diff options
| author | Len Brown <len.brown@intel.com> | 2019-05-13 13:58:46 -0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-05-23 10:08:30 +0200 |
| commit | 14d96d6c06b5d8116b8d52c9c5530f5528ef1e61 (patch) | |
| tree | 0cb747fc84cfc5431fd6e3b1f8c5f358148a8057 /arch/x86/kernel/cpu/topology.c | |
| parent | 7745f03eb39587dd15a1fb26e6223678b8e906d2 (diff) | |
| download | linux-14d96d6c06b5d8116b8d52c9c5530f5528ef1e61.tar.bz2 | |
x86/topology: Create topology_max_die_per_package()
topology_max_packages() is available to size resources to cover all
packages in the system.
But now multi-die/package systems are coming up, and some resources are
per-die.
Create topology_max_die_per_package(), for detecting multi-die/package
systems, and sizing any per-die resources.
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/e6eaf384571ae52ac7d0ca41510b7fb7d2fda0e4.1557769318.git.len.brown@intel.com
Diffstat (limited to 'arch/x86/kernel/cpu/topology.c')
| -rw-r--r-- | arch/x86/kernel/cpu/topology.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/topology.c b/arch/x86/kernel/cpu/topology.c index 4d17e699657d..ee48c3fc8a65 100644 --- a/arch/x86/kernel/cpu/topology.c +++ b/arch/x86/kernel/cpu/topology.c @@ -26,6 +26,9 @@ #define LEVEL_MAX_SIBLINGS(ebx) ((ebx) & 0xffff) #ifdef CONFIG_SMP +unsigned int __max_die_per_package __read_mostly = 1; +EXPORT_SYMBOL(__max_die_per_package); + /* * Check if given CPUID extended toplogy "leaf" is implemented */ @@ -146,7 +149,7 @@ int detect_extended_topology(struct cpuinfo_x86 *c) c->apicid = apic->phys_pkg_id(c->initial_apicid, 0); c->x86_max_cores = (core_level_siblings / smp_num_siblings); - c->x86_max_dies = (die_level_siblings / core_level_siblings); + __max_die_per_package = (die_level_siblings / core_level_siblings); #endif return 0; } |