diff options
| author | Suraj Das <surajdazz@gmail.com> | 2017-06-25 19:07:06 +0530 |
|---|---|---|
| committer | Suraj Das <surajdazz@gmail.com> | 2017-06-25 19:15:40 +0530 |
| commit | 6e033ebda94e620277a569625745cf21c749efdb (patch) | |
| tree | 641e80dabecde9fd9108b654bf43828d78632509 /kernel/events | |
| parent | fa097959467283e96988ba548a20ccb3ec27c0c1 (diff) | |
| parent | 262196005747d5e8b4106e92adae3749e8686240 (diff) | |
Merge branch 'cm-14.1' of https://github.com/LineageOS/android_kernel_oneplus_msm8974 into n7.1HEADn7.1
Diffstat (limited to 'kernel/events')
| -rw-r--r-- | kernel/events/core.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index f06d8db54db..70cdda89939 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -6143,7 +6143,6 @@ skip_type: __perf_event_init_context(&cpuctx->ctx); lockdep_set_class(&cpuctx->ctx.mutex, &cpuctx_mutex); lockdep_set_class(&cpuctx->ctx.lock, &cpuctx_lock); - cpuctx->ctx.type = cpu_context; cpuctx->ctx.pmu = pmu; cpuctx->jiffies_interval = 1; INIT_LIST_HEAD(&cpuctx->rotation_list); @@ -6783,7 +6782,19 @@ SYSCALL_DEFINE5(perf_event_open, * task or CPU context: */ if (move_group) { - if (group_leader->ctx->type != ctx->type) + /* + * Make sure we're both on the same task, or both + * per-cpu events. + */ + if (group_leader->ctx->task != ctx->task) + goto err_context; + + /* + * Make sure we're both events for the same CPU; + * grouping events for different CPUs is broken; since + * you can never concurrently schedule them anyhow. + */ + if (group_leader->cpu != event->cpu) goto err_context; } else { if (group_leader->ctx != ctx) |