These set of patches add few improvements to iotrace. * Region limiting - allows setting an address and size where only io operations that falls into that address are logged. * Timestamping - Timestamp every iotrace record with current timestamp * dumping - iotrace dump command for dumping all records from buffer in a readable fashion.
In terms of backwards compatibility, the timestamp is not backward compatible as it changes the iotrace record. so if one developed an offline parsing tool it will be broken. I though of adding #ifdef specific for that, but eventually I didn't.
Ramon Fried (5): cmd: iotrace: add set region command iotrace: add IO region limit common: iotrace: add timestamp to iotrace records iotrace: move record definitons to header file cmd: iotrace: add dump trace command
cmd/iotrace.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++- common/iotrace.c | 53 +++++++++++++++++++++++-------------------- include/iotrace.h | 52 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 137 insertions(+), 26 deletions(-)