On Mon, Aug 26, 2019 at 12:55 PM Michal Hocko wrote:
>
> On Fri 23-08-19 00:17:22, Pankaj Suryawanshi wrote:
> > On Thu, Aug 22, 2019 at 6:32 PM Michal Hocko wrote:
> > >
> > > On Wed 21-08-19 22:58:03, Pankaj Suryawanshi wrote:
> > > > Hello,
&
On Thu, Aug 22, 2019 at 6:22 PM Michal Hocko wrote:
>
> On Wed 21-08-19 22:23:44, Pankaj Suryawanshi wrote:
> > Hello,
> >
> > 1. What are Pageblocks and migrate types(MIGRATE_CMA) in Linux memory ?
>
> Pageblocks are a simple grouping of physically contiguous pages
On Tue, Aug 6, 2019 at 8:37 PM Michal Hocko wrote:
>
> On Tue 06-08-19 20:24:03, Pankaj Suryawanshi wrote:
> > On Tue, 6 Aug, 2019, 1:46 AM Michal Hocko, wrote:
> > >
> > > On Mon 05-08-19 21:04:53, Pankaj Suryawanshi wrote:
> > > > On Mon,
On Tue, 6 Aug, 2019, 1:46 AM Michal Hocko, wrote:
>
> On Mon 05-08-19 21:04:53, Pankaj Suryawanshi wrote:
> > On Mon, Aug 5, 2019 at 5:35 PM Michal Hocko wrote:
> > >
> > > On Mon 05-08-19 13:56:20, Vlastimil Babka wrote:
> > > > On 8/5/19 1:24 PM, Mi
On Mon, Aug 5, 2019 at 5:35 PM Michal Hocko wrote:
>
> On Mon 05-08-19 13:56:20, Vlastimil Babka wrote:
> > On 8/5/19 1:24 PM, Michal Hocko wrote:
> > >> [ 727.954355] CPU: 0 PID: 56 Comm: kworker/u8:2 Tainted: P O
> > >> 4.14.65 #606
> > > [...]
> > >> [ 728.029390] [] (oom_kill_pro
On Mon, May 6, 2019 at 2:35 PM Vlastimil Babka wrote:
>
> On 5/3/19 7:44 PM, Pankaj Suryawanshi wrote:
> >> First possibility that comes to mind is that a usermodehelper got
> >> launched, and
> >> it then tried to fork with a very large active process image.
On Thu, May 2, 2019 at 10:51 AM Valdis Klētnieks
wrote:
>
> On Thu, 02 May 2019 04:56:05 +0530, Pankaj Suryawanshi said:
>
> > Please help me to decode the error messages and reason for this errors.
>
> > [ 3205.818891] HwBinder:1894_6: page allocation failure: orde
On Wed, Apr 17, 2019 at 5:12 PM Vlastimil Babka wrote:
>
> On 4/6/19 7:59 AM, Pankaj Suryawanshi wrote:
> > Hello ,
> >
> > shrink_page_list() returns , number of pages reclaimed, when pages is
> > unevictable it returns VM_BUG_ON_PAGE(PageLRU(page) ||
> > Pag
From: Christopher Lameter
Sent: 09 April 2019 21:31
To: Pankaj Suryawanshi
Cc: linux-kernel@vger.kernel.org; linux...@kvack.org
Subject: [External] Re: Basics : Memory Configuration
On Tue, 9 Apr 2019, Pankaj Suryawanshi wrote:
> I am confuse ab
From: Christopher Lameter
Sent: 09 April 2019 21:31
To: Pankaj Suryawanshi
Cc: linux-kernel@vger.kernel.org; linux...@kvack.org
Subject: [External] Re: Basics : Memory Configuration
On Tue, 9 Apr 2019, Pankaj Suryawanshi wrote:
> I am confuse ab
Hello,
I am confuse about memory configuration and I have below questions
1. if 32-bit os maximum virtual address is 4GB, When i have 4 gb of ram for
32-bit os, What about the virtual memory size ? is it required virtual
memory(disk space) or we can directly use physical memory ?
2. In 32-bit
From: Shyam Saini
Sent: 04 April 2019 19:58
To: Pankaj Suryawanshi
Cc: linux-kernel@vger.kernel.org; linux...@kvack.org
Subject: [External] Re: CMA area pages information
CAUTION: This email originated from outside of the organization. Do not click
From: Pankaj Suryawanshi
Sent: 01 April 2019 16:34
To: linux-kernel@vger.kernel.org; linux...@kvack.org
Subject: Re: CMA area pages information
From: Pankaj Suryawanshi
Sent: 01 April 2019 13:26
To: linux-kernel
From: Pankaj Suryawanshi
Sent: 03 April 2019 19:50
To: linux...@kvack.org; linux-kernel@vger.kernel.org
Subject: How to calculate instruction executed for function
Hello,
How to calculate instruction executed for function ?
For eg.
I need to calculate
Hello,
How to calculate instruction executed for function ?
For eg.
I need to calculate instruction executed for CMA_ALLOC function.
How many instruction executed for cma_alloc ?
Any help would be appreciated.
