diff options
| author | Adrian Hunter | 2013-12-11 14:36:35 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo | 2013-12-13 10:30:21 -0300 |
| commit | a025e4f0d8a92b38539d39b495b530015296b4d9 (patch) | |
| tree | 8e219d03a54173786f79871d1867ef2bf6c720a0 | |
| parent | 8d00be815c05ed0f0202f606bab4e54f98fd3b30 (diff) | |
perf evlist: Add perf_evlist__to_front()
Add a function to move a selected event to the
front of the list.
This is needed because it is not possible
to use the PERF_EVENT_IOC_SET_OUTPUT IOCTL
from an Instruction Tracing event to a
non-Instruction Tracing event. Thus the
Instruction Tracing event must come first.
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1386765443-26966-24-git-send-email-alexander.shishkin@linux.intel.com
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/evlist.c | 17 | ||||
| -rw-r--r-- | tools/perf/util/evlist.h | 3 |
2 files changed, 20 insertions, 0 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 2eb7378e4c40..0b31cee34874 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -1212,3 +1212,20 @@ int perf_evlist__strerror_open(struct perf_evlist *evlist __maybe_unused, return 0; } + +void perf_evlist__to_front(struct perf_evlist *evlist, + struct perf_evsel *move_evsel) +{ + struct perf_evsel *evsel, *n; + LIST_HEAD(move); + + if (move_evsel == perf_evlist__first(evlist)) + return; + + list_for_each_entry_safe(evsel, n, &evlist->entries, node) { + if (evsel->leader == move_evsel->leader) + list_move_tail(&evsel->node, &move); + } + + list_splice(&move, &evlist->entries); +} diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index 8a04aae95a18..9f64ede3ecbd 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -194,5 +194,8 @@ static inline void perf_mmap__write_tail(struct perf_mmap *md, } bool perf_evlist__can_select_event(struct perf_evlist *evlist, const char *str); +void perf_evlist__to_front(struct perf_evlist *evlist, + struct perf_evsel *move_evsel); + #endif /* __PERF_EVLIST_H */ |