rcu: Fix missing TICK_DEP_MASK_RCU_EXP dependency check
authorZqiang <qiang1.zhang@intel.com>
Tue, 20 Dec 2022 14:16:25 +0000 (22:16 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 11 May 2023 14:03:06 +0000 (23:03 +0900)
commitae6803b66365e00739b3066da8f0f6356e50241f
tree7f16680af5a0b3eff9ab57f2920f9e41f4095be1
parent05f437eba011a140191b2064561abc45703f8049
rcu: Fix missing TICK_DEP_MASK_RCU_EXP dependency check

[ Upstream commit db7b464df9d820186e98a65aa6a10f0d51fbf8ce ]

This commit adds checks for the TICK_DEP_MASK_RCU_EXP bit, thus enabling
RCU expedited grace periods to actually force-enable scheduling-clock
interrupts on holdout CPUs.

Fixes: df1e849ae455 ("rcu: Enable tick for nohz_full CPUs slow to provide expedited QS")
Signed-off-by: Zqiang <qiang1.zhang@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Anna-Maria Behnsen <anna-maria@linutronix.de>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
include/trace/events/timer.h
kernel/time/tick-sched.c