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[patch 06/11] x86/topology: Provide helper to retrieve number of cpu packages

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For services which are per package, e.g. intel_uncore, we need to know the
number of possible packages in the system. Provide a helper. Unfortunately a
macro to avoid inclue hell.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 arch/x86/include/asm/topology.h |    3 +++
 1 file changed, 3 insertions(+)

--- a/arch/x86/include/asm/topology.h
+++ b/arch/x86/include/asm/topology.h
@@ -127,6 +127,9 @@ extern const struct cpumask *cpu_coregro
 #define topology_sibling_cpumask(cpu)		(per_cpu(cpu_sibling_map, cpu))
 #endif
 
+#define topology_max_packages()			\
+	DIV_ROUND_UP(num_possible_cpus(), boot_cpu_data.x86_max_cores * smp_num_siblings)
+
 static inline void arch_fix_phys_package_id(int num, u32 slot)
 {
 }

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[patch 00/11] x86/perf/intel_uncore: Cleanup and enhancements Thomas Gleixner <tglx@linutronix.de> - 2016-02-17 14:50 +0100
  [patch 05/11] x86/perf/intel_uncore: Make code readable Thomas Gleixner <tglx@linutronix.de> - 2016-02-17 15:00 +0100
  [patch 01/11] x86/perf/intel_uncore: Remove pointless mask check Thomas Gleixner <tglx@linutronix.de> - 2016-02-17 15:00 +0100
  [patch 02/11] x86/perf/intel_uncore: Simplify error rollback Thomas Gleixner <tglx@linutronix.de> - 2016-02-17 15:00 +0100
  [patch 09/11] x86/perf/intel_uncore: Make PCI and MSR uncore  independent Thomas Gleixner <tglx@linutronix.de> - 2016-02-17 15:00 +0100
  [patch 06/11] x86/topology: Provide helper to retrieve number of cpu  packages Thomas Gleixner <tglx@linutronix.de> - 2016-02-17 15:00 +0100
  [patch 03/11] x86/perf/intel_uncore: Fix error handling Thomas Gleixner <tglx@linutronix.de> - 2016-02-17 15:00 +0100
  [patch 11/11] x86/perf/intel_uncore: Make it modular Thomas Gleixner <tglx@linutronix.de> - 2016-02-17 15:00 +0100
  [patch 10/11] cpumask: Export cpumask_any_but Thomas Gleixner <tglx@linutronix.de> - 2016-02-17 15:00 +0100
  [patch 04/11] x86/perf/intel_uncore: Cleanup hardware on exit Thomas Gleixner <tglx@linutronix.de> - 2016-02-17 15:00 +0100
    RE: [patch 04/11] x86/perf/intel_uncore: Cleanup hardware on exit "Liang, Kan" <kan.liang@intel.com> - 2016-02-17 16:50 +0100
      RE: [patch 04/11] x86/perf/intel_uncore: Cleanup hardware on exit Thomas Gleixner <tglx@linutronix.de> - 2016-02-17 19:20 +0100
        RE: [patch 04/11] x86/perf/intel_uncore: Cleanup hardware on exit "Liang, Kan" <kan.liang@intel.com> - 2016-02-17 23:00 +0100
          RE: [patch 04/11] x86/perf/intel_uncore: Cleanup hardware on exit Thomas Gleixner <tglx@linutronix.de> - 2016-02-17 23:10 +0100

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