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.
v2:
* fixed printf format
* added a fix when the buffer is full
v3:
* changed the "buffer full" scenario as
recommended by Simon Glass.
This fix is dependand on a sperate patch that introduces
WARN_ONCE definition in bug.h
(https://patchwork.ozlabs.org/patch/921391/)
Ramon Fried (6):
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
iotrace: fix behaviour when buffer is full
cmd/iotrace.c | 63 ++++++++++++++++++++++++++++++++++++++++++---
common/iotrace.c | 65 +++++++++++++++++++++++++++--------------------
include/iotrace.h | 57 +++++++++++++++++++++++++++++++++++++++--
3 files changed, 153 insertions(+), 32 deletions(-)
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
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