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authorAdrian Hunter <adrian.hunter@intel.com>2020-07-10 18:11:03 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2020-08-06 09:02:14 -0300
commit7c1b16ba0e26e6802d80c99c92529f29bcdcea25 (patch)
tree788eca05bf50ec627258a751dcaaa27b3388a2e7 /tools/virtio/vringh_test.c
parent51971536ef53478ec92cd9e8249048743169df22 (diff)
perf intel-pt: Add support for decoding FUP/TIP only
Use the new itrace 'q' option to add support for a mode of decoding that ignores TNT, does not walk object code, but gets the ip from FUP and TIP packets. Example: $ perf record -e intel_pt//u grep -rI pudding drivers [ perf record: Woken up 52 times to write data ] [ perf record: Captured and wrote 57.870 MB perf.data ] $ time perf script --itrace=bi | wc -l 58948289 real 1m23.863s user 1m23.251s sys 0m7.452s $ time perf script --itrace=biq | wc -l 3385694 real 0m4.453s user 0m4.455s sys 0m0.328s Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200710151104.15137-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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