tree ed0008190d1ecec2102d9f506a879f2e119a930b
parent f1aff7aa8e6f238909bd0b0e7a1fe235802843f2
author Paolo Bonzini <pbonzini@redhat.com> 1528892588 +0200
committer Paolo Bonzini <pbonzini@redhat.com> 1530205532 +0200

QemuMutex: support --enable-debug-mutex

We have had some tracing tools for mutex but it's not easy to use them
for e.g. dead locks.  Let's provide "--enable-debug-mutex" parameter
when configure to allow QemuMutex to store the last owner that took
specific lock.  It will be easy to use this tool to debug deadlocks
since we can directly know who took the lock then as long as we can have
a debugger attached to the process.

Reviewed-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180425025459.5258-4-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>