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authorJuha Yrjola <juha.yrjola@solidboot.com>2006-12-06 17:13:49 -0800
committerRussell King <rmk+kernel@arm.linux.org.uk>2007-05-08 20:34:47 +0100
commit0ce3356394dadc4704d42beb3788d7d78bda8ff2 (patch)
tree6996824427018460e624f6176f2eb69711be899c
parent3151369d7467a37386e955e6f1ba5b9b5bea7500 (diff)
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>
-rw-r--r--arch/arm/plat-omap/clock.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
index f1179ad4be1b..3d017b04784b 100644
--- a/arch/arm/plat-omap/clock.c
+++ b/arch/arm/plat-omap/clock.c
@@ -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
*-------------------------------------------------------------------------*/