• Linus Torvalds's avatar
    Merge branch 'x86-spinlocks-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 816434ec
    Linus Torvalds authored
    Pull x86 spinlock changes from Ingo Molnar:
     "The biggest change here are paravirtualized ticket spinlocks (PV
      spinlocks), which bring a nice speedup on various benchmarks.
    
      The KVM host side will come to you via the KVM tree"
    
    * 'x86-spinlocks-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
      x86/kvm/guest: Fix sparse warning: "symbol 'klock_waiting' was not declared as static"
      kvm: Paravirtual ticketlocks support for linux guests running on KVM hypervisor
      kvm guest: Add configuration support to enable debug information for KVM Guests
      kvm uapi: Add KICK_CPU and PV_UNHALT definition to uapi
      xen, pvticketlock: Allow interrupts to be enabled while blocking
      x86, ticketlock: Add slowpath logic
      jump_label: Split jumplabel ratelimit
      x86, pvticketlock: When paravirtualizing ticket locks, increment by 2
      x86, pvticketlock: Use callee-save for lock_spinning
      xen, pvticketlocks: Add xen_nopvspin parameter to disable xen pv ticketlocks
      xen, pvticketlock: Xen implementation for PV ticket locks
      xen: Defer spinlock setup until boot CPU setup
      x86, ticketlock: Collapse a layer of functions
      x86, ticketlock: Don't inline _spin_unlock when using paravirt spinlocks
      x86, spinlock: Replace pv spinlocks with pv ticketlocks
    816434ec
smp.c 17 KB