lkml.org 
[lkml]   [2016]   [Feb]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH] branch tracer: fix freak link error
Date
On Friday 12 February 2016 17:12:37 Steven Rostedt wrote:
> On Fri, 12 Feb 2016 22:52:10 +0100
> Arnd Bergmann <arnd@arndb.de> wrote:
>
> > On Friday 12 February 2016 22:49:07 Arnd Bergmann wrote:
> > > Now I have to check if it does anything to the spurious "maybe-uninitialized"
> > > warnings that I saw creeping in with PROFILE_ALL_BRANCHES. My guess is
> > > that it doesn't fix them (I submitted a patch to turn off those
> > > warnings today when PROFILE_ALL_BRANCHES is set), but I'll try anyway.
> >
> > Ok, that was easy: they are all still there, so we still need to
> > pass -Wno-maybe-uninitialized when using PROFILE_ALL_BRANCHES to
> > avoid flooding the log with useless warnings.
>
> Yeah, those warnings were the reason I turned PROFILE_ALL_BRANCHES into
> a tristate and not a boolean, otherwise a make allmodconfig or
> allyesconfig would enable it and spam the compile with those warnings.
>
> I simply ignore them, so adding a way to turn them off when that is
> enabled is probably a good idea.

Ok. The series I sent today was titled "[PATCH 0/5] gcov fixes and
maybe-uninitialized warnings", and I disable the warnings for
both GCOV_PROFILE_ALL and PROFILE_ALL_BRANCHES there, along with
CC_OPTIMIZE_FOR_SIZE and UBSAN_SANITIZE_ALL that already do that
today.

The patch series also makes sure that all four options are disabled
in allmodconfig (today they are disabled because of CC_OPTIMIZE_FOR_SIZE)
and the remaining warnings I get in both allmodconfig and randconfig
are finally useful.

Arnd

\
 
 \ /
  Last update: 2016-02-12 23:41    [W:0.048 / U:0.536 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site