perf inject: Lazy build-id mmap2 event insertion

Add -B option that lazily inserts mmap2 events thereby dropping all
mmap events without samples. This is similar to the behavior of -b
where only build_id events are inserted when a dso is accessed in a
sample.

File size savings can be significant in system-wide mode, consider:

  $ perf record -g -a -o perf.data sleep 1
  $ perf inject -B -i perf.data -o perf.new.data
  $ ls -al perf.data perf.new.data
           5147049 perf.data
           2248493 perf.new.data

Give test coverage of the new option in pipe test.

Signed-off-by: Ian Rogers <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Anne Macedo <[email protected]>
Cc: Casey Chen <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Sun Haiyong <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

0 files changed, 0 insertions, 0 deletions