ARM: OMAP: Add function to print clock usecounts
authorJuha Yrjola <juha.yrjola@solidboot.com>
Thu, 7 Dec 2006 01:13:49 +0000 (17:13 -0800)
committerRussell King <rmk+kernel@arm.linux.org.uk>
Tue, 8 May 2007 19:34:47 +0000 (20:34 +0100)
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>
arch/arm/plat-omap/clock.c

index f1179ad..3d017b0 100644 (file)
@@ -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
  *-------------------------------------------------------------------------*/