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authorDaniel P. Berrange <berrange@redhat.com>2016-10-04 14:35:49 +0100
committerStefan Hajnoczi <stefanha@redhat.com>2016-10-12 09:35:54 +0200
commitef4c9fc8542e06b1d567172c04b0c0377c7ab0c5 (patch)
treeb10d94d545215e19252f78ed332d948fd56ad58e /trace/event-internal.h
parent79218be42b835cbc7bd1b0fbd07d115add6e7605 (diff)
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trace: remove the TraceEventID and TraceEventVCPUID enums
The TraceEventID and TraceEventVCPUID enums constants are no longer actually used for anything critical. The TRACE_EVENT_COUNT limit is used to determine the size of the TraceEvents array, and can be removed if we just NULL terminate the array instead. The TRACE_VCPU_EVENT_COUNT limit is used as a magic value for marking non-vCPU events, and also for declaring the size of the trace dstate mask in the CPUState struct. The former usage can be replaced by a dedicated constant TRACE_EVENT_VCPU_NONE, defined as (uint32_t)-1. For the latter usage, we can simply define a constant for the number of VCPUs, avoiding the need for the full enum. The only other usages of the enum values can be replaced by accesing the id/vcpu_id fields via the named TraceEvent structs. Reviewed-by: LluĂ­s Vilanova <vilanova@ac.upc.edu> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 1475588159-30598-11-git-send-email-berrange@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'trace/event-internal.h')
-rw-r--r--trace/event-internal.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/trace/event-internal.h b/trace/event-internal.h
index 58f0551..f63500b 100644
--- a/trace/event-internal.h
+++ b/trace/event-internal.h
@@ -10,6 +10,12 @@
#ifndef TRACE__EVENT_INTERNAL_H
#define TRACE__EVENT_INTERNAL_H
+/*
+ * Special value for TraceEvent.vcpu_id field to indicate
+ * that the event is not VCPU specific
+ */
+#define TRACE_VCPU_EVENT_NONE ((uint32_t)-1)
+
/**
* TraceEvent:
* @id: Unique event identifier.