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| author |   Adrian Hunter <adrian.hunter@intel.com> | 2022-07-11 12:31:48 +0300 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-07-20 11:07:48 -0300 |
| commit | 0a64de04c94ad4285120bed0dfb382ea98d6d499 (patch) | |
| tree | 571a8a6c3b4f8f5eb2c8efe8610ca4e1ea1d7244 /tools/perf/util/evsel.h | |
| parent | perf tools: Export perf_event__process_finished_round() (diff) | |
| download | linux-dev-0a64de04c94ad4285120bed0dfb382ea98d6d499.tar.xz linux-dev-0a64de04c94ad4285120bed0dfb382ea98d6d499.zip | |
perf tools: Factor out evsel__id_hdr_size()
Factor out evsel__id_hdr_size() so it can be reused.
This is needed by perf inject. When injecting events from a guest perf.data
file, there is a possibility that the sample ID numbers conflict. To
re-write an ID sample, the old one needs to be removed first, which means
determining how big it is with evsel__id_hdr_size() and then subtracting
that from the event size.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: kvm@vger.kernel.org
Link: https://lore.kernel.org/r/20220711093218.10967-6-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | tools/perf/util/evsel.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 92bed8e2f7d8..699448f2bc2b 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -381,6 +381,8 @@ int evsel__parse_sample(struct evsel *evsel, union perf_event *event, int evsel__parse_sample_timestamp(struct evsel *evsel, union perf_event *event, u64 *timestamp); +u16 evsel__id_hdr_size(struct evsel *evsel); + static inline struct evsel *evsel__next(struct evsel *evsel) { return list_entry(evsel->core.node.next, struct evsel, core.node); |