[Devel] PPC64 Kernel 2.6.18 + RPM packages

[Kirill Korotaev]

Christian, please check the patch attached.

Kirill

Christian Kaiser2 wrote:
> Kirill Korotaev <dev at sw.ru> wrote on 05/25/2007 02:41:09 PM:
> 
> 
>>Christian,
>>
>>sys_fairsched_chwt() can return ENOENT in the only case:
>>when fairsched node ID was not found in the list.
>>but VE0 node is always on the list.
>>So I guess there is something wrong with syscall args in your case.
>>
>>Please apply the attached patch to the kernel and vzctl
>>recompile/reboot and report the output of both.
>>
>>Thanks,
>>Kirill
>>
>>
> 
> 
> OK! here it is:
> 
> 1. vzctl:
> 
> [root at s10b10-0 ~]# vzctl set 0 --cpuunits 1000
> Setting CPU units: 1000
> vzctl: fairsched_chwt(2147483647, 500)
> fairsched_chwt: No such file or directory
> 
> 2. kernel messages (dmesg):
> 
>   fairsched_find: search 500, node: 2147483647/2147483647
> 
> 
>>>When, where and what should return "-ENOSYS"?
>>>
>>>I rechecked my .config file and I've seen that
>>>CONFIG_SCHED_VCPU=y
>>>CONFIG_FAIRSCHED=y
>>>is already in it. But I cannot find it in the menuconfig. The menu of
>>>powerpc architecture is a bit different than i386. So perhaps I just
>>>haven't seen it... where should I find it then?
>>>
>>>So what I posted before is perhaps wrong. CONFIG_FAIRSCHED _was set_ in
>>>.config file. But I got the error "fairsched_chwt: No such file or
>>>directory".
>>>
>>>Mit freundlichen Grüßen / Best Regards
>>>Christian Kaiser
>>>
>>>
>>
>>--- ./kernel/fairsched.c.ve2350   2007-05-24 11:48:18.000000000 +0400
>>+++ ./kernel/fairsched.c   2007-05-25 16:36:36.000000000 +0400
>>@@ -618,6 +618,7 @@ static struct fairsched_node *fairsched_
>>    struct fairsched_node *p;
>>
>>    for_each_fairsched_node(p) {
>>+      printk("  fairsched_find: search %u, node: %d/%u\n", id, p->id,
> 
> p->id);
> 
>>       if (p->id == id)
>>          return p;
>>    }
>>@@ -734,9 +735,13 @@ int do_fairsched_chwt(unsigned int id, u
>>    if (weight < 1 || weight > FSCHWEIGHT_MAX)
>>       return -EINVAL;
>>
>>+   printk("do_fairsched_chwt: node %u, w %u\n", id, weight);
>>    node = fairsched_find(id);
>>-   if (node == NULL)
>>+   if (node == NULL) {
>>+      printk("do_fairsched_chwt: ENOENT\n");
>>       return -ENOENT;
>>+   }
>>+   printk("do_fairsched_chwt: found\n");
>>
>>    spin_lock_irq(&fairsched_lock);
>>    node->weight = weight;
>>diff --git a/src/lib/cpu.c b/src/lib/cpu.c
>>index 947d973..b0b53a7 100644
>>--- a/src/lib/cpu.c
>>+++ b/src/lib/cpu.c
>>@@ -74,7 +74,7 @@ static int set_cpulimit(envid_t veid, un
>>
>> static int set_cpuweight(envid_t veid, unsigned int cpuweight)
>> {
>>-
>>+   logger(0, 0, "vzctl: fairsched_chwt(%u, %u)", veid, cpuweight);
>>    if (fairsched_chwt(veid, cpuweight)) {
>>       logger(-1, errno, "fairsched_chwt");
>>       return VZ_SETFSHD_ERROR;
> 
> 
> Mit freundlichen Grüßen / Best Regards
> Christian Kaiser
> --
> IBM Deutschland Entwicklung GmbH
> Open Systems Firmware Development
> mail: ckaiser2 at de.ibm.com
> 
> IBM Deutschland Entwicklung GmbH
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> 
> 
> 

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