Re: [LTP] case "endian_switch01" FAIL on IBM Power 6 machine

[Subrata M. <su...@li...>]

On Tue, 2009-01-06 at 09:58 +0800, Nancy wrote:
> Hi,
>     Case "endian_switch01" FAIL on IBM Power 6 machine.
> 
> [root@catlp1 bin]# ./endian_switch01
> endian_switch01    1  FAIL  :  Got SIGILL - test failed
> 
>    The case failed on IBM JS22, p570 and p550. Is that the case bug or
> the OS bug? Thank you!

This will fail for all POWER machines which are not P6 & above, and, for
all other archs. However, for other archs, it will throw you appropriate
message like:

$ ./testcases/bin/endian_switch01 
endian_switch01    1  CONF  :  This system does not support running of
switch() syscall

In P6 (and above), even it will fail if the kernel is not 2.6.26 &
above. The support for this syscall was added only from then. Please
see:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=745a14cc264b1832c638e41812e0cb04328b2db1

If you are running 2.6.26 on p6, then we need to investigate why this is
failing, else, i would prefer to merge the following patch for avoiding
to test in systems where the switch() support is not available at the
first place itself.

Signed-Off-By: Subrata Modak <su...@li...>,
--
---
ltp-intermediate-20090105/testcases/kernel/syscalls/switch/endian_switch01.c.orig	2009-01-06 11:32:16.000000000 +0530
+++
ltp-intermediate-20090105/testcases/kernel/syscalls/switch/endian_switch01.c	2009-01-06 11:34:20.000000000 +0530
@@ -116,6 +116,12 @@ void do_le_switch(void) {
 }
 
 int main4(int ac, char **av, char **envp, unsigned long *auxv) {
+
+        if((tst_kvercmp(2, 6, 26)) < 0)
+        {
+                tst_resm(TCONF, "This test can only run on kernels that
are 2.6.26 and higher");
+                tst_exit();
+        }
         setup();
 	for (; *auxv != AT_NULL && *auxv != AT_HWCAP; auxv += 2)
 		;

Regards--
Subrata

>