Hi,
I am using uclinux 2.4.x on coldfire 5272 platform, and seems the share
memory IPC is not working,
shmget() will always return -1. then I found the tmpfs is not available even
with the setting CONFIG_TMPFS=y.
then I looked at the main makefile for uclinux 2.4.x, it builds the mmnommu
directory instead of mm direcotry
where shmem.c is sitting in.
my questions are:
1. does uclinux 2.4.x support tmpfs at all? seems the answer is no, based
on this article by David McCullough:
http://www.linuxjournal.com/article/7221
2. is there any patch to support share memory IPC under uclinux 2.4.x?
seems there is mm/tiny-shmem.c in
uclinux 2.6.x to redirect share memory IPC calls to tmpfs to ramfs,
see this article:
http://mailman.uclinux.org/pipermail/uclinux-dev/2004-December/030118.html
Thanks for any information,
Bin
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