Allen Yang <[EMAIL PROTECTED]> wrote:
> Some people said MCF5329 doesn't have MMU so that it doesn't support
> shared memory IPC. Other people said shared memory IPC can be used even
> without MMU.
>
> Anybody here can verify if MCF5329 without MMU can use shared memory
> IPC?
It can be used, bu
:[EMAIL PROTECTED] On Behalf Of David Howells
Sent: Wednesday, July 11, 2007 12:25 PM
To: uClinux development list
Subject: Re: [uClinux-dev] uClinux supports shared memory IPC?
Allen Yang <[EMAIL PROTECTED]> wrote:
> Some people said MCF5329 doesn't have MMU so that it doesn't supp
Allen Yang <[EMAIL PROTECTED]> wrote:
> I am using ColdFire MCF5329EVB and uClinux (2.6.17 kernel, uClibc
> 0.9.27).
2.6.17 certainly has support for it.
Can you check CONFIG_TINY_SHMEM=y and CONFIG_RAMFS=y?
> The compilation was OK. However, when I downloaded to my board, the
> shared memory c
Allen Yang <[EMAIL PROTECTED]> wrote:
> > What was errno?
>
> No error/warning messages.
> From the return value (-1), I know shared memory creation failed.
Yes, but without knowing the error put in errno by shmget(), it's difficult to
say why it failed.
> shmget(4096, 4096, IPC_CREAT|0x1b6|066
Of David Howells
Sent: Thursday, July 26, 2007 5:10 AM
To: uClinux development list
Subject: Re: [uClinux-dev] uClinux supports shared memory IPC?
Allen Yang <[EMAIL PROTECTED]> wrote:
> I am using ColdFire MCF5329EVB and uClinux (2.6.17 kernel, uClibc
> 0.9.27).
2.6.17 certainly has support
l returns
-1.
Regards,
Allen Yang
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Gerrit Binnenmars
Sent: Thursday, July 26, 2007 12:41 PM
To: uClinux development list
Subject: Re: [uClinux-dev] uClinux supports shared memory IPC?
H
lls"
> Aan: "uClinux development list"
> CC:
> Onderwerp : Re: [uClinux-dev] uClinux supports shared memory IPC?
>
> Allen Yang wrote:
>
> > I am using ColdFire MCF5329EVB and uClinux (2.6.17 kernel, uClibc
> > 0.9.27).
>
> 2.6.17 certainly
Gerrit Binnenmars <[EMAIL PROTECTED]> wrote:
> - mkdir /dev/shm
> - mount -t tmpfs tmpfs /dev/shm
These two steps ought to be unnecessary as init_tmpfs() in mm/tiny-shmem.c
creates the superblock by doing an internal mount.
David
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