Changes since v1:
* Always assume host kernel when the trace was captured at EL1 (nVHE) * Fix EL validation to work with ETMv3 * Add a commit to make PID format accessible from struct cs_etm_auxtrace
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Some fixes to support an issue reported by Denis Nikitin where decoding trace that contains different EL1 and EL2 kernels can crash or go into an infinite loop because the wrong kernel maps are used for the decode.
This still doesn't support distinguishing guest and host userspace, we'd still have to fix the timestamps and do a bit more work to correlate that. And I've removed PERF_RECORD_MISC_HYPERVISOR as a possible outcome of cs_etm__cpu_mode(). As far as I know this could never have been returned anyway because machine__is_host(machine) was always true due to session.machines.host being hard coded. And I'm not sure of the relevance of the difference between PERF_RECORD_MISC_KERNEL and PERF_RECORD_MISC_HYPERVISOR in this scenario.
The first commit is a tidy up, second fixes a bug that I found when comparing the exception level and thread of branch records, the third is the main fix, and the last commit is some extra error checking.
Applies to acme/perf-tools (48b1320a67)
James Clark (5): perf cs-etm: Only track threads instead of PID and TIDs perf cs-etm: Use previous thread for branch sample source IP perf cs-etm: Make PID format accessible from struct cs_etm_auxtrace perf cs-etm: Track exception level perf cs-etm: Add exception level consistency check
.../perf/util/cs-etm-decoder/cs-etm-decoder.c | 33 +-- .../perf/util/cs-etm-decoder/cs-etm-decoder.h | 4 +- tools/perf/util/cs-etm.c | 273 ++++++++++-------- tools/perf/util/cs-etm.h | 13 +- 4 files changed, 175 insertions(+), 148 deletions(-)