019-01-29 22:15 ` Johannes Weiner
@ 2019-02-01 1:39 ` kbuild test robot
2019-02-01 2:57 ` kbuild test robot
2 siblings, 0 replies; 5+ messages in thread
From: kbuild test robot @ 2019-02-01 1:39 UTC (permalink / raw)
To: Chris Down
Cc: kbuild-all, Andrew Morton, Johannes Weiner, Tejun Heo,
Roman Gushchin, linux-kernel, cgroups, linux-mm, kernel-team
[-- Attachment #1: Type: text/plain, Size: 5201 bytes --]
Hi Chris,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on linus/master]
[also build test ERROR on v5.0-rc4]
[cannot apply to next-20190131]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Chris-Down/mm-memcontrol-Expose-THP-events-on-a-per-memcg-basis/20190201-022143
config: x86_64-randconfig-j1-01290405 (attached as .config)
compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64
All errors (new ones prefixed by >>):
mm/memcontrol.c: In function 'memory_stat_show':
>> mm/memcontrol.c:5625:52: error: 'THP_FAULT_ALLOC' undeclared (first use in this function)
seq_printf(m, "thp_fault_alloc %lu\n", acc.events[THP_FAULT_ALLOC]);
^
mm/memcontrol.c:5625:52: note: each undeclared identifier is reported only once for each function it appears in
mm/memcontrol.c:5627:17: error: 'THP_COLLAPSE_ALLOC' undeclared (first use in this function)
acc.events[THP_COLLAPSE_ALLOC]);
^
vim +/THP_FAULT_ALLOC +5625 mm/memcontrol.c
5541
5542 static int memory_stat_show(struct seq_file *m, void *v)
5543 {
5544 struct mem_cgroup *memcg = mem_cgroup_from_css(seq_css(m));
5545 struct accumulated_stats acc;
5546 int i;
5547
5548 /*
5549 * Provide statistics on the state of the memory subsystem as
5550 * well as cumulative event counters that show past behavior.
5551 *
5552 * This list is ordered following a combination of these gradients:
5553 * 1) generic big picture -> specifics and details
5554 * 2) reflecting userspace activity -> reflecting kernel heuristics
5555 *
5556 * Current memory state:
5557 */
5558
5559 memset(&acc, 0, sizeof(acc));
5560 acc.stats_size = MEMCG_NR_STAT;
5561 acc.events_size = NR_VM_EVENT_ITEMS;
5562 accumulate_memcg_tree(memcg, &acc);
5563
5564 seq_printf(m, "anon %llu\n",
5565 (u64)acc.stat[MEMCG_RSS] * PAGE_SIZE);
5566 seq_printf(m, "file %llu\n",
5567 (u64)acc.stat[MEMCG_CACHE] * PAGE_SIZE);
5568 seq_printf(m, "kernel_stack %llu\n",
5569 (u64)acc.stat[MEMCG_KERNEL_STACK_KB] * 1024);
5570 seq_printf(m, "slab %llu\n",
5571 (u64)(acc.stat[NR_SLAB_RECLAIMABLE] +
5572 acc.stat[NR_SLAB_UNRECLAIMABLE]) * PAGE_SIZE);
5573 seq_printf(m, "sock %llu\n",
5574 (u64)acc.stat[MEMCG_SOCK] * PAGE_SIZE);
5575
5576 seq_printf(m, "shmem %llu\n",
5577 (u64)acc.stat[NR_SHMEM] * PAGE_SIZE);
5578 seq_printf(m, "file_mapped %llu\n",
5579 (u64)acc.stat[NR_FILE_MAPPED] * PAGE_SIZE);
5580 seq_printf(m, "file_dirty %llu\n",
5581 (u64)acc.stat[NR_FILE_DIRTY] * PAGE_SIZE);
5582 seq_printf(m, "file_writeback %llu\n",
5583 (u64)acc.stat[NR_WRITEBACK] * PAGE_SIZE);
5584
5585 /*
5586 * TODO: We should eventually replace our own MEMCG_RSS_HUGE counter
5587 * with the NR_ANON_THP vm counter, but right now it's a pain in the
5588 * arse because it requires migrating the work out of rmap to a place
5589 * where the page->mem_cgroup is set up and stable.
