From: 朱辉 <zhuhui@xiaomi.com>
To: Pavel Machek <pavel@denx.de>
Cc: "rjw@rjwysocki.net" <rjw@rjwysocki.net>,
"len.brown@intel.com" <len.brown@intel.com>,
"m.szyprowski@samsung.com" <m.szyprowski@samsung.com>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"mina86@mina86.com" <mina86@mina86.com>,
"aneesh.kumar@linux.vnet.ibm.com"
<aneesh.kumar@linux.vnet.ibm.com>,
"iamjoonsoo.kim@lge.com" <iamjoonsoo.kim@lge.com>,
"hannes@cmpxchg.org" <hannes@cmpxchg.org>,
"riel@redhat.com" <riel@redhat.com>,
"mgorman@suse.de" <mgorman@suse.de>,
"minchan@kernel.org" <minchan@kernel.org>,
"nasa4836@gmail.com" <nasa4836@gmail.com>,
"ddstreet@ieee.org" <ddstreet@ieee.org>,
"hughd@google.com" <hughd@google.com>,
"mingo@kernel.org" <mingo@kernel.org>,
"rientjes@google.com" <rientjes@google.com>,
"peterz@infradead.org" <peterz@infradead.org>,
"keescook@chromium.org" <keescook@chromium.org>,
"atomlin@redhat.com" <atomlin@redhat.com>,
raistlin@linux.it
Subject: Re: [PATCH 1/4] (CMA_AGGRESSIVE) Add CMA_AGGRESSIVE to Kconfig
Date: Wed, 22 Oct 2014 05:44:24 +0000 [thread overview]
Message-ID: <2c27ad87839b42ca85c03c9541550d30@cnbox4.mioffice.cn> (raw)
In-Reply-To: 201410220126.s9M1Qita026502@spam.xiaomi.com
On 10/22/14 09:27, Pavel Machek wrote:
> Hi!
>
>> Add CMA_AGGRESSIVE config that depend on CMA to Linux kernel config.
>> Add CMA_AGGRESSIVE_PHY_MAX, CMA_AGGRESSIVE_FREE_MIN and CMA_AGGRESSIVE_SHRINK
>> that depend on CMA_AGGRESSIVE.
>>
>> If physical memory size (not include CMA memory) in byte less than or equal to
>> CMA_AGGRESSIVE_PHY_MAX, CMA aggressive switch (sysctl vm.cma-aggressive-switch)
>> will be opened.
>
> Ok...
>
> Do I understand it correctly that there is some problem with
> hibernation not working on machines not working on machines with big
> CMA areas...?
No, these patches want to handle this issue that most of CMA memory is
not allocated before lowmemorykiller or oom_killer begin to kill tasks.
>
> But adding 4 config options end-user has no chance to set right can
> not be the best solution, can it?
>
>> +config CMA_AGGRESSIVE_PHY_MAX
>> + hex "Physical memory size in Bytes that auto turn on the CMA aggressive switch"
>> + depends on CMA_AGGRESSIVE
>> + default 0x40000000
>> + help
>> + If physical memory size (not include CMA memory) in byte less than or
>> + equal to this value, CMA aggressive switch will be opened.
>> + After the Linux boot, sysctl "vm.cma-aggressive-switch" can control
>> + the CMA AGGRESSIVE switch.
>
> For example... how am I expected to figure right value to place here?
I agree with that. I will update this config to auto set in next version.
Thanks,
Hui
>
> Pavel
>
next prev parent reply other threads:[~2014-10-22 5:44 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-16 3:35 [PATCH 0/4] (CMA_AGGRESSIVE) Make CMA memory be more aggressive about allocation Hui Zhu
2014-10-16 3:35 ` [PATCH 1/4] (CMA_AGGRESSIVE) Add CMA_AGGRESSIVE to Kconfig Hui Zhu
2014-10-18 22:15 ` Pavel Machek
[not found] ` <201410220126.s9M1Qita026502@spam.xiaomi.com>
2014-10-22 5:44 ` 朱辉 [this message]
2014-10-16 3:35 ` [PATCH 2/4] (CMA_AGGRESSIVE) Add argument hibernation to function shrink_all_memory Hui Zhu
2014-10-16 8:45 ` Rafael J. Wysocki
2014-10-17 6:18 ` 朱辉
2014-10-17 9:28 ` [PATCH v2 2/4] (CMA_AGGRESSIVE) Add new function shrink_all_memory_for_cma Hui Zhu
2014-10-18 4:50 ` PINTU KUMAR
2014-10-16 3:35 ` [PATCH 3/4] (CMA_AGGRESSIVE) Update reserve custom contiguous area code Hui Zhu
2014-10-17 9:30 ` [PATCH v2 " Hui Zhu
2014-10-16 3:35 ` [PATCH 4/4] (CMA_AGGRESSIVE) Update page alloc function Hui Zhu
2014-10-24 5:28 ` Joonsoo Kim
2014-11-28 3:45 ` Hui Zhu
2014-10-16 5:13 ` [PATCH 0/4] (CMA_AGGRESSIVE) Make CMA memory be more aggressive about allocation Weijie Yang
2014-10-16 8:55 ` Laura Abbott
2014-10-17 7:44 ` 朱辉
2014-10-22 12:01 ` Peter Hurley
2014-10-23 0:40 ` 朱辉
2014-10-29 14:43 ` Vlastimil Babka
2014-11-03 8:46 ` Hui Zhu
2014-11-04 7:53 ` Minchan Kim
2014-11-04 8:59 ` Hui Zhu
2014-11-04 9:29 ` Vlastimil Babka
2014-11-07 7:06 ` Minchan Kim
2014-10-24 5:25 ` Joonsoo Kim
2014-11-03 7:28 ` Hui Zhu
2014-11-03 8:05 ` Joonsoo Kim
2014-11-04 2:31 ` Joonsoo Kim
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