Commits
Thomas Gleixner committed a34360d4243
itimers: Use quick sample function get_itimer() locks sighand lock and checks whether the timer is already expired. If it is not expired then the thread group cputime accounting is already enabled. Use the sampling function not the one which is meant for starting a timer. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Link: https://lkml.kernel.org/r/20190821192919.689713638@linutronix.de