perf intel-pt: Support decoding of guest kernel

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The guest kernel can be found from any guest thread belonging to the guest
machine. The guest machine is associated with the current host process pid.
An idle thread (pid=tid=0) is created as a vehicle from which to find the
guest kernel map.

Decoding guest user space is not supported.

Synthesized samples just need the cpumode set for the guest.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: https://lore.kernel.org/r/20210218095801.19576-8-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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Adrian Hunter 2021-02-18 11:57:57 +02:00 • committed by Arnaldo Carvalho de Melo

parent 3035cb6cbd

commit 6e86bfdc4a

1 changed files with 69 additions and 12 deletions

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tools/perf/util/intel-pt.c

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