Re: [SPLAT 1/3] arm_pmu: Sleeping spinlocks down armpmu_alloc_atomic()

Sebastian Andrzej Siewior
2021-08-10T13:54:59Z

On 2021-08-10 14:41:25 [+0100], Valentin Schneider wrote:
> [ 4.172817] BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:35

Would it work to allocate the memory upfront and invoke the HP callback
via smp_function_call()? That is implemented via the hp-callback. It is
invoked after all CPUs are up. There is one "memory allocation" per
"node". This does not change during runtime, right?

Sebastian