Initial commit

Change-Id: I4bf1707bd3dfeadf2c17b0a7daff372b1925ebbd

runtime/os_interface/linux/performance_counters_linux.cpp

@@ -0,0 +1,87 @@
+/*
+* Copyright (c) 2017, Intel Corporation
+*
+* Permission is hereby granted, free of charge, to any person obtaining a
+* copy of this software and associated documentation files (the "Software"),
+* to deal in the Software without restriction, including without limitation
+* the rights to use, copy, modify, merge, publish, distribute, sublicense,
+* and/or sell copies of the Software, and to permit persons to whom the
+* Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+* OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#include "performance_counters_linux.h"
+
+namespace OCLRT {
+
+std::unique_ptr<PerformanceCounters> PerformanceCounters::create(OSTime *osTime) {
+    return std::unique_ptr<PerformanceCounters>(new PerformanceCountersLinux(osTime));
+}
+PerformanceCountersLinux::PerformanceCountersLinux(OSTime *osTime) : PerformanceCounters(osTime) {
+    mdLibHandle = nullptr;
+    perfmonLoadConfigFunc = nullptr;
+}
+
+PerformanceCountersLinux::~PerformanceCountersLinux() {
+    if (pAutoSamplingInterface) {
+        autoSamplingStopFunc(&pAutoSamplingInterface);
+        pAutoSamplingInterface = nullptr;
+        available = false;
+    }
+
+    if (mdLibHandle) {
+        dlcloseFunc(mdLibHandle);
+        mdLibHandle = nullptr;
+    }
+}
+
+void PerformanceCountersLinux::initialize(const HardwareInfo *hwInfo) {
+    PerformanceCounters::initialize(hwInfo);
+    mdLibHandle = dlopenFunc("libmd.so", RTLD_LAZY | RTLD_LOCAL);
+    if (mdLibHandle) {
+        perfmonLoadConfigFunc = reinterpret_cast<perfmonLoadConfig_t>(dlsymFunc(mdLibHandle, "drm_intel_perfmon_load_config"));
+    }
+    setPlatformInfoFunc(hwInfo->pPlatform->eProductFamily, (void *)(hwInfo->pSkuTable));
+}
+
+void PerformanceCountersLinux::enableImpl() {
+    if (mdLibHandle && perfmonLoadConfigFunc) {
+        PerformanceCounters::enableImpl();
+    }
+}
+
+bool PerformanceCountersLinux::verifyPmRegsCfg(InstrPmRegsCfg *pCfg, uint32_t *pLastPmRegsCfgHandle, bool *pLastPmRegsCfgPending) {
+    if (perfmonLoadConfigFunc == nullptr) {
+        return false;
+    }
+    if (PerformanceCounters::verifyPmRegsCfg(pCfg, pLastPmRegsCfgHandle, pLastPmRegsCfgPending)) {
+        return getPerfmonConfig(pCfg);
+    }
+    return false;
+}
+bool PerformanceCountersLinux::getPerfmonConfig(InstrPmRegsCfg *pCfg) {
+    unsigned int oaCfgHandle = pCfg->oaCounters.handle;
+    unsigned int gpCfgHandle = pCfg->gpCounters.handle;
+    int fd = osInterface->get()->getDrm()->getFileDescriptor();
+    if (perfmonLoadConfigFunc(fd, nullptr, &oaCfgHandle, &gpCfgHandle) != 0) {
+        return false;
+    }
+    if (pCfg->oaCounters.handle != 0 && oaCfgHandle != pCfg->oaCounters.handle) {
+        return false;
+    }
+    if (pCfg->gpCounters.handle != 0 && gpCfgHandle != pCfg->gpCounters.handle) {
+        return false;
+    }
+    return true;
+}
+} // namespace OCLRT