On Sat 2022-02-12 18:43:47, Lecopzer Chen wrote: > From: Pingfan Liu <kernelfans@xxxxxxxxx> > > from: Pingfan Liu <kernelfans@xxxxxxxxx> > > hardlockup_detector_event_create() should create perf_event on the > current CPU. Preemption could not get disabled because > perf_event_create_kernel_counter() allocates memory. Instead, > the CPU locality is achieved by processing the code in a per-CPU > bound kthread. > > Add a check to prevent mistakes when calling the code in another > code path. > > Signed-off-by: Pingfan Liu <kernelfans@xxxxxxxxx> > Co-developed-by: Lecopzer Chen <lecopzer.chen@xxxxxxxxxxxx> > Signed-off-by: Lecopzer Chen <lecopzer.chen@xxxxxxxxxxxx> Reviewed-by: Petr Mladek <pmladek@xxxxxxxx> Best Regards, Petr
