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authorEiichi Tsukata <eiichi.tsukata.xh@hitachi.com>2013-04-11 20:25:15 +0900
committerStefan Hajnoczi <stefanha@redhat.com>2013-05-03 13:58:09 +0200
commit781e9545dbe54d2f0a530edbf48fd0ac1e77244c (patch)
tree9f89f26c7f52ff8cfca0997e8d7849dd242dc79b /monitor.c
parentb76ac80a5ca9f2e19405419172c0dcaf0370d4f5 (diff)
trace: Add ftrace tracing backend
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>
Diffstat (limited to 'monitor.c')
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