Changeset 84458 in vbox for trunk/src/VBox/VMM/VMMR0

Timestamp:

May 22, 2020 12:51:49 PM (5 years ago)

Author:

vboxsync

Message:

VMM/DBGF: First commit of new tracing facility, bugref:9210

The new DBGF tracing facility allows efficient capturing of events to a compact binary
trace log for later analysis. It is primarily intended for recording device/guest
interactions for now but can be extended easily for other types of events later on.
It supports capturing events happening in both R0 and R3 by using a shared ring buffer
to post events to. The events are processed by a dedicated I/O thread which writes
new events into the binary trace log file.

This is only the core VMM/DBGF part providing the API, the integration with PDM
comes in a separate commit.

Disabled by default for now because it is still work in progress,
enable with VBOX_WITH_DBGF_TRACING.

Location:

trunk/src/VBox/VMM/VMMR0

Files:

• DBGFR0Tracer.cpp (added)
• VMMR0.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMR0/VMMR0.cpp

@@ -2226 +2226 @@
         }
 
+#ifdef VBOX_WITH_DBGF_TRACING
+        case VMMR0_DO_DBGF_TRACER_CREATE:
+        {
+            if (!pReqHdr || u64Arg || idCpu != 0)
+                return VERR_INVALID_PARAMETER;
+            rc = DBGFR0TracerCreateReqHandler(pGVM, (PDBGFTRACERCREATEREQ)pReqHdr);
+            VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
+            break;
+        }
+
+        case VMMR0_DO_DBGF_TRACER_CALL_REQ_HANDLER:
+        {
+            if (!pReqHdr || u64Arg)
+                return VERR_INVALID_PARAMETER;
+#if 0 /** @todo */
+            rc = DBGFR0TracerGenCallReqHandler(pGVM, (PDBGFTRACERGENCALLREQ)pReqHdr, idCpu);
+#else
+            rc = VERR_NOT_IMPLEMENTED;
+#endif
+            VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
+            break;
+        }
+#endif
+
         /*
          * For profiling.