Re: [PATCH] Remove extra local_bh_disable/enable from arch do_softirq

* Paul Mackerras [off-list ref] wrote:

At the moment, powerpc and s390 have their own versions of do_softirq 
which include local_bh_disable() and __local_bh_enable() calls.  They 
end up calling __do_softirq (in kernel/softirq.c) which also does 
local_bh_disable/enable.

Apparently the two levels of disable/enable trigger a warning from 
some validation code that Ingo is working on, and he would like to see 
the outer level removed.  But to do that, we have to move the 
account_system_vtime calls that are currently in the arch do_softirq() 
implementations for powerpc and s390 into the generic __do_softirq() 
(this is a no-op for other archs because account_system_vtime is 
defined to be an empty inline function on all other archs).  This 
patch does that.

Signed-off-by: Paul Mackerras <redacted>

thanks - this solves the problem nicely.

Acked-by: Ingo Molnar <redacted>

	Ingo