[patch V4 09/41] x86/cpu: Move cpu_core_id into topology info

Thomas Gleixner
2023-08-14T08:54:44Z

Rename it to core_id and stick it to the other ID fields.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Juergen Gross <jgross@suse.com>
Tested-by: Sohil Mehta <sohil.mehta@intel.com>
Tested-by: Michael Kelley <mikelley@microsoft.com>

---
arch/x86/include/asm/processor.h | 4 +++-
arch/x86/include/asm/topology.h | 2 +-
arch/x86/kernel/amd_nb.c | 4 ++--
arch/x86/kernel/cpu/amd.c | 8 ++++----
arch/x86/kernel/cpu/common.c | 4 ++--
arch/x86/kernel/cpu/hygon.c | 4 ++--
arch/x86/kernel/cpu/proc.c | 2 +-
arch/x86/kernel/cpu/topology.c | 2 +-
arch/x86/kernel/smpboot.c | 6 +++---
9 files changed, 19 insertions(+), 17 deletions(-)

--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -88,6 +88,9 @@ struct cpuinfo_topology {

// Physical die ID on AMD, Relative on Intel
u32 die_id;
+
+ // Core ID relative to the package
+ u32 core_id;
};

struct cpuinfo_x86 {
@@ -142,7 +145,6 @@ struct cpuinfo_x86 {
/* Logical processor id: */
u16 logical_proc_id;
/* Core id: */
- u16 cpu_core_id;
u16 logical_die_id;
/* Index into per_cpu list: */
u16 cpu_index;
--- a/arch/x86/include/asm/topology.h
+++ b/arch/x86/include/asm/topology.h
@@ -109,7 +109,7 @@ extern const struct cpumask *cpu_cluster
#define topology_physical_package_id(cpu) (cpu_data(cpu).topo.pkg_id)
#define topology_logical_die_id(cpu) (cpu_data(cpu).logical_die_id)
#define topology_die_id(cpu) (cpu_data(cpu).topo.die_id)
-#define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id)
+#define topology_core_id(cpu) (cpu_data(cpu).topo.core_id)
#define topology_ppin(cpu) (cpu_data(cpu).ppin)

extern unsigned int __max_die_per_package;
--- a/arch/x86/kernel/amd_nb.c
+++ b/arch/x86/kernel/amd_nb.c
@@ -378,7 +378,7 @@ int amd_get_subcaches(int cpu)

pci_read_config_dword(link, 0x1d4, &mask);

- return (mask >> (4 * cpu_data(cpu).cpu_core_id)) & 0xf;
+ return (mask >> (4 * cpu_data(cpu).topo.core_id)) & 0xf;
}

int amd_set_subcaches(int cpu, unsigned long mask)
@@ -404,7 +404,7 @@ int amd_set_subcaches(int cpu, unsigned
pci_write_config_dword(nb->misc, 0x1b8, reg & ~0x180000);
}

- cuid = cpu_data(cpu).cpu_core_id;
+ cuid = cpu_data(cpu).topo.core_id;
mask <<= 4 * cuid;
mask |= (0xf ^ (1 << cuid)) << 26;

--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -373,7 +373,7 @@ static int nearby_node(int apicid)
#endif

/*
- * Fix up cpu_core_id for pre-F17h systems to be in the
+ * Fix up topo::core_id for pre-F17h systems to be in the
* [0 .. cores_per_node - 1] range. Not really needed but
* kept so as not to break existing setups.
*/
@@ -385,7 +385,7 @@ static void legacy_fixup_core_id(struct
return;

cus_per_node = c->x86_max_cores / nodes_per_socket;
- c->cpu_core_id %= cus_per_node;
+ c->topo.core_id %= cus_per_node;
}

/*
@@ -411,7 +411,7 @@ static void amd_get_topology(struct cpui
c->cu_id = ebx & 0xff;

if (c->x86 >= 0x17) {
- c->cpu_core_id = ebx & 0xff;
+ c->topo.core_id = ebx & 0xff;

if (smp_num_siblings > 1)
c->x86_max_cores /= smp_num_siblings;
@@ -454,7 +454,7 @@ static void amd_detect_cmp(struct cpuinf

bits = c->x86_coreid_bits;
/* Low order bits define the core id (index of core in socket) */
- c->cpu_core_id = c->topo.initial_apicid & ((1 << bits)-1);
+ c->topo.core_id = c->topo.initial_apicid & ((1 << bits)-1);
/* Convert the initial APIC ID into the socket ID */
c->topo.pkg_id = c->topo.initial_apicid >> bits;
/* use socket ID also for last level cache */
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -907,8 +907,8 @@ void detect_ht(struct cpuinfo_x86 *c)

core_bits = get_count_order(c->x86_max_cores);

