pwm: Make info in traces about affected pwm more useful

The hashed pointer isn't useful to identify the pwm device. Instead
store and emit chipid and hwpwm.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/20240705211452.1157967-2-u.kleine-koenig@baylibre.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>

diff --git a/include/trace/events/pwm.h b/include/trace/events/pwm.h
index 12b35e4ff917a27c1276775d7388e54e5a244085..8022701c446d8be529f4b8b9233575f2aefa3a30 100644 (file)
--- a/include/trace/events/pwm.h
+++ b/include/trace/events/pwm.h
@@ -15,7 +15,8 @@ DECLARE_EVENT_CLASS(pwm,
        TP_ARGS(pwm, state, err),
 
        TP_STRUCT__entry(
-               __field(struct pwm_device *, pwm)
+               __field(unsigned int, chipid)
+               __field(unsigned int, hwpwm)
                __field(u64, period)
                __field(u64, duty_cycle)
                __field(enum pwm_polarity, polarity)
@@ -24,7 +25,8 @@ DECLARE_EVENT_CLASS(pwm,
        ),
 
        TP_fast_assign(
-               __entry->pwm = pwm;
+               __entry->chipid = pwm->chip->id;
+               __entry->hwpwm = pwm->hwpwm;
                __entry->period = state->period;
                __entry->duty_cycle = state->duty_cycle;
                __entry->polarity = state->polarity;
@@ -32,8 +34,8 @@ DECLARE_EVENT_CLASS(pwm,
                __entry->err = err;
        ),
 
-       TP_printk("%p: period=%llu duty_cycle=%llu polarity=%d enabled=%d err=%d",
-                 __entry->pwm, __entry->period, __entry->duty_cycle,
+       TP_printk("pwmchip%u.%u: period=%llu duty_cycle=%llu polarity=%d enabled=%d err=%d",
+                 __entry->chipid, __entry->hwpwm, __entry->period, __entry->duty_cycle,
                  __entry->polarity, __entry->enabled, __entry->err)
 
 );