At start, emerge checks for the following kernel options: * Messages for package sys-power/powertop-2.1-r1: * Package: sys-power/powertop-2.1-r1 * Repository: gentoo * Maintainer: mobile@gentoo.org * USE: amd64 elibc_glibc kernel_linux multilib unicode userland_GNU * FEATURES: ccache sandbox * Package: sys-power/powertop-2.1-r1 * Repository: gentoo * Maintainer: mobile@gentoo.org * USE: amd64 elibc_glibc kernel_linux multilib unicode userland_GNU * FEATURES: ccache sandbox * Determining the location of the kernel source code * Found kernel source directory: * /usr/src/linux * Found sources for kernel version: * 3.5.3-gentoo * Checking for suitable kernel configuration options... * CONFIG_TRACEPOINTS: is not set when it should be. * CONFIG_EVENT_POWER_TRACING_DEPRECATED: is not set when it should be. * CONFIG_TRACING: is not set when it should be. * Please check to make sure these options are set correctly. * Failure to do so may cause unexpected problems. Kernel 3.5.3 doesn't have these options in its config file.
That's wrong, they are there if you activate the tracing stuff under kernel hacking. Main problem is that they're not listed at all and thus hard to find (just had to search for a bit myself).
I was missing these as well, you need to enable CONFIG_BLK_DEV_IO_TRACE first and that reveals the rest.
Thanks for your answers, but I can't find CONFIG_BLK_DEV_IO_TRACE under kernel hacking to enable it. I can't see any of the options mentioned here, neither in the menu nor in the config file itself. I always generate my new .config out of my old one with 'make oldconfig'. Is it possible that this hides some options? I'll try it with a blank config on weekend. May you help others with the same problem, by giving a hint together with the warning? Thanks and greetings, Berthold
(In reply to comment #3) > Thanks for your answers, but I can't find CONFIG_BLK_DEV_IO_TRACE under > kernel hacking to enable it. > > I can't see any of the options mentioned here, neither in the menu nor in > the config file itself. > > I always generate my new .config out of my old one with 'make oldconfig'. Is > it possible that this hides some options? > > I'll try it with a blank config on weekend. > > May you help others with the same problem, by giving a hint together with > the warning? > > Thanks and greetings, > > Berthold I updated the ebuild several hours ago to help you enable this stuff. Please sync and stop commenting on a closed bug.
