From: Thomas Renninger <trenn@suse.de>
To: akpm@linux-foundation.org
Cc: lenb@kernel.org, len.brown@intel.com, linux-acpi@vger.kernel.org,
shaohua.li@intel.com
Subject: Re: [patch 1/3] intel_idle: fix API misuse
Date: Tue, 17 Jan 2012 11:37:58 +0100 [thread overview]
Message-ID: <201201171137.58857.trenn@suse.de> (raw)
In-Reply-To: <20120110234819.7F484100270@wpzn3.hot.corp.google.com>
On Wednesday, January 11, 2012 12:48:19 AM akpm@linux-foundation.org wrote:
> From: Shaohua Li <shaohua.li@intel.com>
> Subject: intel_idle: fix API misuse
This one looks worth adding:
CC: stable@vger.kernel.org
> smp_call_function() only lets all other CPUs execute a specific function,
> while we expect all CPUs do in intel_idle. Without the fix, we could have
> one cpu which has auto_demotion enabled or has no boradcast timer setup.
> Usually we don't see impact because auto demotion just harms power and the
> intel_idle init is called in CPU 0, where boradcast timer delivers
> interrupt, but this still could be a problem.
>
> Signed-off-by: Shaohua Li <shaohua.li@intel.com>
> Cc: Len Brown <lenb@kernel.org>
> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
CC: stable@vger.kernel.org
Thomas
next prev parent reply other threads:[~2012-01-17 10:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-10 23:48 [patch 1/3] intel_idle: fix API misuse akpm
2012-01-17 10:37 ` Thomas Renninger [this message]
2012-01-18 0:21 ` Andrew Morton
2012-01-18 0:55 ` Greg KH
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