Messages in this thread | | | Date | Sun, 22 Jun 2014 11:20:48 +0200 (CEST) | From | Thomas Gleixner <> | Subject | Re: [patch V4 00/10] rtmutex: Code clarification and optimization |
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On Sun, 22 Jun 2014, Ingo Molnar wrote: > * Thomas Gleixner <tglx@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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