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CPUCache (Linux): detect cache line size

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This commit is contained in:
Carter Li
2024-06-05 15:55:06 +08:00
committed by 李通洲
parent e8ddd33614
commit f2ff20d69c
1 changed files with 8 additions and 2 deletions
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src/detection/cpucache/cpucache_linux.c
+8 -2
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@@ -36,6 +36,12 @@ static const char* parseCpuCacheIndex(FFstrbuf* path, FFCPUCacheResult* result,
default: return "unknown cache type";
}
uint32_t lineSize = 0;
ffStrbufSubstrBefore(path, baseLen);
ffStrbufAppendS(path, "/coherency_line_size");
if (ffReadFileBuffer(path->chars, buffer))
lineSize = (uint32_t) ffStrbufToUInt(buffer, 0);
ffStrbufSubstrBefore(path, baseLen);
ffStrbufAppendS(path, "/shared_cpu_list");
if (!ffReadFileBuffer(path->chars, buffer))
@@ -43,10 +49,10 @@ static const char* parseCpuCacheIndex(FFstrbuf* path, FFCPUCacheResult* result,
ffStrbufTrimRightSpace(buffer);
// deduplicate shared caches
ffStrbufAppendF(buffer, "_%u_%u_%u\n", level, sizeKb, cacheType);
ffStrbufAppendF(buffer, "_%u_%u_%u_%u\n", level, sizeKb, lineSize, cacheType);
if (ffStrbufContain(added, buffer)) return "cache already added";
ffStrbufAppend(added, buffer);
ffCPUCacheAddItem(result, level, sizeKb * 1024, cacheType);
ffCPUCacheAddItem(result, level, sizeKb * 1024, lineSize, cacheType);
return NULL;
}