This is the second revision of a set that fix miscellaneous problems preventing snapshot mode from working properly when CoreSight events are used.
It applies cleanly on the coresight next branch[1] and will be posted again when 5.2-rc1 comes out.
Best regards, Mathieu
[1]. https://git.linaro.org/kernel/coresight.git/ branch next
Changes for V2: * Drop requirement to make the perf AUX buffer the same size as the sink buffers. * Re-worked the user space algorithm to find '*head' and '*old". * Fixed typo in changelogs (Leo).
Mathieu Poirier (6): coresight: etb10: Properly set AUX buffer head in snapshot mode coresight: tmc-etr: Properly set AUX buffer head in snapshot mode coresight: tmc-etf: Properly set AUX buffer head in snapshot mode coresight: tmc-etf: Fix snapshot mode update function coresight: perf: Don't set the truncated flag in snapshot mode perf tools: Properly set the value of 'old' and 'head' in snapshot mode
drivers/hwtracing/coresight/coresight-etb10.c | 21 ++- .../hwtracing/coresight/coresight-tmc-etf.c | 28 ++-- .../hwtracing/coresight/coresight-tmc-etr.c | 19 ++- tools/perf/arch/arm/util/cs-etm.c | 124 +++++++++++++++++- 4 files changed, 165 insertions(+), 27 deletions(-)