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authorColin Cross <ccross@android.com>2013-05-07 01:50:21 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-05-12 14:16:23 +0200
commit2b15af6f953012aac49984ead3f8ec744d941540 (patch)
tree385fa2cf0c69634c55e1753fe77138021fc6f396 /kernel/exit.c
parentsigtimedwait: use freezable blocking call (diff)
downloadlinux-2b15af6f953012aac49984ead3f8ec744d941540.tar.xz
linux-2b15af6f953012aac49984ead3f8ec744d941540.zip
af_unix: use freezable blocking calls in read
Avoid waking up every thread sleeping in read call on an AF_UNIX socket during suspend and resume by calling a freezable blocking call. Previous patches modified the freezer to avoid sending wakeups to threads that are blocked in freezable blocking calls. This call was selected to be converted to a freezable call because it doesn't hold any locks or release any resources when interrupted that might be needed by another freezing task or a kernel driver during suspend, and is a common site where idle userspace tasks are blocked. Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Colin Cross <ccross@android.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'kernel/exit.c')
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