https://github.com/torvalds/linux
Revision c210c3069636d830bc81f438711f0ad4a1602805 authored by Leo Yan on 19 May 2021, 07:19:35 UTC, committed by Arnaldo Carvalho de Melo on 01 July 2021, 19:14:36 UTC
During the recording phase, "perf record" tool synthesizes event PERF_RECORD_TIME_CONV for the hardware clock parameters and saves the event into the data file. Afterwards, when processing the data file, the event TIME_CONV will be processed at the very early time and is stored into session context. This patch extracts these parameters from the session context and saves into the structure "spe->tc" with the type perf_tsc_conversion, so that the parameters are ready for conversion between clock counter and time stamp. Signed-off-by: Leo Yan <leo.yan@linaro.org> Reviewed-by: James Clark <james.clark@arm.com> Tested-by: James Clark <james.clark@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Al Grant <Al.Grant@arm.com> Cc: Dave Martin <Dave.Martin@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20210519071939.1598923-2-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
1 parent 2f01c20
Tip revision: c210c3069636d830bc81f438711f0ad4a1602805 authored by Leo Yan on 19 May 2021, 07:19:35 UTC
perf arm-spe: Save clock parameters from TIME_CONV event
perf arm-spe: Save clock parameters from TIME_CONV event
Tip revision: c210c30
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.cocciconfig | -rw-r--r-- | 59 bytes |
.get_maintainer.ignore | -rw-r--r-- | 71 bytes |
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COPYING | -rw-r--r-- | 496 bytes |
CREDITS | -rw-r--r-- | 98.6 KB |
Kbuild | -rw-r--r-- | 1.3 KB |
Kconfig | -rw-r--r-- | 555 bytes |
MAINTAINERS | -rw-r--r-- | 589.6 KB |
Makefile | -rw-r--r-- | 64.4 KB |
README | -rw-r--r-- | 727 bytes |
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