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Colin Cross authored
Avoid waking up every thread sleeping in a futex_wait call 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> Acked-by:
Thomas Gleixner <tglx@linutronix.de> Acked-by:
Darren Hart <dvhart@linux.intel.com> Signed-off-by:
Colin Cross <ccross@android.com> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com>
56467c76