Re: [PATCH] trace, RAS: remove unnecessary const

From: Steven Rostedt
Date: Thu Mar 19 2015 - 09:00:11 EST


On Thu, 19 Mar 2015 19:57:17 +0800
Xie XiuQi <xiexiuqi@xxxxxxxxxx> wrote:

> On 2015/3/19 18:33, Borislav Petkov wrote:
> > On Thu, Mar 19, 2015 at 04:50:04PM +0800, Xie XiuQi wrote:
> >> These parameters are passed by value. There's no need to make them const.
> >
> > I can think of a reason:
> >
> > include/trace/../../include/ras/ras_event.h: In function âftrace_raw_event_mc_eventâ:
> > include/trace/../../include/ras/ras_event.h:136:35: error: assignment of read-only parameter âtop_layerâ
> > __entry->top_layer = top_layer = 12;
>
> Oh, indeed. Thanks, Boris!
>

Don't get too excited about that answer. If this is indeed the case,
then all functions with parameters that do not get modify later should
be set to const. Do we really want that? And how does this fix:

__entry->top_layer = 12;

-- Steve
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