diff options
Diffstat (limited to 'samples/trace_events/trace-events-sample.h')
| -rw-r--r-- | samples/trace_events/trace-events-sample.h | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/samples/trace_events/trace-events-sample.h b/samples/trace_events/trace-events-sample.h index e61471ab7d14..cbbbb83beced 100644 --- a/samples/trace_events/trace-events-sample.h +++ b/samples/trace_events/trace-events-sample.h @@ -155,7 +155,7 @@ * * To assign this string, use the helper macro __assign_str_len(). * - * __assign_str(foo, bar, len); + * __assign_str_len(foo, bar, len); * * Then len + 1 is allocated to the ring buffer, and a nul terminating * byte is added. This is similar to: @@ -506,6 +506,39 @@ DEFINE_EVENT_PRINT(foo_template, foo_with_template_print, TP_ARGS(foo, bar), TP_printk("bar %s %d", __get_str(foo), __entry->bar)); +/* + * There are yet another __rel_loc dynamic data attribute. If you + * use __rel_dynamic_array() and __rel_string() etc. macros, you + * can use this attribute. There is no difference from the viewpoint + * of functionality with/without 'rel' but the encoding is a bit + * different. This is expected to be used with user-space event, + * there is no reason that the kernel event use this, but only for + * testing. + */ + +TRACE_EVENT(foo_rel_loc, + + TP_PROTO(const char *foo, int bar, unsigned long *mask), + + TP_ARGS(foo, bar, mask), + + TP_STRUCT__entry( + __rel_string( foo, foo ) + __field( int, bar ) + __rel_bitmask( bitmask, + BITS_PER_BYTE * sizeof(unsigned long) ) + ), + + TP_fast_assign( + __assign_rel_str(foo, foo); + __entry->bar = bar; + __assign_rel_bitmask(bitmask, mask, + BITS_PER_BYTE * sizeof(unsigned long)); + ), + + TP_printk("foo_rel_loc %s, %d, %s", __get_rel_str(foo), __entry->bar, + __get_rel_bitmask(bitmask)) +); #endif /***** NOTICE! The #if protection ends here. *****/ |