Groups > linux.kernel > #1219860

Re: Problems booting 4.1.6

From	Matt <jackdachef@gmail.com>
Newsgroups	linux.kernel
Subject	Re: Problems booting 4.1.6
Date	2015-09-06 23:10 +0200
Message-ID	<q5Pmi-1Sa-9@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Hi Peter,


does the following patch help:

x86/idle: Restore trace_cpu_idle to mwait_idle() calls

http://marc.info/?l=linux-kernel&m=144009977312088



x86/idle: Restore trace_cpu_idle to mwait_idle() calls

Commit b253149b843f ("sched/idle/x86: Restore mwait_idle() to fix boot
hangs, to improve power savings and to improve performance") restores
mwait_idle(), but the trace_cpu_idle related calls are missing. This
causes powertop on my old desktop powered by Intel Core2 E6550 to
report zero wakeups and zero events.

Add them back to restore the proper behaviour.



Greetings,

Matt
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Re: Problems booting 4.1.6 Matt <jackdachef@gmail.com> - 2015-09-06 23:10 +0200

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