Hi! > From: Marco Elver <el...@google.com> > > [ Upstream commit f95e5a3d59011eec1257d0e76de1e1f8969d426f ] > > Internal data structures (cpu_bps, task_bps) of powerpc's hw_breakpoint > implementation have relied on nr_bp_mutex serializing access to them. > > Before overhauling synchronization of kernel/events/hw_breakpoint.c, > introduce 2 spinlocks to synchronize cpu_bps and task_bps respectively, > thus avoiding reliance on callers synchronizing powerpc's > hw_breakpoint.
This is preparation, not a bugfix, not sure why it was picked for
5.10.
Best regards,
Pavel
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