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authorJuha Yrjola <juha.yrjola@solidboot.com>2006-12-06 20:13:49 -0500
committerRussell King <rmk+kernel@arm.linux.org.uk>2007-05-08 15:34:47 -0400
commit0ce3356394dadc4704d42beb3788d7d78bda8ff2 (patch)
tree6996824427018460e624f6176f2eb69711be899c /arch/arm/plat-omap
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>
Diffstat (limited to 'arch/arm/plat-omap')
-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);
33 33
34static struct clk_functions *arch_clock; 34static struct clk_functions *arch_clock;
35 35
36#ifdef CONFIG_PM_DEBUG
37
38static void print_parents(struct clk *clk)
39{
40 struct clk *p;
41 int printed = 0;
42
43 list_for_each_entry(p, &clocks, node) {
44 if (p->parent == clk && p->usecount) {
45 if (!clk->usecount && !printed) {
46 printk("MISMATCH: %s\n", clk->name);
47 printed = 1;
48 }
49 printk("\t%-15s\n", p->name);
50 }
51 }
52}
53
54void clk_print_usecounts(void)
55{
56 unsigned long flags;
57 struct clk *p;
58
59 spin_lock_irqsave(&clockfw_lock, flags);
60 list_for_each_entry(p, &clocks, node) {
61 if (p->usecount)
62 printk("%-15s: %d\n", p->name, p->usecount);
63 print_parents(p);
64
65 }
66 spin_unlock_irqrestore(&clockfw_lock, flags);
67}
68
69#endif
70
36/*------------------------------------------------------------------------- 71/*-------------------------------------------------------------------------
37 * Standard clock functions defined in include/linux/clk.h 72 * Standard clock functions defined in include/linux/clk.h
38 *-------------------------------------------------------------------------*/ 73 *-------------------------------------------------------------------------*/