On Tue, 2010-12-21 at 10:03 +0100, Kolja Waschk wrote:
> Hi,
>
> I'm in the process of upgrading my Blackfin uclinux dist base from 2009R1.1
> to 2010R1. This also includes a kernel and Xenomai upgrade.
>
> The kernel is now 2.6.34 with I-pipe 1.14.02. With Xenomai 2.5.3, my
> application told me "Xenomai: User-space support anterior to 2.5.2 detected"
> on startup. I looked into newer Xenomai and found that there might have been
> related code changes, so I tried 2.5.5.2 (and also upgraded to I-pipe
> 1.15-01, but that doesn't seem to make a difference).
>
> Now with 2.5.5.2, the warning when starting the application is gone, but I
> still get one when killing the application using SIGINT for the first time.
> The attached small example allows me to reliably reproduce the problem
> (please inform me if attachment didn't get through, it's only 30 lines).
>
> When starting it after system reboot and then killing it with Ctrl-C after a
> few seconds, the warning is printed:
>
> / # /tmp/try
> press ctrl-c to stop
> press ctrl-c to stop
> press ctrl-c to stop
> ^CXenomai: User-space support anterior to 2.5.2 detected, may corrupt memory
> upon
> thread termination. Upgrade is recommended
> / #
>
> The warning doesn't appear when starting and killing "try" a the second time.
Mmf, commit 90b3e7cf6 does not do what it says it does. It should read:
diff --git a/ksrc/nucleus/shadow.c b/ksrc/nucleus/shadow.c
index 5ac182b..449a9a4 100644
--- a/ksrc/nucleus/shadow.c
+++ b/ksrc/nucleus/shadow.c
@@ -2214,7 +2214,7 @@ static void handle_shadow_exit(void)
*/
if (thread->u_mode && !warned) {
warned = 1;
-#ifndef CONFIG_MMU
+#ifdef CONFIG_MMU
printk(KERN_WARNING
"Xenomai: User-space support anterior to 2.5.2"
" detected, may corrupt memory upon\n"
>
> I also experience some other problems with debugging, console output
> duplication and (probably) memory fragmentation, maybe they're related but I
> have not been able to reproduce them with a small example yet.
>
> Thanks in advance for any hints in advance!
> Kolja
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--
Philippe.
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