[PATCH 0/2] coresight: etm4x: Expose default timestamp source in sysfs

German Gomez
2022-04-29T12:32:29Z

Hi,

I'm Sending this sysfs addition to the etm4x driver in order to expose
the timestamp source of the trace (given by the TRFCR_ELx.TS register).

As mentioned in [1/2], having this information is useful for assigning
Kernel times to the perf samples.

Thanks,
German

German Gomez (3):
coresight: etm4x: Expose default timestamp source in sysfs
coresight: etm4x: docs: Add documentation for 'ts_source' sysfs
interface
perf cs_etm: Store ts_source in AUXTRACE_INFO fields

.../testing/sysfs-bus-coresight-devices-etm4x | 8 +++
.../coresight/coresight-etm4x-reference.rst | 14 ++++
arch/arm64/include/asm/sysreg.h | 1 +
.../coresight/coresight-etm4x-sysfs.c | 34 ++++++++++
tools/perf/arch/arm/util/cs-etm.c | 64 +++++++++++++++++--
tools/perf/util/cs-etm.c | 61 +++++++++---------
tools/perf/util/cs-etm.h | 13 +++-
7 files changed, 159 insertions(+), 36 deletions(-)