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s390/cpu: remove cpu "capabilities" sysfs attribute

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It has been a big mistage to add the capabilities attribute to the
cpus in sysfs:
First the attribute only contains the cpu capability of primary cpus,
which however is not necessarily (or better: unlikely) the type of
cpu the kernel runs on, which is typically an IFL.
In addition all information that is necessary is available in
/proc/sysinfo already. So this attribute partially duplicated
informations.
So programs should look into the sysinfo file to retrieve all
informations they are interested in.

Since with this kernel release also the powersavings cpu attributes
are removed this seems to be a good opportunity to remove another
broken interface.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens
2012-05-25 09:39:29 +02:00
committed by Martin Schwidefsky
parent 061da3dfb2
commit b9e3f776c8
3 changed files with 0 additions and 36 deletions
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arch/s390/kernel/sysinfo.c
-21
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@@ -392,27 +392,6 @@ static __init int create_proc_service_level(void)
}
subsys_initcall(create_proc_service_level);
/*
* Bogomips calculation based on cpu capability.
*/
int get_cpu_capability(unsigned int *capability)
{
struct sysinfo_1_2_2 *info;
int rc;
info = (void *) get_zeroed_page(GFP_KERNEL);
if (!info)
return -ENOMEM;
rc = stsi(info, 1, 2, 2);
if (rc == -ENOSYS)
goto out;
rc = 0;
*capability = info->capability;
out:
free_page((unsigned long) info);
return rc;
}
/*
* CPU capability might have changed. Therefore recalculate loops_per_jiffy.
*/