x86/intel_rdt: Call intel_rdt_sched_in() with preemption disabled
intel_rdt_sched_in() must be called with preemption disabled because the function accesses percpu variables (pqr_state and closid). If a task moves itself via move_myself() preemption is enabled, which violates the calling convention and can result in incorrect closid selection when the task gets preempted or migrated. Add the required protection and a comment about the calling convention. Signed-off-by: NFenghua Yu <fenghua.yu@intel.com> Cc: "Ravi V Shankar" <ravi.v.shankar@intel.com> Cc: "Tony Luck" <tony.luck@intel.com> Cc: "Marcelo Tosatti" <mtosatti@redhat.com> Cc: "Sai Prakhya" <sai.praneeth.prakhya@intel.com> Cc: "Vikas Shivappa" <vikas.shivappa@linux.intel.com> Cc: "H. Peter Anvin" <h.peter.anvin@intel.com> Link: http://lkml.kernel.org/r/1480625714-54246-1-git-send-email-fenghua.yu@intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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