--- man2/perf_event_open.2 | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/man2/perf_event_open.2 b/man2/perf_event_open.2 index 9eb92cb..9d37b44 100644 --- a/man2/perf_event_open.2 +++ b/man2/perf_event_open.2 @@ -654,7 +654,8 @@ Records a unique ID for the opened event. Unlike .B PERF_SAMPLE_ID the actual ID is returned, not the group leader. -This ID is the same as the one returned by PERF_FORMAT_ID. +This ID is the same as the one returned by +.BR PERF_FORMAT_ID . .TP .B PERF_SAMPLE_RAW Records additional data, if applicable. @@ -689,7 +690,9 @@ This is only available if the underlying hardware supports this feature. .TP .BR PERF_SAMPLE_IDENTIFIER " (Since Linux 3.12)" -Places the SAMPLE_ID value in a fixed position in the record, +Places the +.B SAMPLE_ID +value in a fixed position in the record, either at the beginning (for sample events) or at the end (if a non-sample event). @@ -698,7 +701,9 @@ records from various different event sources with different .I sample_type settings. Parsing the event stream properly was not possible because the -format of the record was needed to find SAMPLE_ID, but +format of the record was needed to find +.BR SAMPLE_ID , +but the format could not be found without knowing what event the sample belonged to (causing a circular dependency). @@ -706,8 +711,12 @@ dependency). This new .B PERF_SAMPLE_IDENTIFIER setting makes the event stream always parsable -by putting SAMPLE_ID in a fixed location, even though -it means having duplicate SAMPLE_ID values in records. +by putting +.B SAMPLE_ID +in a fixed location, even though +it means having duplicate +.B SAMPLE_ID +values in records. .RE .TP .IR "read_format" -- 1.8.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
