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* K.R. Foley <kr@cybsft.com> wrote: > Just had an opportunity to check this. Everything does indeed seem to > be working OK with this disabled. No lock up messages, no perceived > problems. btw., you have this enabled in your config: CONFIG_DEBUG_RT_LOCKING_MODE=y this causes old-style spinlocking to be activated by default. I.e. you dont get most of the benefits of PREEMPT_RT. You can reactivate it via: echo 1 > /proc/sys/kernel/preempt_locks but obviously this runtime flag involves some runtime overhead in the locking code. This .config option is mainly meant to enable the measurement of the locking overhead of PREEMPT_RT, and to debug boot problems that might be related to PREEMPT_RT locking. So you'd almost always want to run with DEBUG_RT_LOCKING_MODE turned off. Ingo - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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