• Raul Silvera's avatar
    perf inject: Add a command line option to specify build ids. · 8012243e
    Raul Silvera authored
    This commit adds the option --known-build-ids to perf inject.
    It allows the user to explicitly specify the build id for a given
    path, instead of retrieving it from the current system. This is
    useful in cases where a perf.data file is processed on a different
    system from where it was collected, or if some of the binaries are
    no longer available.
    
    The build ids and paths are specified in pairs in the command line.
    Using the file:// specifier, build ids can be loaded from a file
    directly generated by perf buildid-list. This is convenient to copy
    build ids from one perf.data file to another.
    
    ** Example: In this example we use perf record to create two
    perf.data files, one with build ids and another without, and use
    perf buildid-list and perf inject to copy the build ids from the
    first file to the second.
    
     $ perf record ls /tmp
     $ perf record --no-buildid -o perf.data.no-buildid ls /tmp
     $ perf buildid-list > build-ids.txt
     $ perf inject -b --known-build-ids='file://build-ids.txt' \
            -i perf.data.no-buildid -o perf.data.buildid
    Signed-off-by: default avatarRaul Silvera <rsilvera@google.com>
    Acked-by: default avatarNamhyung Kim <namhyung@kernel.org>
    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: James Clark <james.clark@arm.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Mark Rutland <mark.rutland@arm.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Link: https://lore.kernel.org/r/20220815225922.2118745-1-rsilvera@google.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    8012243e
perf-inject.txt 3.71 KB