diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2011-05-20 00:40:19 -0600 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2011-05-20 00:40:19 -0600 |
| commit | 3f397c2144e46d9127662fdb6314f21960d8563d (patch) | |
| tree | ef3401a6ac7e3b394ec10a1c586f5c1949b23edb /include/trace | |
| parent | cc300d9ead66235e23c674babb8a4ae4ad4c9db8 (diff) | |
| download | linux-3f397c2144e46d9127662fdb6314f21960d8563d.tar.gz linux-3f397c2144e46d9127662fdb6314f21960d8563d.tar.bz2 linux-3f397c2144e46d9127662fdb6314f21960d8563d.zip | |
gpio: add trace events for setting direction and value
This patch allows to trace gpio operations using ftrace
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/gpio.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/include/trace/events/gpio.h b/include/trace/events/gpio.h new file mode 100644 index 000000000000..927a8ad9e51b --- /dev/null +++ b/include/trace/events/gpio.h @@ -0,0 +1,56 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM gpio + +#if !defined(_TRACE_GPIO_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_GPIO_H + +#include <linux/tracepoint.h> + +TRACE_EVENT(gpio_direction, + + TP_PROTO(unsigned gpio, int in, int err), + + TP_ARGS(gpio, in, err), + + TP_STRUCT__entry( + __field(unsigned, gpio) + __field(int, in) + __field(int, err) + ), + + TP_fast_assign( + __entry->gpio = gpio; + __entry->in = in; + __entry->err = err; + ), + + TP_printk("%u %3s (%d)", __entry->gpio, + __entry->in ? "in" : "out", __entry->err) +); + +TRACE_EVENT(gpio_value, + + TP_PROTO(unsigned gpio, int get, int value), + + TP_ARGS(gpio, get, value), + + TP_STRUCT__entry( + __field(unsigned, gpio) + __field(int, get) + __field(int, value) + ), + + TP_fast_assign( + __entry->gpio = gpio; + __entry->get = get; + __entry->value = value; + ), + + TP_printk("%u %3s %d", __entry->gpio, + __entry->get ? "get" : "set", __entry->value) +); + +#endif /* if !defined(_TRACE_GPIO_H) || defined(TRACE_HEADER_MULTI_READ) */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> |