This tracing pull request is long overdue for QEMU 1.5. Eiichi Tsukata's ftrace backend makes it easy to correlate QEMU events with host kernel events. He also reports good performance.
Kazuya Saito's trace events make it easier to observe the KVM run loop. The following changes since commit 8ca27ce2e1150486ea2db4116a03706b28294f16: Merge remote-tracking branch 'afaerber/qom-cpu' into staging (2013-05-02 10:57:01 -0500) are available in the git repository at: git://github.com/stefanha/qemu.git tracing for you to fetch changes up to e64dd5efb2c6d522a3bc9d096cd49a4e53f0ae10: trace: document ftrace backend (2013-05-03 13:58:09 +0200) ---------------------------------------------------------------- Eiichi Tsukata (2): trace: Add ftrace tracing backend trace: document ftrace backend Kazuya Saito (2): kvm-all: add kvm_ioctl, kvm_vm_ioctl, kvm_vcpu_ioctl tracepoints kvm-all: add kvm_run_exit tracepoint configure | 8 +++ docs/tracing.txt | 16 ++++++ kvm-all.c | 5 ++ scripts/tracetool/backend/ftrace.py | 54 +++++++++++++++++++ trace-events | 7 +++ trace/Makefile.objs | 1 + trace/ftrace.c | 102 ++++++++++++++++++++++++++++++++++++ trace/ftrace.h | 10 ++++ 8 files changed, 203 insertions(+) create mode 100644 scripts/tracetool/backend/ftrace.py create mode 100644 trace/ftrace.c create mode 100644 trace/ftrace.h -- 1.8.1.4