Hi, This patch series adds support to track more request based flags and different request fields to the blktrace infrastructure, for RFC we only update blktrace and blkparse tools. As we make progress I'll also update the rest of the tools. With reference to the kernel side patch-series, in this series, we increase the action, action mask field and add priority and priority mask field to existing infrastructure. We add new structures to hold the trace where we increase the size of the action field and add a new member to track the priority of the I/O. For the trace management side, we add new IOCTLs so that user can configure trace extensions from the blktrace user-space tools. For this RFC I kept the patches simple and per tool basis where the first 3 patches update the user API which is mostly common code and reflection of the kernel side changes and later two patches are for blktrace and blkparse tool. Please have a look at Kernel Side RFC reference :- https://marc.info/?l=linux-btrace&m=155949445123407&w=2 The RFC is still light on the details but with new IOCTLs I was able to get the code running with user-space tools. There is still some more scope to optimize the code and reducing the duplicate code, but I kept it simple for now so that it is easy to review. Chaitanya Kulkarni (5): blktrace_api.h: add trace extension definitions blktrace.h: update tools header for trace extension act_mask: add support for trace extension blktrace: add support for trace extension blkparse: add support for trace extension Makefile | 2 +- act_mask.c | 75 ++++ blkparse.c | 1072 +++++++++++++++++++++++++++++++++++------------- blkparse.h | 78 ++++ blkparse_fmt.c | 204 ++++++--- blktrace.c | 342 +++++++++++++-- blktrace.h | 78 +++- blktrace_api.h | 107 ++++- 8 files changed, 1567 insertions(+), 391 deletions(-) create mode 100644 blkparse.h -- 2.19.1
