CPU: adds NUMA node detection

Author: CarterLi

src/detection/cpu/cpu.h

@@ -21,6 +21,7 @@ typedef struct FFCPUResult
     uint16_t coresPhysical;
     uint16_t coresLogical;
     uint16_t coresOnline;
+    uint16_t numaNodes;
 
     uint32_t frequencyBase; // GHz
     uint32_t frequencyMax; // GHz

src/detection/cpu/cpu_bsd.c

@@ -100,5 +100,7 @@ const char* ffDetectCPUImpl(const FFCPUOptions* options, FFCPUResult* cpu)
             detectThermalTemp(&cpu->temperature);
     }
 
+    cpu->numaNodes = (uint16_t) ffSysctlGetInt("vm.ndomains", 0);
+
     return NULL;
 }

src/detection/cpu/cpu_linux.c

@@ -138,6 +138,21 @@ static double detectCPUTemp(void)
     return FF_CPU_TEMP_UNSET;
 }
 
+static void detectNumaNodes(FFCPUResult* cpu)
+{
+    FF_AUTO_CLOSE_DIR DIR* dir = opendir("/sys/devices/system/node/");
+    if (!dir) return;
+
+    struct dirent* entry;
+    while ((entry = readdir(dir)) != NULL)
+    {
+        if (entry->d_type != DT_DIR && entry->d_type != DT_UNKNOWN)
+            continue;
+        if (ffStrStartsWith(entry->d_name, "node") && ffCharIsDigit(entry->d_name[strlen("node")]))
+            cpu->numaNodes++;
+    }
+}
+
 #ifdef __ANDROID__
 #include "common/settings.h"
 
@@ -568,6 +583,8 @@ FF_MAYBE_UNUSED static const char* detectCPUX86(const FFCPUOptions* options, FFC
     if (!detectFrequency(cpu, options) || cpu->frequencyBase == 0)
         cpu->frequencyBase = (uint32_t) ffStrbufToUInt(&cpuMHz, 0);
 
+    detectNumaNodes(cpu);
+
     return NULL;
 }
 
@@ -877,6 +894,7 @@ FF_MAYBE_UNUSED static const char* detectCPUOthers(const FFCPUOptions* options,
         detectPhysicalCores(cpu);
 
     ffCPUDetectByCpuid(cpu);
+    detectNumaNodes(cpu);
 
     return NULL;
 }

src/detection/cpu/cpu_windows.c

@@ -230,6 +230,8 @@ static const char* detectNCores(FFCPUResult* cpu)
             ++cpu->coresPhysical;
         else if (ptr->Relationship == RelationProcessorPackage)
             ++cpu->packages;
+        else if (ptr->Relationship == RelationNumaNode)
+            ++cpu->numaNodes;
     }
 
     return NULL;

src/modules/cpu/cpu.c

@@ -217,6 +217,11 @@ bool ffGenerateCPUJsonResult(FFCPUOptions* options, yyjson_mut_doc* doc, yyjson_
         else
             yyjson_mut_obj_add_null(doc, obj, "march");
 
+        if (cpu.numaNodes > 0)
+            yyjson_mut_obj_add_uint(doc, obj, "numaNodes", cpu.numaNodes);
+        else
+            yyjson_mut_obj_add_null(doc, obj, "numaNodes");
+
         success = true;
     }
 
@@ -259,6 +264,6 @@ FFModuleBaseInfo ffCPUModuleInfo = {
         {"Temperature (formatted)", "temperature"},
         {"Logical core count grouped by frequency", "core-types"},
         {"Processor package count", "packages"},
-        {"X86-64 CPU microarchitecture", "march"},
+        {"CPU microarchitecture", "march"},
     }))
 };