diff options
Diffstat (limited to 'kernel/events')
| -rw-r--r-- | kernel/events/core.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 63be65437e9e..fc0290f25482 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -8443,7 +8443,13 @@ skip_type: if (pmu->task_ctx_nr == perf_hw_context) { static int hw_context_taken = 0; - if (WARN_ON_ONCE(hw_context_taken)) + /* + * Other than systems with heterogeneous CPUs, it never makes + * sense for two PMUs to share perf_hw_context. PMUs which are + * uncore must use perf_invalid_context. + */ + if (WARN_ON_ONCE(hw_context_taken && + !(pmu->capabilities & PERF_PMU_CAP_HETEROGENEOUS_CPUS))) pmu->task_ctx_nr = perf_invalid_context; hw_context_taken = 1; |