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The auxtrace_info section contains metadata that describes the number of trace capable CPUs, their ETM version and trace configuration, including trace id values. This information is required by the trace decoder in order to properly decode the compressed trace packets. This patch adds code to read and parse this metadata, and store it for use in configuring instances of the cs-etm trace decoder. Co-authored-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Tor Jeremiassen <tor@ti.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Kim Phillips <kim.phillips@arm.com> Cc: Mike Leach <mike.leach@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1516211539-5166-4-git-send-email-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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