On Sun, 22 Jun 2014, Ingo Molnar wrote:
> * Thomas Gleixner <t...@linutronix.de> wrote:
>
> > Hopefully the last iteration of this.
> >
> > I addressed all the review comments and added the following new ones:
> >
> > 1/n: plug unlock race.
> >
> > Patch was separately posted already in the safety of
> > *mutex_unlock() thread.
> >
> > 2/n: Document and simplify the trylock path
> >
> > 3/n: Document and simplify try_to_take_rtmutex()
>
> JFYI, the Blackfin cross-build fails with:
>
> /home/mingo/tip/kernel/locking/rtmutex.c: In function
> 'rt_mutex_adjust_prio_chain':
> /home/mingo/tip/kernel/locking/rtmutex.c:739: error: unable to find a
> register to spill in class 'CCREGS'
> /home/mingo/tip/kernel/locking/rtmutex.c:739: error: this is the insn:
> (insn 82 75 107 2 /home/mingo/tip/kernel/locking/rtmutex.c:487 (set
> (reg:BI 186)
> (eq:BI (reg/v/f:SI 9 P1 [orig:85 top_waiter ] [85])
> (const_int 0 [0x0]))) 111 {compare_eq} (nil))
> /home/mingo/tip/kernel/locking/rtmutex.c:739: confused by earlier errors,
> bailing out
https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.6.3/x86_64-gcc-4.6.3-nolibc_bfin-uclinux.tar.xz
compiles that file nicely.
Thanks,
tglx
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