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

tip-bot2 for Thomas Gleixner
2023-10-13T09:39:09Z

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

Commit-ID: 8a169ed40fcf6e0e7a2d900c7ab4408649488f40
Gitweb: https://git.kernel.org/tip/8a169ed40fcf6e0e7a2d900c7ab4408649488f40
Author: Thomas Gleixner <tglx@linutronix.de>
AuthorDate: Mon, 14 Aug 2023 10:18:31 +02:00
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitterDate: Tue, 10 Oct 2023 14:38:17 +02:00

x86/cpu: Move cpu_die_id into topology info

Move the next member.

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>
Tested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230814085112.388185134@linutronix.de

---
Documentation/arch/x86/topology.rst | 4 ++--
arch/x86/include/asm/processor.h | 4 +++-
arch/x86/include/asm/topology.h | 2 +-
arch/x86/kernel/cpu/amd.c | 8 ++++----
arch/x86/kernel/cpu/cacheinfo.c | 2 +-
arch/x86/kernel/cpu/common.c | 2 +-
arch/x86/kernel/cpu/hygon.c | 8 ++++----
arch/x86/kernel/cpu/topology.c | 2 +-
arch/x86/kernel/smpboot.c | 10 +++++-----
9 files changed, 22 insertions(+), 20 deletions(-)

diff --git a/Documentation/arch/x86/topology.rst b/Documentation/arch/x86/topology.rst
index 0bfa1ed..ff36e52 100644
--- a/Documentation/arch/x86/topology.rst
+++ b/Documentation/arch/x86/topology.rst
@@ -55,7 +55,7 @@ Package-related topology information in the kernel:

The number of dies in a package. This information is retrieved via CPUID.

- - cpuinfo_x86.cpu_die_id:
+ - cpuinfo_x86.topo.die_id:

The physical ID of the die. This information is retrieved via CPUID.

@@ -65,7 +65,7 @@ Package-related topology information in the kernel:
and deduced from the APIC IDs of the cores in the package.

Modern systems use this value for the socket. There may be multiple
- packages within a socket. This value may differ from cpu_die_id.
+ packages within a socket. This value may differ from topo.die_id.

- cpuinfo_x86.logical_proc_id:

diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index a673199..662e973 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -86,6 +86,9 @@ struct cpuinfo_topology {

// Physical package ID
u32 pkg_id;
+
+ // Physical die ID on AMD, Relative on Intel
+ u32 die_id;
};

struct cpuinfo_x86 {
@@ -141,7 +144,6 @@ struct cpuinfo_x86 {
u16 logical_proc_id;
/* Core id: */
u16 cpu_core_id;
- u16 cpu_die_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 666c82e..cf43b51 100644
--- a/arch/x86/include/asm/topology.h
+++ b/arch/x86/include/asm/topology.h
@@ -108,7 +108,7 @@ extern const struct cpumask *cpu_clustergroup_mask(int cpu);
#define topology_logical_package_id(cpu) (cpu_data(cpu).logical_proc_id)
#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).cpu_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_ppin(cpu) (cpu_data(cpu).ppin)

diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index d23463f..c10f5f7 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -410,7 +410,7 @@ static void amd_get_topology(struct cpuinfo_x86 *c)

cpuid(0x8000001e, &eax, &ebx, &ecx, &edx);

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

if (c->x86 == 0x15)
c->cu_id = ebx & 0xff;
@@ -436,9 +436,9 @@ static void amd_get_topology(struct cpuinfo_x86 *c)
u64 value;

rdmsrl(MSR_FAM10H_NODE_ID, value);
- c->cpu_die_id = value & 7;
+ c->topo.die_id = value & 7;

- per_cpu(cpu_llc_id, cpu) = c->cpu_die_id;
+ per_cpu(cpu_llc_id, cpu) = c->topo.die_id;
} else
return;

@@ -463,7 +463,7 @@ static void amd_detect_cmp(struct cpuinfo_x86 *c)
/* 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 */
- per_cpu(cpu_llc_id, cpu) = c->cpu_die_id = c->topo.pkg_id;
+ per_cpu(cpu_llc_id, cpu) = c->topo.die_id = c->topo.pkg_id;
}

u32 amd_get_nodes_per_socket(void)
diff --git a/arch/x86/kernel/cpu/cacheinfo.c b/arch/x86/kernel/cpu/cacheinfo.c
index fe583fd..e253687 100644
--- a/arch/x86/kernel/cpu/cacheinfo.c
+++ b/arch/x86/kernel/cpu/cacheinfo.c
@@ -672,7 +672,7 @@ void cacheinfo_amd_init_llc_id(struct cpuinfo_x86 *c, int cpu)

