diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2024-02-13 22:06:14 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-02-15 22:07:45 +0100 |
| commit | fd43b8ae76e903c76f14d06eb939449bcc3f614f (patch) | |
| tree | 512c9bfce5133df3cc07fb4a77cdfd012e0ee93a /arch/x86/kernel/cpu/topology.c | |
| parent | bd745d1c41e7fa56242889eb5dc6df2d7dd5df32 (diff) | |
x86/cpu/topology: Provide __num_[cores|threads]_per_package
Expose properly accounted information and accessors so the fiddling with
other topology variables can be replaced.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mhklinux@outlook.com>
Tested-by: Sohil Mehta <sohil.mehta@intel.com>
Link: https://lore.kernel.org/r/20240213210253.120958987@linutronix.de
Diffstat (limited to 'arch/x86/kernel/cpu/topology.c')
| -rw-r--r-- | arch/x86/kernel/cpu/topology.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/topology.c b/arch/x86/kernel/cpu/topology.c index b078facce865..41dd8e0eb511 100644 --- a/arch/x86/kernel/cpu/topology.c +++ b/arch/x86/kernel/cpu/topology.c @@ -392,7 +392,7 @@ void __init topology_init_possible_cpus(void) unsigned int disabled = topo_info.nr_disabled_cpus; unsigned int cnta, cntb, cpu, allowed = 1; unsigned int total = assigned + disabled; - u32 apicid; + u32 apicid, firstid; if (!restrict_to_up()) { if (WARN_ON_ONCE(assigned > nr_cpu_ids)) { @@ -432,6 +432,12 @@ void __init topology_init_possible_cpus(void) __max_threads_per_core = DIV_ROUND_UP(cntb, cnta); pr_info("Max. threads per core: %3u\n", __max_threads_per_core); + firstid = find_first_bit(apic_maps[TOPO_SMT_DOMAIN].map, MAX_LOCAL_APIC); + __num_cores_per_package = topology_unit_count(firstid, TOPO_CORE_DOMAIN, TOPO_PKG_DOMAIN); + pr_info("Num. cores per package: %3u\n", __num_cores_per_package); + __num_threads_per_package = topology_unit_count(firstid, TOPO_SMT_DOMAIN, TOPO_PKG_DOMAIN); + pr_info("Num. threads per package: %3u\n", __num_threads_per_package); + pr_info("Allowing %u present CPUs plus %u hotplug CPUs\n", assigned, disabled); if (topo_info.nr_rejected_cpus) pr_info("Rejected CPUs %u\n", topo_info.nr_rejected_cpus); |