On Fri, Sep 02, 2016 at 04:53:47PM +0200, Paolo Bonzini wrote: > > > On 02/09/2016 16:03, Frederic Weisbecker wrote: > > The callers of the functions performing irqtime kcpustat updates have > > IRQS disabled, no need to disable them again. > > They do, but perhaps this should be annotated through some sparse magic. > It's starting to be hairy, with the requirement spanning many separate > files.
Sparse sucks for those things... maybe just add something like lockdep_assert_irqsoff(). Such a call both documents the requirement and validates at runtime when CONFIG_LOCKDEP.
