sending signal to a kernel thread

[Amol Lad]

[root@amol 5]# ps -ef | grep kswapd | grep -v grep
root         5     0  0 Apr04 ?        00:00:49
[kswapd]

[root@amol 5]# kill -9 5
[root@amol 5]# 

[root@amol 5]# pwd
/proc/5

[root@amol 5]# cat status
Name:   kswapd
State:  S (sleeping)
Tgid:   0
Pid:    5
PPid:   0
TracerPid:      0
Uid:    0       0       0       0
Gid:    0       0       0       0
FDSize: 32
Groups:
SigPnd: 0000000000000100
SigBlk: ffffffffffffffff
SigIgn: 0000000000000000
SigCgt: 0000000000000000
CapInh: 0000000000000000
CapPrm: 00000000ffffffff
CapEff: 00000000fffffeff
----------------------------------------

Is it ok to at all permit sending signal to kernel
thread ? 

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