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Message-Id: <270dd0e65f746e97669d9c3b89dfc56e5523e026.1550545163.git.len.brown@intel.com> Date: Mon, 18 Feb 2019 22:40:08 -0500 From: Len Brown <lenb@...nel.org> To: x86@...nel.org Cc: linux-kernel@...r.kernel.org, Len Brown <len.brown@...el.com> Subject: [PATCH 06/11] x86 topology: define topology_unique_die_id() From: Len Brown <len.brown@...el.com> The topology_unique_die_id() helper calculates a unique system-wide die-id, for the benefit of multi-die per-package systems. This simple system-wide unique number within known bounds is sufficient. No need for the overhead of generating a global consecutive "logical" id. Signed-off-by: Len Brown <len.brown@...el.com> --- arch/x86/include/asm/topology.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h index a52a572147ba..12444a1a30f3 100644 --- a/arch/x86/include/asm/topology.h +++ b/arch/x86/include/asm/topology.h @@ -106,6 +106,9 @@ extern const struct cpumask *cpu_coregroup_mask(int cpu); #define topology_logical_package_id(cpu) (cpu_data(cpu).logical_proc_id) #define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id) +#define topology_unique_die_id(cpu) ((cpu_data(cpu).logical_proc_id * \ + cpu_data(cpu).x86_max_dies) + \ + cpu_data(cpu).cpu_die_id) #define topology_die_id(cpu) (cpu_data(cpu).cpu_die_id) #define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id) -- 2.18.0-rc0
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