[tip: x86/core] x86/cpu: Move cpu_core_id into topology info

From: tip-bot2 for Thomas Gleixner
Date: Fri Oct 13 2023 - 05:39:04 EST

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The following commit has been merged into the x86/core branch of tip:

Commit-ID: e95256335d45cc965cd12c423535002974313340
Gitweb: https://git.kernel.org/tip/e95256335d45cc965cd12c423535002974313340
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Mon, 14 Aug 2023 10:18:34 +02:00
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitterDate: Tue, 10 Oct 2023 14:38:17 +02:00

x86/cpu: Move cpu_core_id into topology info

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

No functional change.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Tested-by: Juergen Gross <jgross@xxxxxxxx>
Tested-by: Sohil Mehta <sohil.mehta@xxxxxxxxx>
Tested-by: Michael Kelley <mikelley@xxxxxxxxxxxxx>
Tested-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Tested-by: Zhang Rui <rui.zhang@xxxxxxxxx>
Acked-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230814085112.566519388@xxxxxxxxxxxxx

---
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(-)

diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 662e973..a637602 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -89,6 +89,9 @@ 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 {
@@ -143,7 +146,6 @@ 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;
diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h
index cf43b51..7fa567c 100644
--- a/arch/x86/include/asm/topology.h
+++ b/arch/x86/include/asm/topology.h
@@ -109,7 +109,7 @@ extern const struct cpumask *cpu_clustergroup_mask(int cpu);
#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;
diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c
index 356de95..75df3c8 100644
--- a/arch/x86/kernel/amd_nb.c
+++ b/arch/x86/kernel/amd_nb.c
@@ -386,7 +386,7 @@ 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)
@@ -412,7 +412,7 @@ int amd_set_subcaches(int cpu, unsigned long mask)
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;

diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index c10f5f7..66bb929 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -378,7 +378,7 @@ 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.
*/
@@ -390,7 +390,7 @@ static void legacy_fixup_core_id(struct cpuinfo_x86 *c)
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;
}

/*
@@ -416,7 +416,7 @@ static void amd_get_topology(struct cpuinfo_x86 *c)
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;
@@ -459,7 +459,7 @@ static void amd_detect_cmp(struct cpuinfo_x86 *c)

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 */
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 8f60d55..4147665 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -922,8 +922,8 @@ 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
}

diff --git a/arch/x86/kernel/cpu/hygon.c b/arch/x86/kernel/cpu/hygon.c
index 9190be4..f3898b5 100644
--- a/arch/x86/kernel/cpu/hygon.c
+++ b/arch/x86/kernel/cpu/hygon.c
@@ -74,7 +74,7 @@ static void hygon_get_topology(struct cpuinfo_x86 *c)

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;
@@ -120,7 +120,7 @@ static void hygon_detect_cmp(struct cpuinfo_x86 *c)

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 */
diff --git a/arch/x86/kernel/cpu/proc.c b/arch/x86/kernel/cpu/proc.c
index 366af2e..e65fae6 100644
--- a/arch/x86/kernel/cpu/proc.c
+++ b/arch/x86/kernel/cpu/proc.c
@@ -23,7 +23,7 @@ static void show_cpuinfo_core(struct seq_file *m, struct cpuinfo_x86 *c,
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);
diff --git a/arch/x86/kernel/cpu/topology.c b/arch/x86/kernel/cpu/topology.c
index 3b48bc3..dc13670 100644
--- a/arch/x86/kernel/cpu/topology.c
+++ b/arch/x86/kernel/cpu/topology.c
@@ -146,7 +146,7 @@ int detect_extended_topology(struct cpuinfo_x86 *c)
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) {
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 8df0296..7ab9224 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -479,7 +479,7 @@ static bool match_smt(struct cpuinfo_x86 *c, struct cpuinfo_x86 *o)
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) &&
@@ -490,7 +490,7 @@ static bool match_smt(struct cpuinfo_x86 *c, struct cpuinfo_x86 *o)

} 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");
}

@@ -1426,7 +1426,7 @@ 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();

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