Regards,
Pankaj
From: Pankaj Suryawanshi
Sent: 01 April 2019 13:26
To: linux-kernel@vger.kernel.org; linux...@kvack.org
Subject: CMA area pages information
Hello,
Is there any way to get CMA area pages information (tool/application) ?
Trying to get CMA-pages info
Hello,
Is there any way to get CMA area pages information (tool/application) ?
Regards,
Pankaj
*
eInfochips Business Disclaimer: This e-mail
From: Pankaj Suryawanshi
Sent: 29 March 2019 10:52
To: Matthew Wilcox
Cc: linux-kernel@vger.kernel.org; linux...@kvack.org
Subject: Re: [External] Re: Print map for total physical and virtual memory
From: Matthew
From: Pankaj Suryawanshi
Sent: 28 March 2019 13:17
To: linux-kernel@vger.kernel.org; linux...@kvack.org
Subject: Re: Page-allocation-failure
From: Pankaj Suryawanshi
Sent: 28 March 2019 13:12
To: linux-kernel
From: Michal Hocko
Sent: 26 March 2019 15:06
To: Pankaj Suryawanshi
Cc: Kirill Tkhai; Vlastimil Babka; aneesh.ku...@linux.ibm.com;
linux-kernel@vger.kernel.org; minc...@kernel.org; linux...@kvack.org;
khand...@linux.vnet.ibm.com
Subject: Re: [External
From: Matthew Wilcox
Sent: 26 March 2019 18:13
To: Pankaj Suryawanshi
Cc: linux-kernel@vger.kernel.org; linux...@kvack.org
Subject: Re: [External] Re: Print map for total physical and virtual memory
On Tue, Mar 26, 2019 at 12:35:25PM +, Pankaj
From: Pankaj Suryawanshi
Sent: 28 March 2019 13:12
To: linux-kernel@vger.kernel.org; linux...@kvack.org
Subject: Page-allocation-failure
Hello ,
I am facing issue related to page allocation failure.
If anyone is familiar with this issue, let me know
Hello ,
I am facing issue related to page allocation failure.
If anyone is familiar with this issue, let me know what is the issue?
How to solved/debug it.
Failure logs -:
---
From: Matthew Wilcox
Sent: 26 March 2019 17:06
To: Pankaj Suryawanshi
Cc: linux-kernel@vger.kernel.org; linux...@kvack.org
Subject: [External] Re: Print map for total physical and virtual memory
CAUTION: This email originated from outside of the
From: Michal Hocko
Sent: 26 March 2019 14:31
To: Pankaj Suryawanshi
Cc: Kirill Tkhai; Vlastimil Babka; aneesh.ku...@linux.ibm.com;
linux-kernel@vger.kernel.org; minc...@kernel.org; linux...@kvack.org;
khand...@linux.vnet.ibm.com
Subject: Re: [External
From: Michal Hocko
Sent: 26 March 2019 14:31
To: Pankaj Suryawanshi
Cc: Kirill Tkhai; Vlastimil Babka; aneesh.ku...@linux.ibm.com;
linux-kernel@vger.kernel.org; minc...@kernel.org; linux...@kvack.org;
khand...@linux.vnet.ibm.com
Subject: Re: [External
Hello,
1. Is there any way to print whole physical and virtual memory map in
kernel/user space ?
2. Is there any way to print map of cma area reserved memory and movable pages
of cma area.
3. Is there any way to know who pinned the pages from cma reserved area ?
Regards,
Pankaj
*
From: Pankaj Suryawanshi
Sent: 20 March 2019 12:18
To: Kirill Tkhai; Vlastimil Babka; Michal Hocko; aneesh.ku...@linux.ibm.com
Cc: linux-kernel@vger.kernel.org; minc...@kernel.org; linux...@kvack.org;
khand...@linux.vnet.ibm.com
Subject: Re: [External
From: Kirill Tkhai
Sent: 18 March 2019 16:08
To: Pankaj Suryawanshi; Vlastimil Babka; Michal Hocko;
aneesh.ku...@linux.ibm.com
Cc: linux-kernel@vger.kernel.org; minc...@kernel.org; linux...@kvack.org;
khand...@linux.vnet.ibm.com
Subject: Re: [External
From: Pankaj Suryawanshi
Sent: 19 March 2019 15:59
To: Michal Hocko
Cc: linux...@kvack.org; linux-kernel@vger.kernel.org; minc...@kernel.org;
Kirill Tkhai
Subject: Re: [External] Re: mm/cma.c: High latency for cma allocation
From: Michal Hocko
Sent: 18 March 2019 19:59
To: Pankaj Suryawanshi
Cc: linux...@kvack.org; linux-kernel@vger.kernel.org; minc...@kernel.org;
Kirill Tkhai
Subject: Re: [External] Re: mm/cma.c: High latency for cma allocation
On Mon 18-03-19 14:02:09
From: Michal Hocko
Sent: 18 March 2019 19:12
To: Pankaj Suryawanshi
Cc: linux...@kvack.org; linux-kernel@vger.kernel.org; minc...@kernel.org;
Kirill Tkhai
Subject: Re: [External] Re: mm/cma.c: High latency for cma allocation
[Please do not use html
From: Michal Hocko
Sent: 18 March 2019 18:37:57
To: Pankaj Suryawanshi
Cc: linux...@kvack.org; linux-kernel@vger.kernel.org; minc...@kernel.org;
Kirill Tkhai
Subject: [External] Re: mm/cma.c: High latency for cma allocation
CAUTION: This email originated from outside of the
Hello,
I am facing issue of high latency in CMA allocation of large size buffer.
