diff options
| -rw-r--r-- | drivers/clk/clk.c | 55 | ||||
| -rw-r--r-- | include/trace/events/clk.h | 38 |
2 files changed, 92 insertions, 1 deletions
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 4a9e034f939f..4996f4f312f4 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -2326,6 +2326,56 @@ static struct hlist_head *orphan_list[] = { 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) { @@ -3002,6 +3052,11 @@ static int __init clk_debug_init(void) if (!d) return -ENOMEM; + d = debugfs_create_file("trace_clocks", S_IRUGO, 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 758607226bfd..ad19e73ecb5d 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 @@ DEFINE_EVENT(clk_phase, clk_set_phase_complete, 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 */ |