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From: Mark Lord <lkml@rtr.ca>
To: yi.y.yang@intel.com
Cc: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org,
	lenb@kernel.org, acpi-bugzilla@lists.sourceforge.net
Subject: Re: [PATCH] ACPI: create proc entry 'power' only if C2 or C3 is	supported
Date: Thu, 24 Jan 2008 09:43:00 -0500	[thread overview]
Message-ID: <4798A3F4.1070302@rtr.ca> (raw)
In-Reply-To: <1201135532.3969.3.camel@yangyi-dev.bj.intel.com>

> Subject: ACPI: Create proc entry 'power' only C2 or C3 is supported
> From: Yi Yang <yi.y.yang@intel.com>
> 
> ACPI processor idle driver makes sense only if the processor supports
> C2 or C3. For legacy C0 and C1, just the original pm_idle is working
> , statistics info about promotion, demotion, latency, usage and
> duration are empty or 0, so these are misleading, users'll think their
> CPUs support C states (C2 or C3), /proc/acpi/processor/CPU*/power
> shouldn't exist for this case at all.
..

On the other hand, this change might send many of us scrambling
to try and figure out which kernel CONFIG option is responsible
for the expected /proc/acpi/processor/CPU*/power entries not showing up.
Thus just adding to the confusion by as much as it saves.

What do others think?



  reply	other threads:[~2008-01-24 14:43 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-12-27  6:47 [PATCH linux-acpi] Fix /proc/acpi/alarm set error Yi Yang
2007-12-27  8:41 ` [PATCH linux-acpi] Remove superfluous code and correct counting error in function acpi_system_write_alarm Yi Yang
2007-12-29  8:22   ` [PATCH linux-acpi] Correct wakeup set error and append a new column PCI ID Yi Yang
2008-01-01 23:20     ` Pavel Machek
2008-01-02  2:03       ` Yi Yang
2008-01-02 16:09         ` Pavel Machek
2008-01-03  2:02           ` Yi Yang
2008-01-03  2:11           ` Yi Yang
2008-01-04  8:16     ` [PATCH linux-acpi] fix acpi fan state set error Yi Yang
2008-01-07  6:56       ` [PATCH] ACPI: fix processor throttling " Yi Yang
2008-01-08  3:21         ` [PATCH] ACPI: fix processor limit " Yi Yang
2008-01-24  0:45           ` [PATCH] ACPI: create proc entry 'power' only if C2 or C3 is supported Yi Yang
2008-01-24 14:43             ` Mark Lord [this message]
2008-01-09 22:21         ` [PATCH] ACPI: Add sysfs interface for acpi device wakeup Yi Yang
2008-01-10  7:43           ` Maxim Levitsky
2008-01-09 23:59             ` Yi Yang
2008-01-10 10:30               ` Matthew Garrett
2008-01-13 18:16               ` Pavel Machek
2008-01-11  8:16             ` Zhang Rui
2008-01-10 23:55               ` Yi Yang
2008-03-19 13:06                 ` Thomas Renninger
2008-03-19 14:37                   ` Yi Yang
2008-03-20  4:32                     ` Zhao Yakui
2008-03-19 18:52                   ` David Brownell
2008-03-20  5:12                     ` Zhao Yakui
2008-03-20  6:12                       ` David Brownell

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