5590 */
5591 seq_printf(m, "anon_thp %llu\n",
5592 (u64)acc.stat[MEMCG_RSS_HUGE] * PAGE_SIZE);
5593
5594 for (i = 0; i < NR_LRU_LISTS; i++)
5595 seq_printf(m, "%s %llu\n", mem_cgroup_lru_names[i],
5596 (u64)acc.lru_pages[i] * PAGE_SIZE);
5597
5598 seq_printf(m, "slab_reclaimable %llu\n",
5599 (u64)acc.stat[NR_SLAB_RECLAIMABLE] * PAGE_SIZE);
5600 seq_printf(m, "slab_unreclaimable %llu\n",
5601 (u64)acc.stat[NR_SLAB_UNRECLAIMABLE] * PAGE_SIZE);
5602
5603 /* Accumulated memory events */
5604
5605 seq_printf(m, "pgfault %lu\n", acc.events[PGFAULT]);
5606 seq_printf(m, "pgmajfault %lu\n", acc.events[PGMAJFAULT]);
5607
5608 seq_printf(m, "workingset_refault %lu\n",
5609 acc.stat[WORKINGSET_REFAULT]);
5610 seq_printf(m, "workingset_activate %lu\n",
5611 acc.stat[WORKINGSET_ACTIVATE]);
5612 seq_printf(m, "workingset_nodereclaim %lu\n",
5613 acc.stat[WORKINGSET_NODERECLAIM]);
5614
5615 seq_printf(m, "pgrefill %lu\n", acc.events[PGREFILL]);
5616 seq_printf(m, "pgscan %lu\n", acc.events[PGSCAN_KSWAPD] +
5617 acc.events[PGSCAN_DIRECT]);
5618 seq_printf(m, "pgsteal %lu\n", acc.events[PGSTEAL_KSWAPD] +
5619 acc.events[PGSTEAL_DIRECT]);
5620 seq_printf(m, "pgactivate %lu\n", acc.events[PGACTIVATE]);
5621 seq_printf(m, "pgdeactivate %lu\n", acc.events[PGDEACTIVATE]);
5622 seq_printf(m, "pglazyfree %lu\n", acc.events[PGLAZYFREE]);
5623 seq_printf(m, "pglazyfreed %lu\n", acc.events[PGLAZYFREED]);
5624
> 5625 seq_printf(m, "thp_fault_alloc %lu\n", acc.events[THP_FAULT_ALLOC]);
5626 seq_printf(m, "thp_collapse_alloc %lu\n",
5627 acc.events[THP_COLLAPSE_ALLOC]);
5628
5629 return 0;
5630 }
5631
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 27383 bytes --]
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] mm: memcontrol: Expose THP events on a per-memcg basis
2019-01-29 20:58 [PATCH] mm: memcontrol: Expose THP events on a per-memcg basis Chris Down
2019-01-29 22:15 ` Johannes Weiner
2019-02-01 1:39 ` kbuild test robot
@ 2019-02-01 2:57 ` kbuild test robot
2019-02-01 2:58 ` Chris Down
2 siblings, 1 reply; 5+ messages in thread
From: kbuild test robot @ 2019-02-01 2:57 UTC (permalink / raw)
To: Chris Down
Cc: kbuild-all, Andrew Morton, Johannes Weiner, Tejun Heo,
Roman Gushchin, linux-kernel, cgroups, linux-mm, kernel-team
[-- Attachment #1: Type: text/plain, Size: 5540 bytes --]
Hi Chris,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on linus/master]
[also build test ERROR on v5.0-rc4]
[cannot apply to next-20190131]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Chris-Down/mm-memcontrol-Expose-THP-events-on-a-per-memcg-basis/20190201-022143
config: sh-allmodconfig (attached as .config)
compiler: sh4-linux-gnu-gcc (Debian 8.2.0-11) 8.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=8.2.0 make.cross ARCH=sh
All errors (new ones prefixed by >>):
mm/memcontrol.c: In function 'memory_stat_show':
>> mm/memcontrol.c:5625:52: error: 'THP_FAULT_ALLOC' undeclared (first use in this function); did you mean 'THP_FILE_ALLOC'?
seq_printf(m, "thp_fault_alloc %lu\n", acc.events[THP_FAULT_ALLOC]);
^~~~~~~~~~~~~~~
THP_FILE_ALLOC
mm/memcontrol.c:5625:52: note: each undeclared identifier is reported only once for each function it appears in
>> mm/memcontrol.c:5627:17: error: 'THP_COLLAPSE_ALLOC' undeclared (first use in this function); did you mean 'THP_FILE_ALLOC'?
acc.events[THP_COLLAPSE_ALLOC]);
^~~~~~~~~~~~~~~~~~
THP_FILE_ALLOC
vim +5625 mm/memcontrol.c
5541
5542 static int memory_stat_show(struct seq_file *m, void *v)
5543 {
5544 struct mem_cgroup *memcg = mem_cgroup_from_css(seq_css(m));
5545 struct accumulated_stats acc;
5546 int i;
5547
5548 /*
5549 * Provide statistics on the state of the memory subsystem as
5550 * well as cumulative event counters that show past behavior.
