On Tue, May 8, 2012 at 1:02 PM, Kaj Ailomaa <[email protected]> wrote:
> On 05/08/2012 09:45 PM, Scott Lavender wrote: > >> >> > I don't think this is true. > > There are at least two separate things that differ between the > ubuntu-precise kernel, and the ubuntu-precise-lowlatency kernel. > > One is a patch to the code (which I assume is the two line patch that has > been under discussion), which as I explained previously will not be needed > anymore. > The other is the configuration used for the build. For the configuration, > we only need to set a few configs differently from the standard ubuntu > kernel (it's a long list), so that we get our -lowlatency flavor kernel. > > And after adding the configs that Ralph mentioned to the ones that we > already have specific for -lowlatency, as well as the configs that makes > the current patch unnessecary, we get this list: > > CONFIG_CMDLINE_BOOL=y > CONFIG_CMDLINE="threadirqs" > > # CONFIG_RCU_BOOST is not set > # CONFIG_NTP_PPS is not set > # CONFIG_RCU_CPU_STALL_DETECTOR is not set > # CONFIG_RCU_CPU_STALL_VERBOSE is not set > # CONFIG_PREEMPT_TRACER is not set > CONFIG_TREE_PREEMPT_RCU=y > CONFIG_PREEMPT_RCU=y > CONFIG_PREEMPT_NOTIFIERS=y > # CONFIG_PREEMPT_NONE is not set > # CONFIG_PREEMPT_VOLUNTARY is not set > > CONFIG_PREEMPT=y > CONFIG_HZ_1000=y > CONFIG_HZ=1000 > CONFIG_SLAB=y > # CONFIG_EXPERT is not set > # CONFIG_NO_HZ is not set > # CONFIG_DEBUG_KERNEL is not set > > Using these configs on top of the default configs for the ubuntu-precise > kernel we get our current -lowlatency. > > > -- > Ubuntu-Studio-devel mailing list > Ubuntu-Studio-devel@lists.**ubuntu.com<[email protected]> > Modify settings or unsubscribe at: https://lists.ubuntu.com/** > mailman/listinfo/ubuntu-**studio-devel<https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-devel> > my understanding is that the patch is what actually changes the config file. perhaps I am mistaken, however. scottl
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