kernel: sched: inline update_cache (121cb49a) · Commits · Wenxi XU / zephyr

This improves context switching by 7% when measured using the thread_metric benchmark. Before: **** Thread-Metric Preemptive Scheduling Test **** Relative Time: 120 Time Period Total: 5451879 After: **** Thread-Metric Preemptive Scheduling Test **** Relative Time: 30 Time Period Total: 5853535 Signed-off-by:

Anas Nashif <anas.nashif@intel.com>

kernel/sched.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -35,7 +35,7 @@ struct k_spinlock _sched_spinlock;
		*/
		__incoherent struct k_thread _thread_dummy;

		static void update_cache(int preempt_ok);
		static ALWAYS_INLINE void update_cache(int preempt_ok);
		static void halt_thread(struct k_thread *thread, uint8_t new_state);
		static void add_to_waitq_locked(struct k_thread thread, _wait_q_t wait_q);

		@@ -320,7 +320,7 @@ static void update_metairq_preempt(struct k_thread *thread)
		*/
		}

		static void update_cache(int preempt_ok)
		static ALWAYS_INLINE void update_cache(int preempt_ok)
		{
		#ifndef CONFIG_SMP
		struct k_thread *thread = next_up();

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