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authorIngo Molnar <mingo@elte.hu>2011-02-16 09:45:33 +0100
committerIngo Molnar <mingo@elte.hu>2011-02-16 09:45:47 +0100
commit275a88d3cf0e2f08a98dc5ce9494af0cb6ed2092 (patch)
tree785ce29ec09904fbde73c63e3aeadaf6537752a5 /arch/x86/kernel/cpu/amd.c
parent52b8b8d7251f8f7b8ed4a6c623618106d83e18b5 (diff)
parent9e81509efc4fefcdd75cc6a4121672fa71ae8745 (diff)
Merge branch 'x86/amd-nb' into x86/mm
Merge reason: consolidate it into the more generic x86/mm tree to prevent conflicts with ongoing NUMA work. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/cpu/amd.c')
-rw-r--r--arch/x86/kernel/cpu/amd.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 77858fd6462..f771ab6b49e 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -265,7 +265,7 @@ static int __cpuinit nearby_node(int apicid)
#ifdef CONFIG_X86_HT
static void __cpuinit amd_get_topology(struct cpuinfo_x86 *c)
{
- u32 nodes;
+ u32 nodes, cores_per_cu = 1;
u8 node_id;
int cpu = smp_processor_id();
@@ -280,6 +280,7 @@ static void __cpuinit amd_get_topology(struct cpuinfo_x86 *c)
/* get compute unit information */
smp_num_siblings = ((ebx >> 8) & 3) + 1;
c->compute_unit_id = ebx & 0xff;
+ cores_per_cu += ((ebx >> 8) & 3);
} else if (cpu_has(c, X86_FEATURE_NODEID_MSR)) {
u64 value;
@@ -292,15 +293,18 @@ static void __cpuinit amd_get_topology(struct cpuinfo_x86 *c)
/* fixup multi-node processor information */
if (nodes > 1) {
u32 cores_per_node;
+ u32 cus_per_node;
set_cpu_cap(c, X86_FEATURE_AMD_DCM);
cores_per_node = c->x86_max_cores / nodes;
+ cus_per_node = cores_per_node / cores_per_cu;
/* store NodeID, use llc_shared_map to store sibling info */
per_cpu(cpu_llc_id, cpu) = node_id;
- /* core id to be in range from 0 to (cores_per_node - 1) */
- c->cpu_core_id = c->cpu_core_id % cores_per_node;
+ /* core id has to be in the [0 .. cores_per_node - 1] range */
+ c->cpu_core_id %= cores_per_node;
+ c->compute_unit_id %= cus_per_node;
}
}
#endif