[Bug 741884] New: no /proc/acpi/processor/
https://bugzilla.novell.com/show_bug.cgi?id=741884 https://bugzilla.novell.com/show_bug.cgi?id=741884#c0 Summary: no /proc/acpi/processor/ Classification: openSUSE Product: openSUSE 12.1 Version: Final Platform: x86-64 OS/Version: SuSE Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel AssignedTo: kernel-maintainers@forge.provo.novell.com ReportedBy: giecrilj@stegny.2a.pl QAContact: qa@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:9.0.1) Gecko/20100101 Firefox/9.0.1 19.2.1.3. Putting the Processor to Sleep (C-states)¶ Modern processors have several power saving modes called C-states. They reflect the capability of an idle processor to turn off unused components in order to save power. The operating system puts the processor to sleep whenever there is no activity. In this case, the operating system sends the CPU a halt command. There are three idle states: C1, C2, and C3. In the most economic state, C3, even the synchronization of the processor cache with the main memory is halted. Therefore, this state can only be applied if no other device modifies the contents of the main memory via bus master activity. Some drivers prevent the use of C3. The current state is displayed in /proc/acpi/processor/*/power. Or isn‘t it? Reproducible: Always Steps to Reproduce: 1. { ls /proc/acpi/processor/; } Actual Results: 1. ls: cannot access /proc/acpi/processor/: No such file or directory Expected Results: 1. Something. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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Christopher Yeleighton
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Jeff Mahoney
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Karl Eichwalder
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Frank Sundermeyer
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--- Comment #3 from Frank Sundermeyer
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Frank Sundermeyer
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