diff options
| -rw-r--r-- | tools/perf/arch/arm/util/cs-etm.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/arch/arm/util/cs-etm.c b/tools/perf/arch/arm/util/cs-etm.c index 3bbc1e57d71d..ea891d12f8f4 100644 --- a/tools/perf/arch/arm/util/cs-etm.c +++ b/tools/perf/arch/arm/util/cs-etm.c @@ -643,7 +643,8 @@ static bool cs_etm_is_ete(struct perf_pmu *cs_etm_pmu, struct perf_cpu cpu) static __u64 cs_etm_get_legacy_trace_id(struct perf_cpu cpu) { - return CORESIGHT_LEGACY_CPU_TRACE_ID(cpu.cpu); + /* Wrap at 48 so that invalid trace IDs aren't saved into files. */ + return CORESIGHT_LEGACY_CPU_TRACE_ID(cpu.cpu % 48); } static void cs_etm_save_etmv4_header(__u64 data[], struct auxtrace_record *itr, struct perf_cpu cpu) |