Re: [PATCH V8 08/10] ras: acpi / apei: generate trace event for unrecognized CPER section

[Steven Rostedt]

On Wed, 15 Feb 2017 09:54:09 -0700
"Baicar, Tyler" <tbaicar@xxxxxxxxxxxxxx> wrote:
\
> 
> In v9 I currently have this and the ARM trace event from this series 
> both wrapped in an
> ifdef verifying that CONFIG_RAS is enabled. This resolves the kbuild 
> failures and
> will have this code compiled out when that config isn't enabled. Do you 
> think I
> should use the ifdef or use these *_enabled() functions?
> 

I believe you need both. The *_enabled() functions wont prevent build
errors. But since tracing is seldom enabled (usually only when you want
to see what's happening), the *_enabled() functions optimize the code
to not perform tasks that are only needed when tracing is enabled. When
I say "enabled" I mean actively tracing, as supposed to being just
enabled in the kernel.

-- Steve