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| author | Yeoreum Yun <[email protected]> | 2025-03-06 12:11:10 +0000 |
|---|---|---|
| committer | Suzuki K Poulose <[email protected]> | 2025-03-10 10:40:26 +0000 |
| commit | d11eb31db26912e6e3882a2d253e5a79374c412e (patch) | |
| tree | 44e77260354e9228c49af1a63f75bc9cb2ae51ec /drivers/pci/controller/dwc/pcie-qcom-common.c | |
| parent | coresight-tmc: change tmc_drvdata spinlock's type to raw_spinlock_t (diff) | |
| download | kernel-d11eb31db26912e6e3882a2d253e5a79374c412e.tar.gz kernel-d11eb31db26912e6e3882a2d253e5a79374c412e.zip | |
coresight/ultrasoc: change smb_drv_data spinlock's type to raw_spinlock_t
In ultrasoc-smb drivers, smb_drv_data->spinlock can be held
during __schedule() by perf_event_task_sched_out()/in().
Since smb__drv_data->spinlock type is spinlock_t and
perf_event_task_sched_out()/in() is called after acquiring rq_lock,
which is raw_spinlock_t (an unsleepable lock),
this poses an issue in PREEMPT_RT kernel where spinlock_t is sleepable.
To address this, change type smb_drv_data->spinlock in ultrasoc-smb drivers,
which can be called by perf_event_task_sched_out()/in(),
from spinlock_t to raw_spinlock_t.
Reviewed-by: James Clark <[email protected]>
Signed-off-by: Yeoreum Yun <[email protected]>
Signed-off-by: Suzuki K Poulose <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'drivers/pci/controller/dwc/pcie-qcom-common.c')
0 files changed, 0 insertions, 0 deletions
