Merge tag 'smp-urgent-2020-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip (82423b46) · Commits · 戴 / test

Pull smp fix from Thomas Gleixner: "A single fix for stop machine. Mark functions no trace to prevent a crash caused by recursion when enabling or disabling a tracer on RISC-V (probably all architectures which patch through stop machine)" * tag 'smp-urgent-2020-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: stop_machine, rcu: Mark functions as notrace

kernel/rcu/tree.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -409,7 +409,7 @@ bool rcu_eqs_special_set(int cpu)
		*
		* The caller must have disabled interrupts and must not be idle.
		*/
		void rcu_momentary_dyntick_idle(void)
		notrace void rcu_momentary_dyntick_idle(void)
		{
		int special;

kernel/stop_machine.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -178,7 +178,7 @@ static void ack_state(struct multi_stop_data *msdata)
		set_state(msdata, msdata->state + 1);
		}

		void __weak stop_machine_yield(const struct cpumask *cpumask)
		notrace void __weak stop_machine_yield(const struct cpumask *cpumask)
		{
		cpu_relax();
		}

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