Merge "clk: Add support to dump state of all clocks into ftrace" into msm-4.9
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index b248b1b..beffe35 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -2345,6 +2345,56 @@
NULL,
};
+static void clk_state_subtree(struct clk_core *c)
+{
+ int vdd_level = 0;
+ struct clk_core *child;
+
+ if (!c)
+ return;
+
+ if (c->vdd_class) {
+ vdd_level = clk_find_vdd_level(c, c->rate);
+ if (vdd_level < 0)
+ vdd_level = 0;
+ }
+
+ trace_clk_state(c->name, c->prepare_count, c->enable_count,
+ c->rate, vdd_level);
+
+ hlist_for_each_entry(child, &c->children, child_node)
+ clk_state_subtree(child);
+}
+
+static int clk_state_show(struct seq_file *s, void *data)
+{
+ struct clk_core *c;
+ struct hlist_head **lists = (struct hlist_head **)s->private;
+
+ clk_prepare_lock();
+
+ for (; *lists; lists++)
+ hlist_for_each_entry(c, *lists, child_node)
+ clk_state_subtree(c);
+
+ clk_prepare_unlock();
+
+ return 0;
+}
+
+
+static int clk_state_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, clk_state_show, inode->i_private);
+}
+
+static const struct file_operations clk_state_fops = {
+ .open = clk_state_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
static void clk_summary_show_one(struct seq_file *s, struct clk_core *c,
int level)
{
@@ -2980,6 +3030,11 @@
if (!d)
return -ENOMEM;
+ d = debugfs_create_file("trace_clocks", 0444, rootdir, &all_lists,
+ &clk_state_fops);
+ if (!d)
+ return -ENOMEM;
+
mutex_lock(&clk_debug_lock);
hlist_for_each_entry(core, &clk_debug_list, debug_node)
clk_debug_create_one(core, rootdir);
diff --git a/include/trace/events/clk.h b/include/trace/events/clk.h
index 7586072..ad19e73 100644
--- a/include/trace/events/clk.h
+++ b/include/trace/events/clk.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014-2015, 2017, The Linux Foundation. All rights reserved.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
@@ -192,6 +192,42 @@
TP_ARGS(core, phase)
);
+DECLARE_EVENT_CLASS(clk_state_dump,
+
+ TP_PROTO(const char *name, unsigned int prepare_count,
+ unsigned int enable_count, unsigned long rate, unsigned int vdd_level),
+
+ TP_ARGS(name, prepare_count, enable_count, rate, vdd_level),
+
+ TP_STRUCT__entry(
+ __string(name, name)
+ __field(unsigned int, prepare_count)
+ __field(unsigned int, enable_count)
+ __field(unsigned long, rate)
+ __field(unsigned int, vdd_level)
+ ),
+
+ TP_fast_assign(
+ __assign_str(name, name);
+ __entry->prepare_count = prepare_count;
+ __entry->enable_count = enable_count;
+ __entry->rate = rate;
+ __entry->vdd_level = vdd_level;
+ ),
+
+ TP_printk("%s\tprepare:enable cnt [%u:%u]\trate: vdd_level [%lu:%u]",
+ __get_str(name), __entry->prepare_count, __entry->enable_count,
+ __entry->rate, __entry->vdd_level)
+);
+
+DEFINE_EVENT(clk_state_dump, clk_state,
+
+ TP_PROTO(const char *name, unsigned int prepare_count,
+ unsigned int enable_count, unsigned long rate, unsigned int vdd_level),
+
+ TP_ARGS(name, prepare_count, enable_count, rate, vdd_level)
+);
+
#endif /* _TRACE_CLK_H */
/* This part must be outside protection */