[Xen-devel] [PATCH] Improve xm vcpu-pin command for releasing CPU affinity

[Masaki Kanno <kanno.masaki@xxxxxxxxxxxxxx>]

Hi,

Currently, if users would like to release CPU affinity of virtual 
CPU, they should specify the following values to the third argument 
of the xm vcpu-pin command. 
 - 0-<Maximum physical CPU number>, or
 - 0-63

Generally, almost all users know the number of the physical CPU of 
the machines they are using.  Therefore when they would like to 
release CPU affinity of virtual CPU, they will be able to specify 
an appropriate value to the third argument of the xm vcpu-pin 
command.  However, I think it will be more convenient if they can 
release CPU affinity by specifying a special keyword. 

This patch improves the third argument of the xm vcpu-pin command. 
They are able to release CPU affinity of virtual CPU by specifying 
the special keyword "all". 


# xm vcpu-list vm1
Name                              ID  VCPU   CPU State   Time(s) CPU Affinity
vm1                                9     0     1   -b-     552.7 1
vm1                                9     1     0   -b-     560.2 0
# xm vcpu-pin vm1 0 all
# xm vcpu-list vm1
Name                              ID  VCPU   CPU State   Time(s) CPU Affinity
vm1                                9     0     0   -b-     553.1 any cpu
vm1                                9     1     0   -b-     560.6 0


Signed-off-by: Masaki Kanno <kanno.masaki@xxxxxxxxxxxxxx>

Best regards,
 Kan

Attachment: xm_vcpupin.patch
Description: Binary data

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