9b23e3845b
Calling pmc_hook inside a critical section may result in a panic. This happens when the user callchain is fetched, because it uses pmap_map_user_ptr, that tries to get the (sleepable) pmap lock when the needed vsid is not found. Judging by the implementation in other platforms, intr_irq_handler in kern/subr_intr.c and what pmc_hook do, it seems safe to move pmc_hook outside the critical section. Sponsored by: Eldorado Research Institute (eldorado.org.br) Differential Revision: https://reviews.freebsd.org/D26111 |
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