diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/events/core.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 501d8c2fedff..07cd2dbab0e8 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -4957,7 +4957,7 @@ static struct perf_event_pmu_context * find_get_pmu_context(struct pmu *pmu, struct perf_event_context *ctx, struct perf_event *event) { - struct perf_event_pmu_context *new = NULL, *epc; + struct perf_event_pmu_context *new = NULL, *pos = NULL, *epc; void *task_ctx_data = NULL; if (!ctx->task) { @@ -5014,12 +5014,19 @@ find_get_pmu_context(struct pmu *pmu, struct perf_event_context *ctx, atomic_inc(&epc->refcount); goto found_epc; } + /* Make sure the pmu_ctx_list is sorted by PMU type: */ + if (!pos && epc->pmu->type > pmu->type) + pos = epc; } epc = new; new = NULL; - list_add(&epc->pmu_ctx_entry, &ctx->pmu_ctx_list); + if (!pos) + list_add_tail(&epc->pmu_ctx_entry, &ctx->pmu_ctx_list); + else + list_add(&epc->pmu_ctx_entry, pos->pmu_ctx_entry.prev); + epc->ctx = ctx; found_epc: |