if (c->x86 < 0x17) {
/* LLC is at the node level. */
- per_cpu(cpu_llc_id, cpu) = c->cpu_die_id;
+ per_cpu(cpu_llc_id, cpu) = c->topo.die_id;
} else if (c->x86 == 0x17 && c->x86_model <= 0x1F) {
/*
* LLC is at the core complex level.
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 77fc124..8f60d55 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -1808,7 +1808,7 @@ static void validate_apic_and_package_id(struct cpuinfo_x86 *c)
cpu, apicid, c->topo.initial_apicid);
}
BUG_ON(topology_update_package_map(c->topo.pkg_id, cpu));
- BUG_ON(topology_update_die_map(c->cpu_die_id, cpu));
+ BUG_ON(topology_update_die_map(c->topo.die_id, cpu));
#else
c->logical_proc_id = 0;
#endif
diff --git a/arch/x86/kernel/cpu/hygon.c b/arch/x86/kernel/cpu/hygon.c
index 5349735..9190be4 100644
--- a/arch/x86/kernel/cpu/hygon.c
+++ b/arch/x86/kernel/cpu/hygon.c
@@ -72,7 +72,7 @@ static void hygon_get_topology(struct cpuinfo_x86 *c)

cpuid(0x8000001e, &eax, &ebx, &ecx, &edx);

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

c->cpu_core_id = ebx & 0xff;

@@ -99,9 +99,9 @@ static void hygon_get_topology(struct cpuinfo_x86 *c)
u64 value;

rdmsrl(MSR_FAM10H_NODE_ID, value);
- c->cpu_die_id = value & 7;
+ c->topo.die_id = value & 7;

- per_cpu(cpu_llc_id, cpu) = c->cpu_die_id;
+ per_cpu(cpu_llc_id, cpu) = c->topo.die_id;
} else
return;

@@ -124,7 +124,7 @@ static void hygon_detect_cmp(struct cpuinfo_x86 *c)
/* 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 */
- per_cpu(cpu_llc_id, cpu) = c->cpu_die_id = c->topo.pkg_id;
+ per_cpu(cpu_llc_id, cpu) = c->topo.die_id = c->topo.pkg_id;
}

static void srat_detect_node(struct cpuinfo_x86 *c)
diff --git a/arch/x86/kernel/cpu/topology.c b/arch/x86/kernel/cpu/topology.c
index 0da4755..3b48bc3 100644
--- a/arch/x86/kernel/cpu/topology.c
+++ b/arch/x86/kernel/cpu/topology.c
@@ -150,7 +150,7 @@ int detect_extended_topology(struct cpuinfo_x86 *c)
ht_mask_width) & core_select_mask;

if (die_level_present) {
- c->cpu_die_id = apic->phys_pkg_id(c->topo.initial_apicid,
+ c->topo.die_id = apic->phys_pkg_id(c->topo.initial_apicid,
core_plus_mask_width) & die_select_mask;
}

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index c5f4abb..8df0296 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -360,7 +360,7 @@ static int topology_phys_to_logical_die(unsigned int die_id, unsigned int cur_cp
for_each_possible_cpu(cpu) {
struct cpuinfo_x86 *c = &cpu_data(cpu);

- if (c->initialized && c->cpu_die_id == die_id &&
+ if (c->initialized && c->topo.die_id == die_id &&
c->topo.pkg_id == proc_id)
return c->logical_die_id;
}
@@ -422,7 +422,7 @@ static void __init smp_store_boot_cpu_info(void)
*c = boot_cpu_data;
c->cpu_index = id;
topology_update_package_map(c->topo.pkg_id, id);
- topology_update_die_map(c->cpu_die_id, id);
+ topology_update_die_map(c->topo.die_id, id);
c->initialized = true;
}

@@ -477,7 +477,7 @@ static bool match_smt(struct cpuinfo_x86 *c, struct cpuinfo_x86 *o)
int cpu1 = c->cpu_index, cpu2 = o->cpu_index;

if (c->topo.pkg_id == o->topo.pkg_id &&
- c->cpu_die_id == o->cpu_die_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)
return topology_sane(c, o, "smt");
@@ -489,7 +489,7 @@ static bool match_smt(struct cpuinfo_x86 *c, struct cpuinfo_x86 *o)
}

} else if (c->topo.pkg_id == o->topo.pkg_id &&
- c->cpu_die_id == o->cpu_die_id &&
+ c->topo.die_id == o->topo.die_id &&
c->cpu_core_id == o->cpu_core_id) {
return topology_sane(c, o, "smt");
}
@@ -500,7 +500,7 @@ static bool match_smt(struct cpuinfo_x86 *c, struct cpuinfo_x86 *o)
static bool match_die(struct cpuinfo_x86 *c, struct cpuinfo_x86 *o)
{
if (c->topo.pkg_id == o->topo.pkg_id &&
- c->cpu_die_id == o->cpu_die_id)
+ c->topo.die_id == o->topo.die_id)
return true;
return false;
}