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2014-08-12trace: [tcg] Generate TCG tracing routinesLluís Vilanova1-0/+9
Generate header "trace/generated-tcg-tracers.h" with the necessary routines for tracing events in guest code: * trace_${event}_tcg Convenience wrapper that calls the translation-time tracer 'trace_${event}_trans', and calls 'gen_helper_trace_${event}_exec to generate the TCG code to later trace the event at execution time. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-08-12trace: [tcg] Define TCG tracing helper routine wrappersLluís Vilanova1-0/+8
Generates header "trace/generated-helpers-wrappers.h" with definitions for TCG helper wrappers. These wrappers ('gen_helper_trace_${event}_exec_wrapper') transform mixed native and TCG argument types to TCG types and call the actual TCG helpers ('gen_helper_trace_${event}_exec_proxy'). Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-08-12trace: [tcg] Define TCG tracing helper routinesLluís Vilanova1-0/+12
Generates file "trace/generated-helpers.c" with TCG helper definitions to trace events in guest code at execution time. The helpers ('helper_trace_${event}_exec_proxy') cast the TCG-compatible native argument types to their original types (as defined in "trace-events") and call the tracing routine ('trace_${event}_exec'). Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-08-12trace: [tcg] Declare TCG tracing helper routinesLluís Vilanova1-5/+19
Generates file "trace/generated-helpers.h" with TCG helper declarations to trace events in guest code at execution time ('trace_${event}_exec_proxy'). Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-09trace: Multi-backend tracingLluís Vilanova1-17/+15
Adds support to compile QEMU with multiple tracing backends at the same time. For example, you can compile QEMU with: $ ./configure --enable-trace-backends=ftrace,dtrace Where 'ftrace' can be handy for having an in-flight record of events, and 'dtrace' can be later used to extract more information from the system. This patch allows having both available without recompiling QEMU. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-07trace: [tracetool] Minimize the amount of per-backend codeLluís Vilanova1-2/+2
Backends now only contain the essential backend-specific code, and most of the work is moved to frontend code. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-02-19Adapt Makefiles to the new LTTng ust interfaceMohamad Gebai1-0/+25
Add generation of new files for LTTng ust. Signed-off-by: Mohamad Gebai <mohamad.gebai@polymtl.ca> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-05-03trace: Add ftrace tracing backendEiichi Tsukata1-0/+1
This patch adds a ftrace tracing backend which sends trace event to ftrace marker file. You can effectively compare qemu trace data and kernel(especially, kvm.ko when using KVM) trace data. The ftrace backend is restricted to Linux only. To try out the ftrace backend: $ ./configure --trace-backend=ftrace $ make if you use KVM, enable kvm events in ftrace: # sudo echo 1 > /sys/kernel/debug/tracing/events/kvm/enable After running qemu by root user, you can get the trace: # cat /sys/kernel/debug/tracing/trace Signed-off-by: Eiichi Tsukata <eiichi.tsukata.xh@hitachi.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28trace: rebuild generated-events.o when configuration changesStefan Hajnoczi1-1/+1
Make sure to rebuild generated-events.o when ./configure options change. This prevents linker errors when a stale generated-events.o gets linked with code compiled against fresh headers. For example, try building with ./configure --enable-trace-backend=stderr followed by ./configure --enable-trace-backend=dtrace. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28trace: Provide a generic tracing event descriptorLluís Vilanova1-1/+23
Uses tracetool to generate a backend-independent tracing event description (struct TraceEvent). The values for such structure are generated with the non-public "events" backend ("events-c" frontend). The generation of the defines to check if an event is statically enabled is also moved to the "events" backend ("events-h" frontend). Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-30Makefile: clean timestamp generation ruleMichael S. Tsirkin1-2/+2
create timestamp by rule without sideeffects. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2013-01-12build: fold trace-obj-y into libqemuutil.aPaolo Bonzini1-5/+5
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-01-12build: some simplifications for "trace/Makefile.objs"Paolo Bonzini1-13/+13
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-01-12build: move dtrace rules to rules.makPaolo Bonzini1-12/+0
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-23build: Use separate makefile for "trace/"Lluís Vilanova1-0/+70
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> -- Changes in v2: * Do not depend on "qemu-timer-common.o". * Use "$(obj)" in rules to refer to the build sub-directory. * Remove dependencies against "$(GENERATED_HEADERS)". Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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