I am frequently allocating/deallocation CMA memory, latency of allocation is
very high.
Below are the stat for allocation/deallocation latency issue.
(390100 kB), latency 29997 us
(390100 kB), latency 22957 us
(
From: Kirill Tkhai
Sent: 18 March 2019 15:17:56
To: Pankaj Suryawanshi; Vlastimil Babka; Michal Hocko;
aneesh.ku...@linux.ibm.com
Cc: linux-kernel@vger.kernel.org; minc...@kernel.org; linux...@kvack.org;
khand...@linux.vnet.ibm.com; hillf...@alibaba-inc.com
Subject: Re: [External] Re: vmscan
.2019 12:09, Pankaj Suryawanshi wrote:
>
> Hello
>
> shrink_page_list() returns , number of pages reclaimed, when pages is
> unevictable it returns VM_BUG_ON_PAGE(PageLRU(page) ||
> PageUnevicatble(page),page);
the general idea is shrink_page_list() can't iterate PageUnevictabl
mem_cgroup_swap_full(page) ||
It fixes the below issue.
1. Large size buffer allocation using cma_alloc successful with unevictable
pages.
cma_alloc of current kernel will fail due to unevictable page
Please let me know if anything i am missing.
Regards,
Pankaj
From: Vlastimil Babka
S
cgroup_swap_full(page) ||
It fixes the below issue.
1. Large size buffer allocation using cma_alloc successful with unevictable
pages.
cma_alloc of current kernel will fail due to unevictable page
Please let me know if anything i am missing.
Regards,
Pankaj
From: Pankaj Suryawanshi
S
350!
[ 24.739478] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM
-
From: Pankaj Suryawanshi
Sent: 15 March 2019 15:41:57
To: Kirill Tkhai; Michal Hocko; aneesh
[ cc Aneesh kumar, Anshuman, Hillf, Vlastimil]
From: Pankaj Suryawanshi
Sent: 15 March 2019 11:35:05
To: Kirill Tkhai; Michal Hocko
Cc: linux-kernel@vger.kernel.org; minc...@kernel.org; linux...@kvack.org
Subject: Re: Re: [External] Re: vmscan: Reclaim unevictable pages
[ cc linux-mm
Hello,
I am facing issue of high latency in CMA allocation of large size buffer .
I am frequently allocating/deallocation CMA memory, but latency of allocation
is very high.
Below are the stat for allocation/deallocation latency issue.
(389120 kB), latency 29997 us
(389120 kB), latency 22957
[ cc linux-mm ]
From: Pankaj Suryawanshi
Sent: 14 March 2019 19:14:40
To: Kirill Tkhai; Michal Hocko
Cc: linux-kernel@vger.kernel.org; minc...@kernel.org
Subject: Re: Re: [External] Re: vmscan: Reclaim unevictable pages
Hello ,
Please ignore the curly braces, they are just for debugging
l(page) ||
Regards,
Pankaj
From: Kirill Tkhai
Sent: 14 March 2019 14:55:34
To: Pankaj Suryawanshi; Michal Hocko
Cc: linux-kernel@vger.kernel.org; minc...@kernel.org
Subject: Re: Re: [External] Re: vmscan: Reclaim unevictable pages
On 14.03.2019 11:52, Pankaj Suryawanshi wrote:
>
> I am
list_add(&page->lru, &ret_pages);
+continue;
activate_locked:
/* Not a candidate for swapping, so reclaim swap space. */
From: Kirill Tkhai
Sent: 14 March 2019 14:55:34
To: Pankaj Suryawanshi; Michal Hocko
Cc: linux-kernel@vger.kernel.org
I am using kernel version 4.14.65 (on Android pie [ARM]).
No additional patches applied on top of vanilla.(Core MM).
If I change in the vmscan.c as below patch, it will work.
Regards,
Pankaj
From: Michal Hocko
Sent: 14 March 2019 14:11:20
To: Pankaj Suryawanshi
Cc: linux-kernel
ru, &ret_pages);
+continue;
activate_locked:
/* Not a candidate for swapping, so reclaim swap space. */
From: Pankaj Suryawanshi
Sent: 14 March 2019 13:23:53
To: linux-kernel@vger.kernel.org
Cc: minc...@kernel.org
Subject: vmscan: Reclaim unevictable pages
Hello ,
Hello ,
shrink_page_list() returns , number of pages reclaimed, when pages is
unevictable it returns VM_BUG_ON_PAGE(PageLRU(page) ||
PageUnevicatble(page),page);
We can add the unevictable pages in reclaim list in shrink_page_list(), return
total number of reclaim pages including unevictable
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