Re: [PATCH v5 1/2] lib: stackdepot: Add support to configure STACK_HASH_SIZE

From: Vijayanand Jitta
Date: Thu Jan 21 2021 - 23:01:44 EST

On 1/22/2021 5:49 AM, Minchan Kim wrote:
> On Mon, Jan 18, 2021 at 03:26:41PM +0530, vjitta@xxxxxxxxxxxxxx wrote:
>> From: Yogesh Lal <ylal@xxxxxxxxxxxxxx>
>> Aim is to have configurable value for STACK_HASH_SIZE,
>> so depend on use case one can configure it.
>> One example is of Page Owner, default value of
>> STACK_HASH_SIZE lead stack depot to consume 8MB of static memory.
>> Making it configurable and use lower value helps to enable features like
>> CONFIG_PAGE_OWNER without any significant overhead.
> The description could be improved to prevent confusing.
> CONFIG_PAGE_OWNER works only if page_owner=on via kernel parameter
> on CONFIG_PAGE_OWNER configured system.
> Thus, unless admin enable it via command line option, the stackdepot
> will just waste 8M memory without any customer.

Sure, will update the commit text as suggested.

>> Signed-off-by: Yogesh Lal <ylal@xxxxxxxxxxxxxx>
>> Signed-off-by: Vinayak Menon <vinmenon@xxxxxxxxxxxxxx>
>> Signed-off-by: Vijayanand Jitta <vjitta@xxxxxxxxxxxxxx>
> Reviewed-by: Minchan Kim <minchan@xxxxxxxxxx>

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