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| author | Colin Cross <ccross@android.com> | 2013-05-06 23:50:18 +0000 |
|---|---|---|
| committer | Arve Hjønnevåg <arve@android.com> | 2013-07-01 15:46:16 -0700 |
| commit | 5ccf7dfeea5b5e2e63a6d45e85335c788a69e7b2 (patch) | |
| tree | 52296bb123a61128435008831851e7fc65cd21c2 /kernel/rtmutex-debug.c | |
| parent | 947377f9be3f730f91a27d068225ba00db760ccd (diff) | |
| download | olio-linux-3.10-5ccf7dfeea5b5e2e63a6d45e85335c788a69e7b2.tar.xz olio-linux-3.10-5ccf7dfeea5b5e2e63a6d45e85335c788a69e7b2.zip | |
futex: use freezable blocking call
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.
Change-Id: I9ccab9c2d201adb66c85432801cdcf43fc91e94f
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>
Diffstat (limited to 'kernel/rtmutex-debug.c')
0 files changed, 0 insertions, 0 deletions