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From: Pengfei Li <lpf.vector@gmail.com>
To: akpm@linux-foundation.org
Cc: vbabka@suse.cz, cl@linux.com, penberg@kernel.org,
	rientjes@google.com, iamjoonsoo.kim@lge.com, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org, Pengfei Li <lpf.vector@gmail.com>
Subject: [PATCH v2 0/4] mm, slab: Make kmalloc_info[] contain all types of names
Date: Tue, 10 Sep 2019 01:07:11 +0800	[thread overview]
Message-ID: <20190909170715.32545-1-lpf.vector@gmail.com> (raw)


Changes in v2
--
1. remove __initconst (patch 1/5)
2. squash patch 2/5
3. add ack tag from Vlastimil Babka


There are three types of kmalloc, KMALLOC_NORMAL, KMALLOC_RECLAIM
and KMALLOC_DMA.

The name of KMALLOC_NORMAL is contained in kmalloc_info[].name,
but the names of KMALLOC_RECLAIM and KMALLOC_DMA are dynamically
generated by kmalloc_cache_name().

Patch1 predefines the names of all types of kmalloc to save
the time spent dynamically generating names.

The other 4 patches did some cleanup work.

These changes make sense, and the time spent by new_kmalloc_cache()
has been reduced by approximately 36.3%.

                         Time spent by
                         new_kmalloc_cache()
5.3-rc7                       66264
5.3-rc7+patch                 42188

Pengfei Li (4):
  mm, slab: Make kmalloc_info[] contain all types of names
  mm, slab: Remove unused kmalloc_size()
  mm, slab_common: Make 'type' is enum kmalloc_cache_type
  mm, slab_common: Make initializing KMALLOC_DMA start from 1

 include/linux/slab.h |  20 ---------
 mm/slab.c            |   7 +--
 mm/slab.h            |   2 +-
 mm/slab_common.c     | 103 +++++++++++++++++++++++--------------------
 4 files changed, 60 insertions(+), 72 deletions(-)

-- 
2.21.0



             reply	other threads:[~2019-09-09 17:07 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-09 17:07 Pengfei Li [this message]
2019-09-09 17:07 ` [PATCH v2 1/4] mm, slab: Make kmalloc_info[] contain all types of names Pengfei Li
2019-09-09 17:07 ` [PATCH v2 2/4] mm, slab: Remove unused kmalloc_size() Pengfei Li
2019-09-09 17:07 ` [PATCH v2 3/4] mm, slab_common: Make 'type' is enum kmalloc_cache_type Pengfei Li
2019-09-09 20:00   ` Roman Gushchin
2019-09-10  0:59     ` Pengfei Li
2019-09-09 17:07 ` [PATCH v2 4/4] mm, slab_common: Make initializing KMALLOC_DMA start from 1 Pengfei Li

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