5551 *
5552 * This list is ordered following a combination of these gradients:
5553 * 1) generic big picture -> specifics and details
5554 * 2) reflecting userspace activity -> reflecting kernel heuristics
5555 *
5556 * Current memory state:
5557 */
5558
5559 memset(&acc, 0, sizeof(acc));
5560 acc.stats_size = MEMCG_NR_STAT;
5561 acc.events_size = NR_VM_EVENT_ITEMS;
5562 accumulate_memcg_tree(memcg, &acc);
5563
5564 seq_printf(m, "anon %llu\n",
5565 (u64)acc.stat[MEMCG_RSS] * PAGE_SIZE);
5566 seq_printf(m, "file %llu\n",
5567 (u64)acc.stat[MEMCG_CACHE] * PAGE_SIZE);
5568 seq_printf(m, "kernel_stack %llu\n",
5569 (u64)acc.stat[MEMCG_KERNEL_STACK_KB] * 1024);
5570 seq_printf(m, "slab %llu\n",
5571 (u64)(acc.stat[NR_SLAB_RECLAIMABLE] +
5572 acc.stat[NR_SLAB_UNRECLAIMABLE]) * PAGE_SIZE);
5573 seq_printf(m, "sock %llu\n",
5574 (u64)acc.stat[MEMCG_SOCK] * PAGE_SIZE);
5575
5576 seq_printf(m, "shmem %llu\n",
5577 (u64)acc.stat[NR_SHMEM] * PAGE_SIZE);
5578 seq_printf(m, "file_mapped %llu\n",
5579 (u64)acc.stat[NR_FILE_MAPPED] * PAGE_SIZE);
5580 seq_printf(m, "file_dirty %llu\n",
5581 (u64)acc.stat[NR_FILE_DIRTY] * PAGE_SIZE);
5582 seq_printf(m, "file_writeback %llu\n",
5583 (u64)acc.stat[NR_WRITEBACK] * PAGE_SIZE);
5584
5585 /*
5586 * TODO: We should eventually replace our own MEMCG_RSS_HUGE counter
5587 * with the NR_ANON_THP vm counter, but right now it's a pain in the
5588 * arse because it requires migrating the work out of rmap to a place
5589 * where the page->mem_cgroup is set up and stable.
5590 */
5591 seq_printf(m, "anon_thp %llu\n",
5592 (u64)acc.stat[MEMCG_RSS_HUGE] * PAGE_SIZE);
5593
5594 for (i = 0; i < NR_LRU_LISTS; i++)
5595 seq_printf(m, "%s %llu\n", mem_cgroup_lru_names[i],
5596 (u64)acc.lru_pages[i] * PAGE_SIZE);
5597
5598 seq_printf(m, "slab_reclaimable %llu\n",
5599 (u64)acc.stat[NR_SLAB_RECLAIMABLE] * PAGE_SIZE);
5600 seq_printf(m, "slab_unreclaimable %llu\n",
5601 (u64)acc.stat[NR_SLAB_UNRECLAIMABLE] * PAGE_SIZE);
5602
5603 /* Accumulated memory events */
5604
5605 seq_printf(m, "pgfault %lu\n", acc.events[PGFAULT]);
5606 seq_printf(m, "pgmajfault %lu\n", acc.events[PGMAJFAULT]);
5607
5608 seq_printf(m, "workingset_refault %lu\n",
5609 acc.stat[WORKINGSET_REFAULT]);
5610 seq_printf(m, "workingset_activate %lu\n",
5611 acc.stat[WORKINGSET_ACTIVATE]);
5612 seq_printf(m, "workingset_nodereclaim %lu\n",
5613 acc.stat[WORKINGSET_NODERECLAIM]);
5614
5615 seq_printf(m, "pgrefill %lu\n", acc.events[PGREFILL]);
5616 seq_printf(m, "pgscan %lu\n", acc.events[PGSCAN_KSWAPD] +
5617 acc.events[PGSCAN_DIRECT]);
5618 seq_printf(m, "pgsteal %lu\n", acc.events[PGSTEAL_KSWAPD] +
5619 acc.events[PGSTEAL_DIRECT]);
5620 seq_printf(m, "pgactivate %lu\n", acc.events[PGACTIVATE]);
5621 seq_printf(m, "pgdeactivate %lu\n", acc.events[PGDEACTIVATE]);
5622 seq_printf(m, "pglazyfree %lu\n", acc.events[PGLAZYFREE]);
5623 seq_printf(m, "pglazyfreed %lu\n", acc.events[PGLAZYFREED]);
5624
> 5625 seq_printf(m, "thp_fault_alloc %lu\n", acc.events[THP_FAULT_ALLOC]);
5626 seq_printf(m, "thp_collapse_alloc %lu\n",
> 5627 acc.events[THP_COLLAPSE_ALLOC]);
5628
5629 return 0;
5630 }
5631
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 50869 bytes --]
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] mm: memcontrol: Expose THP events on a per-memcg basis
2019-02-01 2:57 ` kbuild test robot
@ 2019-02-01 2:58 ` Chris Down
0 siblings, 0 replies; 5+ messages in thread
From: Chris Down @ 2019-02-01 2:58 UTC (permalink / raw)
To: kbuild test robot
Cc: kbuild-all, Andrew Morton, Johannes Weiner, Tejun Heo,
Roman Gushchin, linux-kernel, cgroups, linux-mm, kernel-team
kbuild test robot writes:
>Thank you for the patch! Yet something to improve:
>
>[auto build test ERROR on linus/master]
>[also build test ERROR on v5.0-rc4]
This was already fixed and is now in linux-next.
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2019-02-01 2:58 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2019-01-29 20:58 [PATCH] mm: memcontrol: Expose THP events on a per-memcg basis Chris Down
2019-01-29 22:15 ` Johannes Weiner
2019-02-01 1:39 ` kbuild test robot
2019-02-01 2:57 ` kbuild test robot
2019-02-01 2:58 ` Chris Down
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