[dpdk-dev] [PATCH v4 5/9] app/procinfo: add support for show tm

Varghese, Vipin vipin.varghese at intel.com
Fri Nov 23 16:05:07 CET 2018


> > > > > >
> > > > > > >
> > > > > > > > +			if ((ret) | (!is_leaf))
> > > > > > > > +
> > > > > > >
> > > > > > > Is the operator here should be || ?
> > > > > > >
> > > > > > >
> > > > > >
> > > > > > Check is done for 'if either ret is not 0 or if it ret is 0
> > > > > > but not leaf' we skip leaf details print. If 'ret is 0 and is leaf'
> > > > > > we skip continue to print
> > > > > leaf details.
> > > > >
> > > > > IMO, using logical operator over bitwise operator is good here
> > > > > in if statement
> > > > .
> > > > > Like below.?
> > > > >
> > > > > If (ret || (is_leaf == 0 ))
> > > >
> > > > Thanks for the information, if the logic is correct do I need to
> > > > change for v6
> > > >
> > >
> > > OK in v6, but you can wait to hear more comments from others if any
> > > before sending v6 .
> >
> > Ok thanks Reshma, but can you tell me how the earlier logic fails and
> > runs slow compared to logical or?
> 
> Not about faster or slower.

Now I see, I was wondering the suggestion was for improvement for performance.

> 
> Logical operators are commonly used in decision making in C programming.
> Bitwise operators are used in C programming to perform bit-level operations.
> 

Agreed

> Since , above if condition is for decision making here logical || operator will fit
> , so I am suggesting to use that.
> 

But bitwise OR is not wrong right?

> We  don't need to do any bitwise manipulation in if condition to make the
> decision, so bitwise | operator is not needed

We can correct this in next patch set not v6 if this is only change for 'show tm'


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