- c->cpu_core_id = apic->phys_pkg_id(c->topo.initial_apicid, index_msb) &
- ((1 << core_bits) - 1);
+ c->topo.core_id = apic->phys_pkg_id(c->topo.initial_apicid, index_msb) &
+ ((1 << core_bits) - 1);
#endif
}

--- a/arch/x86/kernel/cpu/hygon.c
+++ b/arch/x86/kernel/cpu/hygon.c
@@ -74,7 +74,7 @@ static void hygon_get_topology(struct cp

c->topo.die_id = ecx & 0xff;

- c->cpu_core_id = ebx & 0xff;
+ c->topo.core_id = ebx & 0xff;

if (smp_num_siblings > 1)
c->x86_max_cores /= smp_num_siblings;
@@ -116,7 +116,7 @@ static void hygon_detect_cmp(struct cpui

bits = c->x86_coreid_bits;
/* Low order bits define the core id (index of core in socket) */
- c->cpu_core_id = c->topo.initial_apicid & ((1 << bits)-1);
+ c->topo.core_id = c->topo.initial_apicid & ((1 << bits)-1);
/* Convert the initial APIC ID into the socket ID */
c->topo.pkg_id = c->topo.initial_apicid >> bits;
/* use socket ID also for last level cache */
--- a/arch/x86/kernel/cpu/proc.c
+++ b/arch/x86/kernel/cpu/proc.c
@@ -21,7 +21,7 @@ static void show_cpuinfo_core(struct seq
seq_printf(m, "physical id\t: %d\n", c->topo.pkg_id);
seq_printf(m, "siblings\t: %d\n",
cpumask_weight(topology_core_cpumask(cpu)));
- seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id);
+ seq_printf(m, "core id\t\t: %d\n", c->topo.core_id);
seq_printf(m, "cpu cores\t: %d\n", c->booted_cores);
seq_printf(m, "apicid\t\t: %d\n", c->topo.apicid);
seq_printf(m, "initial apicid\t: %d\n", c->topo.initial_apicid);
--- a/arch/x86/kernel/cpu/topology.c
+++ b/arch/x86/kernel/cpu/topology.c
@@ -146,7 +146,7 @@ int detect_extended_topology(struct cpui
die_select_mask = (~(-1 << die_plus_mask_width)) >>
core_plus_mask_width;

- c->cpu_core_id = apic->phys_pkg_id(c->topo.initial_apicid,
+ c->topo.core_id = apic->phys_pkg_id(c->topo.initial_apicid,
ht_mask_width) & core_select_mask;

if (die_level_present) {
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -487,7 +487,7 @@ static bool match_smt(struct cpuinfo_x86
if (c->topo.pkg_id == o->topo.pkg_id &&
c->topo.die_id == o->topo.die_id &&
per_cpu(cpu_llc_id, cpu1) == per_cpu(cpu_llc_id, cpu2)) {
- if (c->cpu_core_id == o->cpu_core_id)
+ if (c->topo.core_id == o->topo.core_id)
return topology_sane(c, o, "smt");

if ((c->cu_id != 0xff) &&
@@ -498,7 +498,7 @@ static bool match_smt(struct cpuinfo_x86

} else if (c->topo.pkg_id == o->topo.pkg_id &&
c->topo.die_id == o->topo.die_id &&
- c->cpu_core_id == o->cpu_core_id) {
+ c->topo.core_id == o->topo.core_id) {
return topology_sane(c, o, "smt");
}

@@ -1439,7 +1439,7 @@ static void remove_siblinginfo(int cpu)
cpumask_clear(topology_sibling_cpumask(cpu));
cpumask_clear(topology_core_cpumask(cpu));
cpumask_clear(topology_die_cpumask(cpu));
- c->cpu_core_id = 0;
+ c->topo.core_id = 0;
c->booted_cores = 0;
cpumask_clear_cpu(cpu, cpu_sibling_setup_mask);
recompute_smt_state();