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Message-Id: <20180618091808.4419-1-vbabka@suse.cz>
Date: Mon, 18 Jun 2018 11:18:01 +0200
From: Vlastimil Babka <vbabka@...e.cz>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org,
Roman Gushchin <guro@...com>, Michal Hocko <mhocko@...nel.org>,
Johannes Weiner <hannes@...xchg.org>,
linux-api@...r.kernel.org, Christoph Lameter <cl@...ux.com>,
David Rientjes <rientjes@...gle.com>,
Mel Gorman <mgorman@...hsingularity.net>,
Matthew Wilcox <willy@...radead.org>,
Vlastimil Babka <vbabka@...e.cz>,
Laura Abbott <labbott@...hat.com>,
Sumit Semwal <sumit.semwal@...aro.org>,
Vijayanand Jitta <vjitta@...eaurora.org>
Subject: [PATCH v2 0/7] kmalloc-reclaimable caches
v2 changes:
- shorten cache names to kmalloc-rcl-<SIZE>
- last patch shortens <SIZE> for all kmalloc caches to e.g. "1k", "4M"
- include dma caches to the 2D kmalloc_caches[] array to avoid a branch
- vmstat counter nr_indirectly_reclaimable_bytes renamed to
nr_kernel_misc_reclaimable, doesn't include kmalloc-rcl-*
- /proc/meminfo counter renamed to KReclaimable, includes kmalloc-rcl*
and nr_kernel_misc_reclaimable
Hi,
as discussed at LSF/MM [1] here's a patchset that introduces
kmalloc-reclaimable caches (more details in the second patch) and uses them for
SLAB freelists and dcache external names. The latter allows us to repurpose the
NR_INDIRECTLY_RECLAIMABLE_BYTES counter later in the series.
This is how /proc/slabinfo looks like after booting in virtme:
...
kmalloc-rcl-4M 0 0 4194304 1 1024 : tunables 1 1 0 : slabdata 0 0 0
...
kmalloc-rcl-96 7 32 128 32 1 : tunables 120 60 8 : slabdata 1 1 0
kmalloc-rcl-64 25 128 64 64 1 : tunables 120 60 8 : slabdata 2 2 0
kmalloc-rcl-32 0 0 32 124 1 : tunables 120 60 8 : slabdata 0 0 0
kmalloc-4M 0 0 4194304 1 1024 : tunables 1 1 0 : slabdata 0 0 0
kmalloc-2M 0 0 2097152 1 512 : tunables 1 1 0 : slabdata 0 0 0
kmalloc-1M 0 0 1048576 1 256 : tunables 1 1 0 : slabdata 0 0 0
...
/proc/vmstat with renamed nr_indirectly_reclaimable_bytes counter:
...
nr_slab_reclaimable 2817
nr_slab_unreclaimable 1781
...
nr_kernel_misc_reclaimable 0
...
/proc/meminfo with new KReclaimable counter:
...
Shmem: 564 kB
KReclaimable: 11260 kB
Slab: 18368 kB
SReclaimable: 11260 kB
SUnreclaim: 7108 kB
KernelStack: 1248 kB
...
Thanks,
Vlastimil
Vlastimil Babka (7):
mm, slab: combine kmalloc_caches and kmalloc_dma_caches
mm, slab/slub: introduce kmalloc-reclaimable caches
mm, slab: allocate off-slab freelists as reclaimable when appropriate
dcache: allocate external names from reclaimable kmalloc caches
mm: rename and change semantics of nr_indirectly_reclaimable_bytes
mm, proc: add KReclaimable to /proc/meminfo
mm, slab: shorten kmalloc cache names for large sizes
Documentation/filesystems/proc.txt | 4 +
drivers/base/node.c | 19 ++--
drivers/staging/android/ion/ion_page_pool.c | 4 +-
fs/dcache.c | 38 ++------
fs/proc/meminfo.c | 16 +--
include/linux/mmzone.h | 2 +-
include/linux/slab.h | 49 +++++++---
mm/page_alloc.c | 19 ++--
mm/slab.c | 11 ++-
mm/slab_common.c | 102 ++++++++++++--------
mm/slub.c | 13 +--
mm/util.c | 3 +-
mm/vmstat.c | 6 +-
13 files changed, 159 insertions(+), 127 deletions(-)
--
2.17.1
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