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Groups > linux.kernel > #1474633

[PATCH v2 3/8] x86, cpu: provide a function topology_num_packages to enumerate #packages

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From: Tim Chen <tim.c.chen@linux.intel.com>

We compute the the number of active packages during boot and
topology update.  Provide a function to export this info for
functions that need this topology info.

Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
 arch/x86/include/asm/topology.h | 1 +
 arch/x86/kernel/smpboot.c       | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h
index 98b669d..0bcf3b7 100644
--- a/arch/x86/include/asm/topology.h
+++ b/arch/x86/include/asm/topology.h
@@ -129,6 +129,7 @@ static inline int topology_max_smt_threads(void)
 }
 
 int topology_update_package_map(unsigned int apicid, unsigned int cpu);
+extern int topology_num_packages(void);
 extern int topology_phys_to_logical_pkg(unsigned int pkg);
 #else
 #define topology_max_packages()			(1)
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 3782bd4..292df31 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -297,6 +297,11 @@ found:
 	return 0;
 }
 
+int topology_num_packages(void)
+{
+	return logical_packages;
+}
+
 /**
  * topology_phys_to_logical_pkg - Map a physical package id to a logical
  *
-- 
2.7.4

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[PATCH v2 0/8] Support Intel® Turbo Boost Max Technology 3.0 Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2016-09-01 23:10 +0200
  [PATCH v2 4/8] sched, x86: use arch_update_cpu_topology to indicate x86 need sched domain rebuild Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2016-09-01 23:10 +0200
  [PATCH v2 6/8] acpi: bus: Enable HWP CPPC objects Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2016-09-01 23:20 +0200
  [PATCH v2 8/8] cpufreq: intel_pstate: Use CPPC to get max performance Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2016-09-01 23:20 +0200
  [PATCH v2 3/8] x86, cpu: provide a function topology_num_packages to enumerate #packages Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2016-09-01 23:20 +0200
  [PATCH v2 2/8] sched: Extend scheduler's asym packing Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2016-09-01 23:30 +0200
    Re: [PATCH v2 2/8] sched: Extend scheduler's asym packing Peter Zijlstra <peterz@infradead.org> - 2016-09-08 10:10 +0200
      Re: [PATCH v2 2/8] sched: Extend scheduler's asym packing Tim Chen <tim.c.chen@linux.intel.com> - 2016-09-08 20:10 +0200
        Re: [PATCH v2 2/8] sched: Extend scheduler's asym packing Peter Zijlstra <peterz@infradead.org> - 2016-09-08 20:30 +0200
  Re: [PATCH v2 0/8] Support Intel® Turbo Boost Max Technology 3.0 Peter Zijlstra <peterz@infradead.org> - 2016-09-08 10:10 +0200

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