From: Stefan Strogin <s.strogin@partner.samsung.com>
To: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Michal Nazarewicz <mina86@mina86.com>,
aneesh.kumar@linux.vnet.ibm.com,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Dmitry Safonov <d.safonov@partner.samsung.com>,
Pintu Kumar <pintu.k@samsung.com>,
Weijie Yang <weijie.yang@samsung.com>,
Laura Abbott <lauraa@codeaurora.org>,
SeongJae Park <sj38.park@gmail.com>, Hui Zhu <zhuhui@xiaomi.com>,
Minchan Kim <minchan@kernel.org>,
Dyasly Sergey <s.dyasly@samsung.com>,
Vyacheslav Tyrtov <v.tyrtov@samsung.com>,
gregory.0xf0@gmail.com, sasha.levin@oracle.com, gioh.kim@lge.com,
pavel@ucw.cz, stefan.strogin@gmail.com
Subject: Re: [PATCH 1/4] mm: cma: add currently allocated CMA buffers list to debugfs
Date: Mon, 16 Feb 2015 22:15:03 +0300 [thread overview]
Message-ID: <54E241B7.1070709@partner.samsung.com> (raw)
In-Reply-To: <20150213031012.GH6592@js1304-P5Q-DELUXE>
Hello,
On 13/02/15 06:10, Joonsoo Kim wrote:
> On Fri, Feb 13, 2015 at 01:15:41AM +0300, Stefan Strogin wrote:
>
> This linear searching make cma_release() slow if we have many allocated
> cma buffers. It wouldn't cause any problem?
>
> Thanks.
>
>
On my board the usual number of CMA buffers is about 20, and releasing a
buffer isn't a very frequent operation.
But if there could be systems with much more CMA buffers and/or frequent
allocating/releasing them, maybe it would be useful to convert buffers
list to rb_trees?
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WARNING: multiple messages have this Message-ID (diff)
From: Stefan Strogin <s.strogin@partner.samsung.com>
To: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Michal Nazarewicz <mina86@mina86.com>,
aneesh.kumar@linux.vnet.ibm.com,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Dmitry Safonov <d.safonov@partner.samsung.com>,
Pintu Kumar <pintu.k@samsung.com>,
Weijie Yang <weijie.yang@samsung.com>,
Laura Abbott <lauraa@codeaurora.org>,
SeongJae Park <sj38.park@gmail.com>, Hui Zhu <zhuhui@xiaomi.com>,
Minchan Kim <minchan@kernel.org>,
Dyasly Sergey <s.dyasly@samsung.com>,
Vyacheslav Tyrtov <v.tyrtov@samsung.com>,
gregory.0xf0@gmail.com, sasha.levin@oracle.com, gioh.kim@lge.com,
pavel@ucw.cz, stefan.strogin@gmail.com
Subject: Re: [PATCH 1/4] mm: cma: add currently allocated CMA buffers list to debugfs
Date: Mon, 16 Feb 2015 22:15:03 +0300 [thread overview]
Message-ID: <54E241B7.1070709@partner.samsung.com> (raw)
In-Reply-To: <20150213031012.GH6592@js1304-P5Q-DELUXE>
Hello,
On 13/02/15 06:10, Joonsoo Kim wrote:
> On Fri, Feb 13, 2015 at 01:15:41AM +0300, Stefan Strogin wrote:
>
> This linear searching make cma_release() slow if we have many allocated
> cma buffers. It wouldn't cause any problem?
>
> Thanks.
>
>
On my board the usual number of CMA buffers is about 20, and releasing a
buffer isn't a very frequent operation.
But if there could be systems with much more CMA buffers and/or frequent
allocating/releasing them, maybe it would be useful to convert buffers
list to rb_trees?
next prev parent reply other threads:[~2015-02-16 19:15 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-12 22:15 [PATCH 0/4] mm: cma: add some debug information for CMA Stefan Strogin
2015-02-12 22:15 ` Stefan Strogin
2015-02-12 22:15 ` [PATCH 1/4] mm: cma: add currently allocated CMA buffers list to debugfs Stefan Strogin
2015-02-12 22:15 ` Stefan Strogin
2015-02-13 3:10 ` Joonsoo Kim
2015-02-13 3:10 ` Joonsoo Kim
2015-02-16 19:15 ` Stefan Strogin [this message]
2015-02-16 19:15 ` Stefan Strogin
2015-02-16 19:19 ` Stefan Strogin
2015-02-16 19:19 ` Stefan Strogin
2015-02-13 3:16 ` Joonsoo Kim
2015-02-13 3:16 ` Joonsoo Kim
2015-02-18 10:06 ` Stefan Strogin
2015-02-18 10:06 ` Stefan Strogin
2015-02-13 14:18 ` SeongJae Park
2015-02-13 14:18 ` SeongJae Park
2015-02-16 19:25 ` Stefan Strogin
2015-02-16 19:25 ` Stefan Strogin
2015-02-12 22:15 ` [PATCH 2/4] mm: cma: add functions to get region pages counters Stefan Strogin
2015-02-12 22:15 ` Stefan Strogin
2015-02-13 3:11 ` Joonsoo Kim
2015-02-13 3:11 ` Joonsoo Kim
2015-02-14 7:32 ` Gioh Kim
2015-02-14 7:32 ` Gioh Kim
2015-02-18 13:12 ` Safonov Dmitry
2015-02-18 13:12 ` Safonov Dmitry
2015-02-12 22:15 ` [PATCH 3/4] mm: cma: add number of pages to debug message in cma_release() Stefan Strogin
2015-02-12 22:15 ` Stefan Strogin
2015-02-12 22:15 ` [PATCH 4/4] mm: cma: add trace events to debug physically-contiguous memory allocations Stefan Strogin
2015-02-12 22:15 ` Stefan Strogin
2015-02-13 3:03 ` [PATCH 0/4] mm: cma: add some debug information for CMA Joonsoo Kim
2015-02-13 3:03 ` Joonsoo Kim
2015-02-14 7:40 ` Gioh Kim
2015-02-14 7:40 ` Gioh Kim
2015-02-16 19:29 ` Stefan Strogin
2015-02-16 19:29 ` Stefan Strogin
2015-02-22 23:29 ` Gioh Kim
2015-02-22 23:29 ` Gioh Kim
2015-02-16 18:53 ` Stefan Strogin
2015-02-16 18:53 ` Stefan Strogin
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