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perf: cs-etm: Support version 0.1 of HW_ID packets

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v0.1 HW_ID packets have a new field that describes which sink each CPU
writes to. Use the sink ID to link trace ID maps to each other so that
mappings are shared wherever the sink is shared.

Also update the error message to show that overlapping IDs aren't an
error in per-thread mode, just not supported. In the future we can
use the CPU ID from the AUX records, or watch for changing sink IDs on
HW_ID packets to use the correct decoders.

Reviewed-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: James Clark <james.clark@arm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Ganapatrao Kulkarni <gankulkarni@os.amperecomputing.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20240722101202.26915-7-james.clark@linaro.org
Signed-off-by: James Clark <james.clark@linaro.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
James Clark
2024-07-22 11:11:48 +01:00
committed by Arnaldo Carvalho de Melo
parent 940007cee5
commit 1506af6db8
2 changed files with 103 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tools/include/linux/coresight-pmu.h
+13 -4
View File
@@ -49,12 +49,21 @@
* Interpretation of the PERF_RECORD_AUX_OUTPUT_HW_ID payload.
* Used to associate a CPU with the CoreSight Trace ID.
* [07:00] - Trace ID - uses 8 bits to make value easy to read in file.
* [59:08] - Unused (SBZ)
* [63:60] - Version
* [39:08] - Sink ID - as reported in /sys/bus/event_source/devices/cs_etm/sinks/
* Added in minor version 1.
* [55:40] - Unused (SBZ)
* [59:56] - Minor Version - previously existing fields are compatible with
* all minor versions.
* [63:60] - Major Version - previously existing fields mean different things
* in new major versions.
*/
#define CS_AUX_HW_ID_TRACE_ID_MASK GENMASK_ULL(7, 0)
#define CS_AUX_HW_ID_VERSION_MASK GENMASK_ULL(63, 60)
#define CS_AUX_HW_ID_SINK_ID_MASK GENMASK_ULL(39, 8)
#define CS_AUX_HW_ID_CURR_VERSION 0
#define CS_AUX_HW_ID_MINOR_VERSION_MASK GENMASK_ULL(59, 56)
#define CS_AUX_HW_ID_MAJOR_VERSION_MASK GENMASK_ULL(63, 60)
#define CS_AUX_HW_ID_MAJOR_VERSION 0
#define CS_AUX_HW_ID_MINOR_VERSION 1
#endif