Commit-ID: a025e4f0d8a92b38539d39b495b530015296b4d9 Gitweb: http://git.kernel.org/tip/a025e4f0d8a92b38539d39b495b530015296b4d9 Author: Adrian Hunter <adrian.hunter@xxxxxxxxx> AuthorDate: Wed, 11 Dec 2013 14:36:35 +0200 Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> CommitDate: Fri, 13 Dec 2013 10:30:21 -0300 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@xxxxxxxxxxxxxxx> Cc: David Ahern <dsahern@xxxxxxxxx> Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: Jiri Olsa <jolsa@xxxxxxxxxx> Cc: Mike Galbraith <efault@xxxxxx> Cc: Namhyung Kim <namhyung@xxxxxxxxx> Cc: Paul Mackerras <paulus@xxxxxxxxx> Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> Cc: Stephane Eranian <eranian@xxxxxxxxxx> Link: http://lkml.kernel.org/r/1386765443-26966-24-git-send-email-alexander.shishkin@xxxxxxxxxxxxxxx Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx> Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> --- tools/perf/util/evlist.c | 17 +++++++++++++++++ tools/perf/util/evlist.h | 3 +++ 2 files changed, 20 insertions(+) diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 2eb7378..0b31cee 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 8a04aae..9f64ede 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 */ -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html