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ARM: OMAP: Add function to print clock usecounts 

Useful for debugging power management code.

Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Juha Yrjola 2006-12-06 17:13:49 -08:00 committed by Russell King
parent 3151369d74
commit 0ce3356394
1 changed files with 35 additions and 0 deletions
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35
arch/arm/plat-omap/clock.c
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@ -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
*-------------------------------------------------------------------------*/