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Commit 0ce33563 authored by Juha Yrjola's avatar Juha Yrjola Committed by Russell King
Browse files

ARM: OMAP: Add function to print clock usecounts 



Useful for debugging power management code.

Signed-off-by: default avatarJuha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 3151369d

arch/arm/plat-omap/clock.c

+35 −0
Original line number Diff line number Diff line
@@ -33,6 +33,41 @@ static DEFINE_SPINLOCK(clockfw_lock); 


static struct clk_functions *arch_clock;



#ifdef CONFIG_PM_DEBUG



static void print_parents(struct clk *clk)

{

	struct clk *p;

	int printed = 0;



	list_for_each_entry(p, &clocks, node) {

		if (p->parent == clk && p->usecount) {

			if (!clk->usecount && !printed) {

				printk("MISMATCH: %s\n", clk->name);

				printed = 1;

			}

			printk("\t%-15s\n", p->name);

		}

	}

}



void clk_print_usecounts(void)

{

	unsigned long flags;

	struct clk *p;



	spin_lock_irqsave(&clockfw_lock, flags);

	list_for_each_entry(p, &clocks, node) {

		if (p->usecount)

			printk("%-15s: %d\n", p->name, p->usecount);

		print_parents(p);



	}

	spin_unlock_irqrestore(&clockfw_lock, flags);

}



#endif



/*-------------------------------------------------------------------------

 * Standard clock functions defined in include/linux/clk.h

 *-------------------------------------------------------------------------*/