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author | Dave Airlie | 2017-11-02 03:40:41 +0100 |
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committer | Dave Airlie | 2017-11-02 03:40:41 +0100 |
commit | 7a88cbd8d65d622c00bd76ba4ae1d893b292c91c (patch) | |
tree | 826df7ac42ca13c33828d0142046186b91df686b /kernel/events/core.c | |
parent | Merge tag 'drm-hisilicon-next-2017-11-01' of github.com:xin3liang/linux into ... (diff) | |
parent | Linux 4.14-rc7 (diff) | |
download | kernel-qcow2-linux-7a88cbd8d65d622c00bd76ba4ae1d893b292c91c.tar.gz kernel-qcow2-linux-7a88cbd8d65d622c00bd76ba4ae1d893b292c91c.tar.xz kernel-qcow2-linux-7a88cbd8d65d622c00bd76ba4ae1d893b292c91c.zip |
Backmerge tag 'v4.14-rc7' into drm-next
Linux 4.14-rc7
Requested by Ben Skeggs for nouveau to avoid major conflicts,
and things were getting a bit conflicty already, esp around amdgpu
reverts.
Diffstat (limited to 'kernel/events/core.c')
-rw-r--r-- | kernel/events/core.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 6bc21e202ae4..9d93db81fa36 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -662,7 +662,7 @@ static inline void update_cgrp_time_from_event(struct perf_event *event) /* * Do not update time when cgroup is not active */ - if (cgrp == event->cgrp) + if (cgroup_is_descendant(cgrp->css.cgroup, event->cgrp->css.cgroup)) __update_cgrp_time(event->cgrp); } @@ -8955,6 +8955,14 @@ static struct perf_cpu_context __percpu *find_pmu_context(int ctxn) static void free_pmu_context(struct pmu *pmu) { + /* + * Static contexts such as perf_sw_context have a global lifetime + * and may be shared between different PMUs. Avoid freeing them + * when a single PMU is going away. + */ + if (pmu->task_ctx_nr > perf_invalid_context) + return; + mutex_lock(&pmus_lock); free_percpu(pmu->pmu_cpu_context); mutex_unlock(&pmus_lock); |