microblaze: Improve ftrace time measuring (6f34b08f) · Commits · 戴 / test

arch/microblaze/include/asm/setup.h

+0 −2

Original line number	Diff line number	Diff line
		@@ -28,8 +28,6 @@ void disable_early_printk(void);
		void heartbeat(void);
		void setup_heartbeat(void);

		unsigned long long sched_clock(void);

		# ifdef CONFIG_MMU
		extern void mmu_reset(void);
		extern void early_console_reg_tlb_alloc(unsigned int addr);

+17 −0

Original line number	Diff line number	Diff line
		@@ -235,6 +235,12 @@ static int __init microblaze_clocksource_init(void)
		return 0;
		}

		/*
		* We have to protect accesses before timer initialization
		* and return 0 for sched_clock function below.
		*/
		static int timer_initialized;

		void __init time_init(void)
		{
		u32 irq, i = 0;
		@@ -289,4 +295,15 @@ void __init time_init(void)
		#endif
		microblaze_clocksource_init();
		microblaze_clockevent_init();
		timer_initialized = 1;
		}

		unsigned long long notrace sched_clock(void)
		{
		if (timer_initialized) {
		struct clocksource *cs = &clocksource_microblaze;
		cycle_t cyc = cs->read(NULL);
		return clocksource_cyc2ns(cyc, cs->mult, cs->shift);
		}
		return 0;
		}