Messages in this thread | | | Date | Tue, 18 Oct 2022 11:35:09 +0200 | From | Pavel Machek <> | Subject | Re: [PATCH AUTOSEL 5.10 04/16] powerpc/hw_breakpoint: Avoid relying on caller synchronization |
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Hi!
> From: Marco Elver <elver@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 -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany [unhandled content-type:application/pgp-signature] | |