On Tue, 2014-05-27 at 15:44 +0800, Libo Chen wrote: > On 2014/5/26 22:03, Mike Galbraith wrote: > > On Mon, 2014-05-26 at 19:49 +0800, Libo Chen wrote: > > > >> how to turn off SD_SHARE_PKG_RESOURCES in userspace ? > > > > I use a script Ingo gave me years and years ago to > > twiddle /proc/sys/kernel/sched_domain/cpuN/domainN/flags domain wise. > > Doing that won't do you any good without a handler to build/tear down > > sd_llc when you poke at flags though. You can easily add a sched > > feature to play with it. > > > I make a simple script： > > for ((i=0;i<=15;i++)) > do > echo 4143 > /proc/sys/kernel/sched_domain/cpu$i/domain1/flags > done > > In our kernel SD_SHARE_PKG_RESOURCE is 0x0200, the original flag value is > 4655, > domain1's name is MC. > > but migrations event doesn't reduce like yours, what problem? I wouldn't like > recompile kernel :(
Hm, I thought you were a kernel hacker, but guess not since that would be a really weird thing for a kernel hacker to say :) Problem is that there's no handler in your kernel to convert your flag poking to sd_llc poking. I could send you a patchlet, but that ain't gonna work, neither that nor the commit I pointed out will seep into the kernel via osmosis. There should be a kernel hacker somewhere near you, look down the hall by the water cooler, when you find one, he/she should be able to help. -Mike -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
