clk: Trace clk_set_rate() "range" functions

The clk_set_rate "range" functions don't have any tracepoints even
though it might be useful. Add some.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20201207105050.2096917-1-maxime@cerno.tech
[sboyd@kernel.org: Reword commit text]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index f83dac54ed853440f76ac20249dcd9f40c4e769a..b98415d280c87e977e4c922337d541f6943bdda9 100644 (file)
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -2314,6 +2314,8 @@ int clk_set_rate_range(struct clk *clk, unsigned long min, unsigned long max)
        if (!clk)
                return 0;
 
+       trace_clk_set_rate_range(clk->core, min, max);
+
        if (min > max) {
                pr_err("%s: clk %s dev %s con %s: invalid range [%lu, %lu]\n",
                       __func__, clk->core->name, clk->dev_id, clk->con_id,
@@ -2381,6 +2383,8 @@ int clk_set_min_rate(struct clk *clk, unsigned long rate)
        if (!clk)
                return 0;
 
+       trace_clk_set_min_rate(clk->core, rate);
+
        return clk_set_rate_range(clk, rate, clk->max_rate);
 }
 EXPORT_SYMBOL_GPL(clk_set_min_rate);
@@ -2397,6 +2401,8 @@ int clk_set_max_rate(struct clk *clk, unsigned long rate)
        if (!clk)
                return 0;
 
+       trace_clk_set_max_rate(clk->core, rate);
+
        return clk_set_rate_range(clk, clk->min_rate, rate);
 }
 EXPORT_SYMBOL_GPL(clk_set_max_rate);

diff --git a/include/trace/events/clk.h b/include/trace/events/clk.h
index cb1aea25c199c29b3988c62ffe738ec769577cd4..e19edc63ee9512741c0948bffb19ba6fa28c54c9 100644 (file)
--- a/include/trace/events/clk.h
+++ b/include/trace/events/clk.h
@@ -118,6 +118,50 @@ DEFINE_EVENT(clk_rate, clk_set_rate_complete,
        TP_ARGS(core, rate)
 );
 
+DEFINE_EVENT(clk_rate, clk_set_min_rate,
+
+       TP_PROTO(struct clk_core *core, unsigned long rate),
+
+       TP_ARGS(core, rate)
+);
+
+DEFINE_EVENT(clk_rate, clk_set_max_rate,
+
+       TP_PROTO(struct clk_core *core, unsigned long rate),
+
+       TP_ARGS(core, rate)
+);
+
+DECLARE_EVENT_CLASS(clk_rate_range,
+
+       TP_PROTO(struct clk_core *core, unsigned long min, unsigned long max),
+
+       TP_ARGS(core, min, max),
+
+       TP_STRUCT__entry(
+               __string(        name,           core->name                )
+               __field(unsigned long,           min                       )
+               __field(unsigned long,           max                       )
+       ),
+
+       TP_fast_assign(
+               __assign_str(name, core->name);
+               __entry->min = min;
+               __entry->max = max;
+       ),
+
+       TP_printk("%s min %lu max %lu", __get_str(name),
+                 (unsigned long)__entry->min,
+                 (unsigned long)__entry->max)
+);
+
+DEFINE_EVENT(clk_rate_range, clk_set_rate_range,
+
+       TP_PROTO(struct clk_core *core, unsigned long min, unsigned long max),
+
+       TP_ARGS(core, min, max)
+);
+
 DECLARE_EVENT_CLASS(clk_parent,
 
        TP_PROTO(struct clk_core *core, struct clk_core *parent),