diff options
| author | Rygebin <kaankulahli@gmail.com> | 2017-06-20 14:29:27 +0000 |
|---|---|---|
| committer | Rygebin <kaankulahli@gmail.com> | 2017-06-20 14:29:27 +0000 |
| commit | afa9ad70f02491fbe10df2203f8f2fa42f956228 (patch) | |
| tree | b6dce4ed04f62fd443721a94ac3e7f81427e0ad1 /kernel/events | |
| parent | 582eb92a1e8bf6c0e743774c1fb550e630715433 (diff) | |
| parent | 08d1ec9238c605a9a5cf1229fd60961efcd21ff1 (diff) | |
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 ebaf962af46..1bedd73b0c6 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -6520,7 +6520,6 @@ 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); @@ -7150,7 +7149,19 @@ 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) |