* kmalloc size limit?
@ 2016-08-19 18:21 Muni Sekhar
2016-08-20 9:47 ` Greg KH
2016-08-21 9:53 ` arshad hussain
0 siblings, 2 replies; 6+ messages in thread
From: Muni Sekhar @ 2016-08-19 18:21 UTC (permalink / raw)
To: kernelnewbies
Hi All,
I would like to know what is the maximum size limit for kmalloc() API
to return a valid memory?
Does the size limit varies based on the flags argument?
--
Thanks,
Sekhar
^ permalink raw reply [flat|nested] 6+ messages in thread
* kmalloc size limit?
2016-08-19 18:21 kmalloc size limit? Muni Sekhar
@ 2016-08-20 9:47 ` Greg KH
2016-08-21 9:53 ` arshad hussain
1 sibling, 0 replies; 6+ messages in thread
From: Greg KH @ 2016-08-20 9:47 UTC (permalink / raw)
To: kernelnewbies
On Fri, Aug 19, 2016 at 11:51:18PM +0530, Muni Sekhar wrote:
> Hi All,
>
> I would like to know what is the maximum size limit for kmalloc() API
> to return a valid memory?
Depends on the system :)
Why, what are you trying to use large amounts of memory for?
> Does the size limit varies based on the flags argument?
Yes it can.
sorry for being vague, but the questions were really vague...
greg k-h
^ permalink raw reply [flat|nested] 6+ messages in thread
* kmalloc size limit?
2016-08-19 18:21 kmalloc size limit? Muni Sekhar
2016-08-20 9:47 ` Greg KH
@ 2016-08-21 9:53 ` arshad hussain
1 sibling, 0 replies; 6+ messages in thread
From: arshad hussain @ 2016-08-21 9:53 UTC (permalink / raw)
To: kernelnewbies
> On 19-Aug-2016, at 11:51 pm, Muni Sekhar <munisekharrms@gmail.com> wrote:
>
> Hi All,
>
> I would like to know what is the maximum size limit for kmalloc() API
> to return a valid memory?
AFAIK, on x86 the largest allocation is 1024 pages. It boils down to 4MB.
> Does the size limit varies based on the flags argument?
>
>
> --
> Thanks,
> Sekhar
>
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
^ permalink raw reply [flat|nested] 6+ messages in thread
* kmalloc size limit?
@ 2016-08-19 18:39 Muni Sekhar
2016-08-22 12:12 ` Michal Hocko
0 siblings, 1 reply; 6+ messages in thread
From: Muni Sekhar @ 2016-08-19 18:39 UTC (permalink / raw)
To: linux-kernel
Hi All,
I would like to know what is the maximum size limit for kmalloc() API
to return a valid memory?
Does the size limit varies based on the flags argument?
--
Thanks,
Sekhar
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: kmalloc size limit?
2016-08-19 18:39 Muni Sekhar
@ 2016-08-22 12:12 ` Michal Hocko
2016-08-22 13:04 ` Muni Sekhar
0 siblings, 1 reply; 6+ messages in thread
From: Michal Hocko @ 2016-08-22 12:12 UTC (permalink / raw)
To: Muni Sekhar; +Cc: linux-kernel
On Sat 20-08-16 00:09:53, Muni Sekhar wrote:
> Hi All,
>
> I would like to know what is the maximum size limit for kmalloc() API
> to return a valid memory?
KMALLOC_MAX_CACHE_SIZE
> Does the size limit varies based on the flags argument?
no but different flags can greatly influence how succesful such an
allocation can be.
--
Michal Hocko
SUSE Labs
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: kmalloc size limit?
2016-08-22 12:12 ` Michal Hocko
@ 2016-08-22 13:04 ` Muni Sekhar
0 siblings, 0 replies; 6+ messages in thread
From: Muni Sekhar @ 2016-08-22 13:04 UTC (permalink / raw)
To: Michal Hocko; +Cc: linux-kernel
On Mon, Aug 22, 2016 at 5:42 PM, Michal Hocko <mhocko@kernel.org> wrote:
> On Sat 20-08-16 00:09:53, Muni Sekhar wrote:
>> Hi All,
>>
>> I would like to know what is the maximum size limit for kmalloc() API
>> to return a valid memory?
>
> KMALLOC_MAX_CACHE_SIZE
Thanks Michal.
>
>> Does the size limit varies based on the flags argument?
>
> no but different flags can greatly influence how succesful such an
> allocation can be.
> --
> Michal Hocko
> SUSE Labs
--
Thanks,
Sekhar
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2016-08-22 13:04 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2016-08-19 18:21 kmalloc size limit? Muni Sekhar
2016-08-20 9:47 ` Greg KH
2016-08-21 9:53 ` arshad hussain
-- strict thread matches above, loose matches on Subject: below --
2016-08-19 18:39 Muni Sekhar
2016-08-22 12:12 ` Michal Hocko
2016-08-22 13:04 ` Muni Sekhar
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.