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authorLinus Torvalds <torvalds@linux-foundation.org>2016-04-03 14:32:28 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-04-03 14:32:28 +0300
commit30cebb6ca1e0eb2691339a0caa6600f646af0be5 (patch)
tree9c132c7079b0cb48b19fa81231b679ddba766621 /arch/x86/kernel/cpu
parentf7eeb8a87c033d126ff6b8c35405ba5dc4e55754 (diff)
parent34a4cceb78e48c75d1b48b25352a3f3b2cc2b2da (diff)
downloadlinux-30cebb6ca1e0eb2691339a0caa6600f646af0be5.tar.xz
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner: "This lot contains: - Some fixups for the fallout of the topology consolidation which unearthed AMD/Intel inconsistencies - Documentation for the x86 topology management - Support for AMD advanced power management bits - Two simple cleanups removing duplicated code" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu: Add advanced power management bits x86/thread_info: Merge two !__ASSEMBLY__ sections x86/cpufreq: Remove duplicated TDP MSR macro definitions x86/Documentation: Start documenting x86 topology x86/cpu: Get rid of compute_unit_id perf/x86/amd: Cleanup Fam10h NB event constraints x86/topology: Fix AMD core count
Diffstat (limited to 'arch/x86/kernel/cpu')
-rw-r--r--arch/x86/kernel/cpu/amd.c12
-rw-r--r--arch/x86/kernel/cpu/powerflags.c2
2 files changed, 6 insertions, 8 deletions
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 6e47e3a916f1..7b76eb67a9b3 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -300,7 +300,6 @@ static int nearby_node(int apicid)
#ifdef CONFIG_SMP
static void amd_get_topology(struct cpuinfo_x86 *c)
{
- u32 cores_per_cu = 1;
u8 node_id;
int cpu = smp_processor_id();
@@ -313,8 +312,8 @@ static void 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);
+ c->x86_max_cores /= smp_num_siblings;
+ c->cpu_core_id = ebx & 0xff;
} else if (cpu_has(c, X86_FEATURE_NODEID_MSR)) {
u64 value;
@@ -325,19 +324,16 @@ static void amd_get_topology(struct cpuinfo_x86 *c)
/* fixup multi-node processor information */
if (nodes_per_socket > 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_per_socket;
- cus_per_node = cores_per_node / cores_per_cu;
+ cus_per_node = c->x86_max_cores / nodes_per_socket;
/* store NodeID, use llc_shared_map to store sibling info */
per_cpu(cpu_llc_id, cpu) = node_id;
/* 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;
+ c->cpu_core_id %= cus_per_node;
}
}
#endif
diff --git a/arch/x86/kernel/cpu/powerflags.c b/arch/x86/kernel/cpu/powerflags.c
index 31f0f335ed22..1dd8294fd730 100644
--- a/arch/x86/kernel/cpu/powerflags.c
+++ b/arch/x86/kernel/cpu/powerflags.c
@@ -18,4 +18,6 @@ const char *const x86_power_flags[32] = {
"", /* tsc invariant mapped to constant_tsc */
"cpb", /* core performance boost */
"eff_freq_ro", /* Readonly aperf/mperf */
+ "proc_feedback", /* processor feedback interface */
+ "acc_power", /* accumulated power mechanism */
};