Signed-off-by: Stefan Hajnoczi <stefa...@linux.vnet.ibm.com> --- docs/tracing.txt | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/docs/tracing.txt b/docs/tracing.txt index 963c504..d2499d9 100644 --- a/docs/tracing.txt +++ b/docs/tracing.txt @@ -133,6 +133,11 @@ source tree. It may not be as powerful as platform-specific or third-party trace backends but it is portable. This is the recommended trace backend unless you have specific needs for more advanced backends. +This trace backend is not thread-safe. In many cases this is not an issue +since the QEMU global mutex covers much of the codebase. Consider this +limitation when tracing utility functions that may be called from worker +threads with no synchronization. + ==== Monitor commands ==== * info trace -- 1.7.2.3
