svn commit: r192591 - head/sys/fs/nfsserver

Bjoern A. Zeeb bzeeb-lists at
Sat May 23 11:41:32 UTC 2009

> On Fri, 22 May 2009, Sam Leffler wrote:
>> I requested the printf identify the call site; e.g.
>> printf("%s: out of clientids\n", __func__);
> That is equally cryptic _with_ grepping through the source code, and
> much uglier.  __func__ should only be used when the function name is
> not a literal constant (mainly in macros).

Even if I am going to regret this: I strongly say "NO" here.

Using __func__ in printfs helps for a lot of things. Let me tell you
the three that mostly annoyed me over the last months, constantly
tripping over:

- people move code from one function to another and do not update all
   the printfs. __func__ does that for you.
- people copy and paste code and do not update the printfs and old
   function names, sometimes entirely unrelated, even in KASSERTs, stay.
   __func__ does not have that problem.
- if I want to find function definitions and function calls using gre
   I do not want to find 47 printfs with the function name as well.
   __func__ does not show up in grep.

I strongly vote for using __func__ in printfs!

Bjoern A. Zeeb                      The greatest risk is not taking one.

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